summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 11:35:37 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-07-27 11:35:37 -0700
commit08fd8c17686c6b09fa410a26d516548dd80ff147 (patch)
tree0d8c17e70a94518a301e85fc7b23fbc09311068c
parente831101a73fbc8339ef1d1909dad3ef64f089e70 (diff)
parentd34c30cc1fa80f509500ff192ea6bc7d30671061 (diff)
downloadlinux-08fd8c17686c6b09fa410a26d516548dd80ff147.tar.bz2
Merge tag 'for-linus-4.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen updates from David Vrabel: "Features and fixes for 4.8-rc0: - ACPI support for guests on ARM platforms. - Generic steal time support for arm and x86. - Support cases where kernel cpu is not Xen VCPU number (e.g., if in-guest kexec is used). - Use the system workqueue instead of a custom workqueue in various places" * tag 'for-linus-4.8-rc0-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip: (47 commits) xen: add static initialization of steal_clock op to xen_time_ops xen/pvhvm: run xen_vcpu_setup() for the boot CPU xen/evtchn: use xen_vcpu_id mapping xen/events: fifo: use xen_vcpu_id mapping xen/events: use xen_vcpu_id mapping in events_base x86/xen: use xen_vcpu_id mapping when pointing vcpu_info to shared_info x86/xen: use xen_vcpu_id mapping for HYPERVISOR_vcpu_op xen: introduce xen_vcpu_id mapping x86/acpi: store ACPI ids from MADT for future usage x86/xen: update cpuid.h from Xen-4.7 xen/evtchn: add IOCTL_EVTCHN_RESTRICT xen-blkback: really don't leak mode property xen-blkback: constify instance of "struct attribute_group" xen-blkfront: prefer xenbus_scanf() over xenbus_gather() xen-blkback: prefer xenbus_scanf() over xenbus_gather() xen: support runqueue steal time on xen arm/xen: add support for vm_assist hypercall xen: update xen headers xen-pciback: drop superfluous variables xen-pciback: short-circuit read path used for merging write values ...
-rw-r--r--Documentation/devicetree/bindings/arm/xen.txt35
-rw-r--r--arch/arm/include/asm/xen/hypercall.h1
-rw-r--r--arch/arm/include/asm/xen/xen-ops.h6
-rw-r--r--arch/arm/kernel/setup.c2
-rw-r--r--arch/arm/xen/Makefile1
-rw-r--r--arch/arm/xen/efi.c40
-rw-r--r--arch/arm/xen/enlighten.c157
-rw-r--r--arch/arm/xen/hypercall.S1
-rw-r--r--arch/arm64/include/asm/xen/xen-ops.h6
-rw-r--r--arch/arm64/kernel/setup.c3
-rw-r--r--arch/arm64/xen/Makefile1
-rw-r--r--arch/arm64/xen/hypercall.S1
-rw-r--r--arch/x86/include/asm/cpu.h1
-rw-r--r--arch/x86/include/asm/smp.h2
-rw-r--r--arch/x86/include/asm/xen/cpuid.h5
-rw-r--r--arch/x86/kernel/acpi/boot.c16
-rw-r--r--arch/x86/kernel/apic/apic.c2
-rw-r--r--arch/x86/kernel/setup_percpu.c3
-rw-r--r--arch/x86/xen/efi.c111
-rw-r--r--arch/x86/xen/enlighten.c49
-rw-r--r--arch/x86/xen/grant-table.c57
-rw-r--r--arch/x86/xen/irq.c3
-rw-r--r--arch/x86/xen/pmu.c2
-rw-r--r--arch/x86/xen/smp.c18
-rw-r--r--arch/x86/xen/time.c63
-rw-r--r--arch/x86/xen/xen-ops.h1
-rw-r--r--drivers/acpi/scan.c74
-rw-r--r--drivers/block/xen-blkback/xenbus.c20
-rw-r--r--drivers/block/xen-blkfront.c43
-rw-r--r--drivers/firmware/efi/arm-runtime.c5
-rw-r--r--drivers/firmware/efi/efi.c81
-rw-r--r--drivers/of/fdt.c13
-rw-r--r--drivers/xen/Kconfig2
-rw-r--r--drivers/xen/Makefile1
-rw-r--r--drivers/xen/arm-device.c196
-rw-r--r--drivers/xen/efi.c173
-rw-r--r--drivers/xen/events/events_base.c13
-rw-r--r--drivers/xen/events/events_fifo.c2
-rw-r--r--drivers/xen/evtchn.c43
-rw-r--r--drivers/xen/gntalloc.c2
-rw-r--r--drivers/xen/gntdev.c2
-rw-r--r--drivers/xen/privcmd.c2
-rw-r--r--drivers/xen/time.c50
-rw-r--r--drivers/xen/xen-pciback/conf_space.c22
-rw-r--r--drivers/xen/xen-pciback/conf_space_header.c57
-rw-r--r--drivers/xen/xen-pciback/pciback.h1
-rw-r--r--drivers/xen/xen-pciback/pciback_ops.c2
-rw-r--r--drivers/xen/xen-pciback/xenbus.c10
-rw-r--r--drivers/xen/xenbus/xenbus_probe_frontend.c15
-rw-r--r--drivers/xen/xlate_mmu.c77
-rw-r--r--include/linux/kernel_stat.h1
-rw-r--r--include/linux/of_fdt.h2
-rw-r--r--include/uapi/xen/evtchn.h15
-rw-r--r--include/xen/interface/hvm/params.h40
-rw-r--r--include/xen/interface/memory.h1
-rw-r--r--include/xen/interface/vcpu.h24
-rw-r--r--include/xen/interface/xen.h17
-rw-r--r--include/xen/xen-ops.h40
-rw-r--r--kernel/sched/cputime.c10
59 files changed, 1150 insertions, 493 deletions
diff --git a/Documentation/devicetree/bindings/arm/xen.txt b/Documentation/devicetree/bindings/arm/xen.txt
index 0f7b9c2109f8..c9b9321434ea 100644
--- a/Documentation/devicetree/bindings/arm/xen.txt
+++ b/Documentation/devicetree/bindings/arm/xen.txt
@@ -11,10 +11,32 @@ the following properties:
memory where the grant table should be mapped to, using an
HYPERVISOR_memory_op hypercall. The memory region is large enough to map
the whole grant table (it is larger or equal to gnttab_max_grant_frames()).
+ This property is unnecessary when booting Dom0 using ACPI.
- interrupts: the interrupt used by Xen to inject event notifications.
A GIC node is also required.
+ This property is unnecessary when booting Dom0 using ACPI.
+To support UEFI on Xen ARM virtual platforms, Xen populates the FDT "uefi" node
+under /hypervisor with following parameters:
+
+________________________________________________________________________________
+Name | Size | Description
+================================================================================
+xen,uefi-system-table | 64-bit | Guest physical address of the UEFI System
+ | | Table.
+--------------------------------------------------------------------------------
+xen,uefi-mmap-start | 64-bit | Guest physical address of the UEFI memory
+ | | map.
+--------------------------------------------------------------------------------
+xen,uefi-mmap-size | 32-bit | Size in bytes of the UEFI memory map
+ | | pointed to in previous entry.
+--------------------------------------------------------------------------------
+xen,uefi-mmap-desc-size | 32-bit | Size in bytes of each entry in the UEFI
+ | | memory map.
+--------------------------------------------------------------------------------
+xen,uefi-mmap-desc-ver | 32-bit | Version of the mmap descriptor format.
+--------------------------------------------------------------------------------
Example (assuming #address-cells = <2> and #size-cells = <2>):
@@ -22,4 +44,17 @@ hypervisor {
compatible = "xen,xen-4.3", "xen,xen";
reg = <0 0xb0000000 0 0x20000>;
interrupts = <1 15 0xf08>;
+ uefi {
+ xen,uefi-system-table = <0xXXXXXXXX>;
+ xen,uefi-mmap-start = <0xXXXXXXXX>;
+ xen,uefi-mmap-size = <0xXXXXXXXX>;
+ xen,uefi-mmap-desc-size = <0xXXXXXXXX>;
+ xen,uefi-mmap-desc-ver = <0xXXXXXXXX>;
+ };
};
+
+The format and meaning of the "xen,uefi-*" parameters are similar to those in
+Documentation/arm/uefi.txt, which are provided by the regular UEFI stub. However
+they differ because they are provided by the Xen hypervisor, together with a set
+of UEFI runtime services implemented via hypercalls, see
+http://xenbits.xen.org/docs/unstable/hypercall/x86_64/include,public,platform.h.html.
diff --git a/arch/arm/include/asm/xen/hypercall.h b/arch/arm/include/asm/xen/hypercall.h
index b6b962d70db9..9d874db13c0e 100644
--- a/arch/arm/include/asm/xen/hypercall.h
+++ b/arch/arm/include/asm/xen/hypercall.h
@@ -52,6 +52,7 @@ int HYPERVISOR_memory_op(unsigned int cmd, void *arg);
int HYPERVISOR_physdev_op(int cmd, void *arg);
int HYPERVISOR_vcpu_op(int cmd, int vcpuid, void *extra_args);
int HYPERVISOR_tmem_op(void *arg);
+int HYPERVISOR_vm_assist(unsigned int cmd, unsigned int type);
int HYPERVISOR_platform_op_raw(void *arg);
static inline int HYPERVISOR_platform_op(struct xen_platform_op *op)
{
diff --git a/arch/arm/include/asm/xen/xen-ops.h b/arch/arm/include/asm/xen/xen-ops.h
new file mode 100644
index 000000000000..ec154e719b11
--- /dev/null
+++ b/arch/arm/include/asm/xen/xen-ops.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_XEN_OPS_H
+#define _ASM_XEN_OPS_H
+
+void xen_efi_runtime_setup(void);
+
+#endif /* _ASM_XEN_OPS_H */
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index 7b5350060612..261dae6f3fec 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -1064,6 +1064,7 @@ void __init setup_arch(char **cmdline_p)
early_paging_init(mdesc);
#endif
setup_dma_zone(mdesc);
+ xen_early_init();
efi_init();
sanity_check_meminfo();
arm_memblock_init(mdesc);
@@ -1080,7 +1081,6 @@ void __init setup_arch(char **cmdline_p)
arm_dt_init_cpu_maps();
psci_dt_init();
- xen_early_init();
#ifdef CONFIG_SMP
if (is_smp()) {
if (!mdesc->smp_init || !mdesc->smp_init()) {
diff --git a/arch/arm/xen/Makefile b/arch/arm/xen/Makefile
index 12969523414c..227952103b0b 100644
--- a/arch/arm/xen/Makefile
+++ b/arch/arm/xen/Makefile
@@ -1 +1,2 @@
obj-y := enlighten.o hypercall.o grant-table.o p2m.o mm.o
+obj-$(CONFIG_XEN_EFI) += efi.o
diff --git a/arch/arm/xen/efi.c b/arch/arm/xen/efi.c
new file mode 100644
index 000000000000..16db419f9e90
--- /dev/null
+++ b/arch/arm/xen/efi.c
@@ -0,0 +1,40 @@
+/*
+ * Copyright (c) 2015, Linaro Limited, Shannon Zhao
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/efi.h>
+#include <xen/xen-ops.h>
+#include <asm/xen/xen-ops.h>
+
+/* Set XEN EFI runtime services function pointers. Other fields of struct efi,
+ * e.g. efi.systab, will be set like normal EFI.
+ */
+void __init xen_efi_runtime_setup(void)
+{
+ efi.get_time = xen_efi_get_time;
+ efi.set_time = xen_efi_set_time;
+ efi.get_wakeup_time = xen_efi_get_wakeup_time;
+ efi.set_wakeup_time = xen_efi_set_wakeup_time;
+ efi.get_variable = xen_efi_get_variable;
+ efi.get_next_variable = xen_efi_get_next_variable;
+ efi.set_variable = xen_efi_set_variable;
+ efi.query_variable_info = xen_efi_query_variable_info;
+ efi.update_capsule = xen_efi_update_capsule;
+ efi.query_capsule_caps = xen_efi_query_capsule_caps;
+ efi.get_next_high_mono_count = xen_efi_get_next_high_mono_count;
+ efi.reset_system = NULL; /* Functionality provided by Xen. */
+}
+EXPORT_SYMBOL_GPL(xen_efi_runtime_setup);
diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c
index 75cd7345c654..0bea3d271f6e 100644
--- a/arch/arm/xen/enlighten.c
+++ b/arch/arm/xen/enlighten.c
@@ -12,14 +12,16 @@
#include <xen/page.h>
#include <xen/interface/sched.h>
#include <xen/xen-ops.h>
-#include <asm/paravirt.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
+#include <asm/xen/xen-ops.h>
#include <asm/system_misc.h>
+#include <asm/efi.h>
#include <linux/interrupt.h>
#include <linux/irqreturn.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/of_fdt.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/cpuidle.h>
@@ -30,6 +32,7 @@
#include <linux/time64.h>
#include <linux/timekeeping.h>
#include <linux/timekeeper_internal.h>
+#include <linux/acpi.h>
#include <linux/mm.h>
@@ -46,14 +49,16 @@ struct shared_info *HYPERVISOR_shared_info = (void *)&xen_dummy_shared_info;
DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
static struct vcpu_info __percpu *xen_vcpu_info;
+/* Linux <-> Xen vCPU id mapping */
+DEFINE_PER_CPU(int, xen_vcpu_id) = -1;
+EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);
+
/* These are unused until we support booting "pre-ballooned" */
unsigned long xen_released_pages;
struct xen_memory_region xen_extra_mem[XEN_EXTRA_MEM_MAX_REGIONS] __initdata;
static __read_mostly unsigned int xen_events_irq;
-static __initdata struct device_node *xen_node;
-
int xen_remap_domain_gfn_array(struct vm_area_struct *vma,
unsigned long addr,
xen_pfn_t *gfn, int nr,
@@ -84,19 +89,6 @@ int xen_unmap_domain_gfn_range(struct vm_area_struct *vma,
}
EXPORT_SYMBOL_GPL(xen_unmap_domain_gfn_range);
-static unsigned long long xen_stolen_accounting(int cpu)
-{
- struct vcpu_runstate_info state;
-
- BUG_ON(cpu != smp_processor_id());
-
- xen_get_runstate_snapshot(&state);
-
- WARN_ON(state.state != RUNSTATE_running);
-
- return state.time[RUNSTATE_runnable] + state.time[RUNSTATE_offline];
-}
-
static void xen_read_wallclock(struct timespec64 *ts)
{
u32 version;
@@ -179,10 +171,14 @@ static void xen_percpu_init(void)
pr_info("Xen: initializing cpu%d\n", cpu);
vcpup = per_cpu_ptr(xen_vcpu_info, cpu);
+ /* Direct vCPU id mapping for ARM guests. */
+ per_cpu(xen_vcpu_id, cpu) = cpu;
+
info.mfn = virt_to_gfn(vcpup);
info.offset = xen_offset_in_page(vcpup);
- err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, cpu, &info);
+ err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, xen_vcpu_nr(cpu),
+ &info);
BUG_ON(err);
per_cpu(xen_vcpu, cpu) = vcpup;
@@ -237,6 +233,46 @@ static irqreturn_t xen_arm_callback(int irq, void *arg)
return IRQ_HANDLED;
}
+static __initdata struct {
+ const char *compat;
+ const char *prefix;
+ const char *version;
+ bool found;
+} hyper_node = {"xen,xen", "xen,xen-", NULL, false};
+
+static int __init fdt_find_hyper_node(unsigned long node, const char *uname,
+ int depth, void *data)
+{
+ const void *s = NULL;
+ int len;
+
+ if (depth != 1 || strcmp(uname, "hypervisor") != 0)
+ return 0;
+
+ if (of_flat_dt_is_compatible(node, hyper_node.compat))
+ hyper_node.found = true;
+
+ s = of_get_flat_dt_prop(node, "compatible", &len);
+ if (strlen(hyper_node.prefix) + 3 < len &&
+ !strncmp(hyper_node.prefix, s, strlen(hyper_node.prefix)))
+ hyper_node.version = s + strlen(hyper_node.prefix);
+
+ /*
+ * Check if Xen supports EFI by checking whether there is the
+ * "/hypervisor/uefi" node in DT. If so, runtime services are available
+ * through proxy functions (e.g. in case of Xen dom0 EFI implementation
+ * they call special hypercall which executes relevant EFI functions)
+ * and that is why they are always enabled.
+ */
+ if (IS_ENABLED(CONFIG_XEN_EFI)) {
+ if ((of_get_flat_dt_subnode_by_name(node, "uefi") > 0) &&
+ !efi_runtime_disabled())
+ set_bit(EFI_RUNTIME_SERVICES, &efi.flags);
+ }
+
+ return 0;
+}
+
/*
* see Documentation/devicetree/bindings/arm/xen.txt for the
* documentation of the Xen Device Tree format.
@@ -244,26 +280,18 @@ static irqreturn_t xen_arm_callback(int irq, void *arg)
#define GRANT_TABLE_PHYSADDR 0
void __init xen_early_init(void)
{
- int len;
- const char *s = NULL;
- const char *version = NULL;
- const char *xen_prefix = "xen,xen-";
-
- xen_node = of_find_compatible_node(NULL, NULL, "xen,xen");
- if (!xen_node) {
+ of_scan_flat_dt(fdt_find_hyper_node, NULL);
+ if (!hyper_node.found) {
pr_debug("No Xen support\n");
return;
}
- s = of_get_property(xen_node, "compatible", &len);
- if (strlen(xen_prefix) + 3 < len &&
- !strncmp(xen_prefix, s, strlen(xen_prefix)))
- version = s + strlen(xen_prefix);
- if (version == NULL) {
+
+ if (hyper_node.version == NULL) {
pr_debug("Xen version not found\n");
return;
}
- pr_info("Xen %s support found\n", version);
+ pr_info("Xen %s support found\n", hyper_node.version);
xen_domain_type = XEN_HVM_DOMAIN;
@@ -278,28 +306,68 @@ void __init xen_early_init(void)
add_preferred_console("hvc", 0, NULL);
}
+static void __init xen_acpi_guest_init(void)
+{
+#ifdef CONFIG_ACPI
+ struct xen_hvm_param a;
+ int interrupt, trigger, polarity;
+
+ a.domid = DOMID_SELF;
+ a.index = HVM_PARAM_CALLBACK_IRQ;
+
+ if (HYPERVISOR_hvm_op(HVMOP_get_param, &a)
+ || (a.value >> 56) != HVM_PARAM_CALLBACK_TYPE_PPI) {
+ xen_events_irq = 0;
+ return;
+ }
+
+ interrupt = a.value & 0xff;
+ trigger = ((a.value >> 8) & 0x1) ? ACPI_EDGE_SENSITIVE
+ : ACPI_LEVEL_SENSITIVE;
+ polarity = ((a.value >> 8) & 0x2) ? ACPI_ACTIVE_LOW
+ : ACPI_ACTIVE_HIGH;
+ xen_events_irq = acpi_register_gsi(NULL, interrupt, trigger, polarity);
+#endif
+}
+
+static void __init xen_dt_guest_init(void)
+{
+ struct device_node *xen_node;
+
+ xen_node = of_find_compatible_node(NULL, NULL, "xen,xen");
+ if (!xen_node) {
+ pr_err("Xen support was detected before, but it has disappeared\n");
+ return;
+ }
+
+ xen_events_irq = irq_of_parse_and_map(xen_node, 0);
+}
+
static int __init xen_guest_init(void)
{
struct xen_add_to_physmap xatp;
struct shared_info *shared_info_page = NULL;
- struct resource res;
- phys_addr_t grant_frames;
if (!xen_domain())
return 0;
- if (of_address_to_resource(xen_node, GRANT_TABLE_PHYSADDR, &res)) {
- pr_err("Xen grant table base address not found\n");
- return -ENODEV;
- }
- grant_frames = res.start;
+ if (!acpi_disabled)
+ xen_acpi_guest_init();
+ else
+ xen_dt_guest_init();
- xen_events_irq = irq_of_parse_and_map(xen_node, 0);
if (!xen_events_irq) {
pr_err("Xen event channel interrupt not found\n");
return -ENODEV;
}
+ /*
+ * The fdt parsing codes have set EFI_RUNTIME_SERVICES if Xen EFI
+ * parameters are found. Force enable runtime services.
+ */
+ if (efi_enabled(EFI_RUNTIME_SERVICES))
+ xen_efi_runtime_setup();
+
shared_info_page = (struct shared_info *)get_zeroed_page(GFP_KERNEL);
if (!shared_info_page) {
@@ -328,7 +396,13 @@ static int __init xen_guest_init(void)
if (xen_vcpu_info == NULL)
return -ENOMEM;
- if (gnttab_setup_auto_xlat_frames(grant_frames)) {
+ /* Direct vCPU id mapping for ARM guests. */
+ per_cpu(xen_vcpu_id, 0) = 0;
+
+ xen_auto_xlat_grant_frames.count = gnttab_max_grant_frames();
+ if (xen_xlate_map_ballooned_pages(&xen_auto_xlat_grant_frames.pfn,
+ &xen_auto_xlat_grant_frames.vaddr,
+ xen_auto_xlat_grant_frames.count)) {
free_percpu(xen_vcpu_info);
return -ENOMEM;
}
@@ -355,8 +429,8 @@ static int __init xen_guest_init(void)
register_cpu_notifier(&xen_cpu_notifier);
- pv_time_ops.steal_clock = xen_stolen_accounting;
- static_key_slow_inc(&paravirt_steal_enabled);
+ xen_time_setup_guest();
+
if (xen_initial_domain())
pvclock_gtod_register_notifier(&xen_pvclock_gtod_notifier);
@@ -403,4 +477,5 @@ EXPORT_SYMBOL_GPL(HYPERVISOR_vcpu_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_tmem_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_platform_op);
EXPORT_SYMBOL_GPL(HYPERVISOR_multicall);
+EXPORT_SYMBOL_GPL(HYPERVISOR_vm_assist);
EXPORT_SYMBOL_GPL(privcmd_call);
diff --git a/arch/arm/xen/hypercall.S b/arch/arm/xen/hypercall.S
index 9a36f4f49c10..a648dfc3be30 100644
--- a/arch/arm/xen/hypercall.S
+++ b/arch/arm/xen/hypercall.S
@@ -91,6 +91,7 @@ HYPERCALL3(vcpu_op);
HYPERCALL1(tmem_op);
HYPERCALL1(platform_op_raw);
HYPERCALL2(multicall);
+HYPERCALL2(vm_assist);
ENTRY(privcmd_call)
stmdb sp!, {r4}
diff --git a/arch/arm64/include/asm/xen/xen-ops.h b/arch/arm64/include/asm/xen/xen-ops.h
new file mode 100644
index 000000000000..ec154e719b11
--- /dev/null
+++ b/arch/arm64/include/asm/xen/xen-ops.h
@@ -0,0 +1,6 @@
+#ifndef _ASM_XEN_OPS_H
+#define _ASM_XEN_OPS_H
+
+void xen_efi_runtime_setup(void);
+
+#endif /* _ASM_XEN_OPS_H */
diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c
index 5b8256770e22..2981f1bdd073 100644
--- a/arch/arm64/kernel/setup.c
+++ b/arch/arm64/kernel/setup.c
@@ -257,6 +257,7 @@ void __init setup_arch(char **cmdline_p)
*/
cpu_uninstall_idmap();
+ xen_early_init();
efi_init();
arm64_memblock_init();
@@ -283,8 +284,6 @@ void __init setup_arch(char **cmdline_p)
else
psci_acpi_init();
- xen_early_init();
-
cpu_read_bootcpu_ops();
smp_init_cpus();
smp_build_mpidr_hash();
diff --git a/arch/arm64/xen/Makefile b/arch/arm64/xen/Makefile
index 74a8d87e542b..8ff8aa9c6228 100644
--- a/arch/arm64/xen/Makefile
+++ b/arch/arm64/xen/Makefile
@@ -1,2 +1,3 @@
xen-arm-y += $(addprefix ../../arm/xen/, enlighten.o grant-table.o p2m.o mm.o)
obj-y := xen-arm.o hypercall.o
+obj-$(CONFIG_XEN_EFI) += $(addprefix ../../arm/xen/, efi.o)
diff --git a/arch/arm64/xen/hypercall.S b/arch/arm64/xen/hypercall.S
index 70df80e8da2c..329c8027b0a9 100644
--- a/arch/arm64/xen/hypercall.S
+++ b/arch/arm64/xen/hypercall.S
@@ -82,6 +82,7 @@ HYPERCALL3(vcpu_op);
HYPERCALL1(tmem_op);
HYPERCALL1(platform_op_raw);
HYPERCALL2(multicall);
+HYPERCALL2(vm_assist);
ENTRY(privcmd_call)
mov x16, x0
diff --git a/arch/x86/include/asm/cpu.h b/arch/x86/include/asm/cpu.h
index 59d34c521d96..9b7fa6313f1a 100644
--- a/arch/x86/include/asm/cpu.h
+++ b/arch/x86/include/asm/cpu.h
@@ -16,6 +16,7 @@ extern void prefill_possible_map(void);
static inline void prefill_possible_map(void) {}
#define cpu_physical_id(cpu) boot_cpu_physical_apicid
+#define cpu_acpi_id(cpu) 0
#define safe_smp_processor_id() 0
#endif /* CONFIG_SMP */
diff --git a/arch/x86/include/asm/smp.h b/arch/x86/include/asm/smp.h
index c9734dc76257..ebd0c164cd4e 100644
--- a/arch/x86/include/asm/smp.h
+++ b/arch/x86/include/asm/smp.h
@@ -33,6 +33,7 @@ static inline struct cpumask *cpu_llc_shared_mask(int cpu)
}
DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_cpu_to_apicid);
+DECLARE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid);
DECLARE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_bios_cpu_apicid);
#if defined(CONFIG_X86_LOCAL_APIC) && defined(CONFIG_X86_32)
DECLARE_EARLY_PER_CPU_READ_MOSTLY(int, x86_cpu_to_logical_apicid);
@@ -148,6 +149,7 @@ void x86_idle_thread_init(unsigned int cpu, struct task_struct *idle);
void smp_store_boot_cpu_info(void);
void smp_store_cpu_info(int id);
#define cpu_physical_id(cpu) per_cpu(x86_cpu_to_apicid, cpu)
+#define cpu_acpi_id(cpu) per_cpu(x86_cpu_to_acpiid, cpu)
#else /* !CONFIG_SMP */
#define wbinvd_on_cpu(cpu) wbinvd()
diff --git a/arch/x86/include/asm/xen/cpuid.h b/arch/x86/include/asm/xen/cpuid.h
index 0d809e9fc975..3bdd10d71223 100644
--- a/arch/x86/include/asm/xen/cpuid.h
+++ b/arch/x86/include/asm/xen/cpuid.h
@@ -76,15 +76,18 @@
/*
* Leaf 5 (0x40000x04)
* HVM-specific features
+ * EAX: Features
+ * EBX: vcpu id (iff EAX has XEN_HVM_CPUID_VCPU_ID_PRESENT flag)
*/
-/* EAX Features */
/* Virtualized APIC registers */
#define XEN_HVM_CPUID_APIC_ACCESS_VIRT (1u << 0)
/* Virtualized x2APIC accesses */
#define XEN_HVM_CPUID_X2APIC_VIRT (1u << 1)
/* Memory mapped from other domains has valid IOMMU entries */
#define XEN_HVM_CPUID_IOMMU_MAPPINGS (1u << 2)
+/* vcpu id is present in EBX */
+#define XEN_HVM_CPUID_VCPU_ID_PRESENT (1u << 3)
#define XEN_CPUID_MAX_NUM_LEAVES 4
diff --git a/arch/x86/kernel/acpi/boot.c b/arch/x86/kernel/acpi/boot.c
index 9414f84584e4..6738e5c82cca 100644
--- a/arch/x86/kernel/acpi/boot.c
+++ b/arch/x86/kernel/acpi/boot.c
@@ -161,13 +161,15 @@ static int __init acpi_parse_madt(struct acpi_table_header *table)
/**
* acpi_register_lapic - register a local apic and generates a logic cpu number
* @id: local apic id to register
+ * @acpiid: ACPI id to register
* @enabled: this cpu is enabled or not
*
* Returns the logic cpu number which maps to the local apic
*/
-static int acpi_register_lapic(int id, u8 enabled)
+static int acpi_register_lapic(int id, u32 acpiid, u8 enabled)
{
unsigned int ver = 0;
+ int cpu;
if (id >= MAX_LOCAL_APIC) {
printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
@@ -182,7 +184,11 @@ static int acpi_register_lapic(int id, u8 enabled)
if (boot_cpu_physical_apicid != -1U)
ver = apic_version[boot_cpu_physical_apicid];
- return generic_processor_info(id, ver);
+ cpu = generic_processor_info(id, ver);
+ if (cpu >= 0)
+ early_per_cpu(x86_cpu_to_acpiid, cpu) = acpiid;
+
+ return cpu;
}
static int __init
@@ -212,7 +218,7 @@ acpi_parse_x2apic(struct acpi_subtable_header *header, const unsigned long end)
if (!apic->apic_id_valid(apic_id) && enabled)
printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
else
- acpi_register_lapic(apic_id, enabled);
+ acpi_register_lapic(apic_id, processor->uid, enabled);
#else
printk(KERN_WARNING PREFIX "x2apic entry ignored\n");
#endif
@@ -240,6 +246,7 @@ acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end)
* when we use CPU hotplug.
*/
acpi_register_lapic(processor->id, /* APIC ID */
+ processor->processor_id, /* ACPI ID */
processor->lapic_flags & ACPI_MADT_ENABLED);
return 0;
@@ -258,6 +265,7 @@ acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end)
acpi_table_print_madt_entry(header);
acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */
+ processor->processor_id, /* ACPI ID */
processor->lapic_flags & ACPI_MADT_ENABLED);
return 0;
@@ -714,7 +722,7 @@ int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu)
{
int cpu;
- cpu = acpi_register_lapic(physid, ACPI_MADT_ENABLED);
+ cpu = acpi_register_lapic(physid, U32_MAX, ACPI_MADT_ENABLED);
if (cpu < 0) {
pr_info(PREFIX "Unable to map lapic to logical cpu number\n");
return cpu;
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index f943d2f453a4..ac8d8ad8b009 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -92,8 +92,10 @@ static int apic_extnmi = APIC_EXTNMI_BSP;
*/
DEFINE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_cpu_to_apicid, BAD_APICID);
DEFINE_EARLY_PER_CPU_READ_MOSTLY(u16, x86_bios_cpu_apicid, BAD_APICID);
+DEFINE_EARLY_PER_CPU_READ_MOSTLY(u32, x86_cpu_to_acpiid, U32_MAX);
EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_apicid);
EXPORT_EARLY_PER_CPU_SYMBOL(x86_bios_cpu_apicid);
+EXPORT_EARLY_PER_CPU_SYMBOL(x86_cpu_to_acpiid);
#ifdef CONFIG_X86_32
diff --git a/arch/x86/kernel/setup_percpu.c b/arch/x86/kernel/setup_percpu.c
index e4fcb87ba7a6..7a40e068302d 100644
--- a/arch/x86/kernel/setup_percpu.c
+++ b/arch/x86/kernel/setup_percpu.c
@@ -236,6 +236,8 @@ void __init setup_per_cpu_areas(void)
early_per_cpu_map(x86_cpu_to_apicid, cpu);
per_cpu(x86_bios_cpu_apicid, cpu) =
early_per_cpu_map(x86_bios_cpu_apicid, cpu);
+ per_cpu(x86_cpu_to_acpiid, cpu) =
+ early_per_cpu_map(x86_cpu_to_acpiid, cpu);
#endif
#ifdef CONFIG_X86_32
per_cpu(x86_cpu_to_logical_apicid, cpu) =
@@ -271,6 +273,7 @@ void __init setup_per_cpu_areas(void)
#ifdef CONFIG_X86_LOCAL_APIC
early_per_cpu_ptr(x86_cpu_to_apicid) = NULL;
early_per_cpu_ptr(x86_bios_cpu_apicid) = NULL;
+ early_per_cpu_ptr(x86_cpu_to_acpiid) = NULL;
#endif
#ifdef CONFIG_X86_32
early_per_cpu_ptr(x86_cpu_to_logical_apicid) = NULL;
diff --git a/arch/x86/xen/efi.c b/arch/x86/xen/efi.c
index be14cc3e48d5..3be012115853 100644
--- a/arch/x86/xen/efi.c
+++ b/arch/x86/xen/efi.c
@@ -20,10 +20,121 @@
#include <linux/init.h>
#include <linux/string.h>
+#include <xen/xen.h>
#include <xen/xen-ops.h>
+#include <xen/interface/platform.h>
#include <asm/page.h>
#include <asm/setup.h>
+#include <asm/xen/hypercall.h>
+
+static efi_char16_t vendor[100] __initdata;
+
+static efi_system_table_t efi_systab_xen __initdata = {
+ .hdr = {
+ .signature = EFI_SYSTEM_TABLE_SIGNATURE,
+ .revision = 0, /* Initialized later. */
+ .headersize = 0, /* Ignored by Linux Kernel. */
+ .crc32 = 0, /* Ignored by Linux Kernel. */
+ .reserved = 0
+ },
+ .fw_vendor = EFI_INVALID_TABLE_ADDR, /* Initialized later. */
+ .fw_revision = 0, /* Initialized later. */
+ .con_in_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .con_in = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .con_out_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .con_out = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .stderr_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .stderr = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
+ .runtime = (efi_runtime_services_t *)EFI_INVALID_TABLE_ADDR,
+ /* Not used under Xen. */
+ .boottime = (efi_boot_services_t *)EFI_INVALID_TABLE_ADDR,
+ /* Not used under Xen. */
+ .nr_tables = 0, /* Initialized later. */
+ .tables = EFI_INVALID_TABLE_ADDR /* Initialized later. */
+};
+
+static const struct efi efi_xen __initconst = {
+ .systab = NULL, /* Initialized later. */
+ .runtime_version = 0, /* Initialized later. */
+ .mps = EFI_INVALID_TABLE_ADDR,
+ .acpi = EFI_INVALID_TABLE_ADDR,
+ .acpi20 = EFI_INVALID_TABLE_ADDR,
+ .smbios = EFI_INVALID_TABLE_ADDR,
+ .smbios3 = EFI_INVALID_TABLE_ADDR,
+ .sal_systab = EFI_INVALID_TABLE_ADDR,
+ .boot_info = EFI_INVALID_TABLE_ADDR,
+ .hcdp = EFI_INVALID_TABLE_ADDR,
+ .uga = EFI_INVALID_TABLE_ADDR,
+ .uv_systab = EFI_INVALID_TABLE_ADDR,
+ .fw_vendor = EFI_INVALID_TABLE_ADDR,
+ .runtime = EFI_INVALID_TABLE_ADDR,
+ .config_table = EFI_INVALID_TABLE_ADDR,
+ .get_time = xen_efi_get_time,
+ .set_time = xen_efi_set_time,
+ .get_wakeup_time = xen_efi_get_wakeup_time,
+ .set_wakeup_time = xen_efi_set_wakeup_time,
+ .get_variable = xen_efi_get_variable,
+ .get_next_variable = xen_efi_get_next_variable,
+ .set_variable = xen_efi_set_variable,
+ .query_variable_info = xen_efi_query_variable_info,
+ .update_capsule = xen_efi_update_capsule,
+ .query_capsule_caps = xen_efi_query_capsule_caps,
+ .get_next_high_mono_count = xen_efi_get_next_high_mono_count,
+ .reset_system = NULL, /* Functionality provided by Xen. */
+ .set_virtual_address_map = NULL, /* Not used under Xen. */
+ .flags = 0 /* Initialized later. */
+};
+
+static efi_system_table_t __init *xen_efi_probe(void)
+{
+ struct xen_platform_op op = {
+ .cmd = XENPF_firmware_info,
+ .u.firmware_info = {
+ .type = XEN_FW_EFI_INFO,
+ .index = XEN_FW_EFI_CONFIG_TABLE
+ }
+ };
+ union xenpf_efi_info *info = &op.u.firmware_info.u.efi_info;
+
+ if (!xen_initial_domain() || HYPERVISOR_platform_op(&op) < 0)
+ return NULL;
+
+ /* Here we know that Xen runs on EFI platform. */
+
+ efi = efi_xen;
+
+ efi_systab_xen.tables = info->cfg.addr;
+ efi_systab_xen.nr_tables = info->cfg.nent;
+
+ op.cmd = XENPF_firmware_info;
+ op.u.firmware_info.type = XEN_FW_EFI_INFO;
+ op.u.firmware_info.index = XEN_FW_EFI_VENDOR;
+ info->vendor.bufsz = sizeof(vendor);
+ set_xen_guest_handle(info->vendor.name, vendor);
+
+ if (HYPERVISOR_platform_op(&op) == 0) {
+ efi_systab_xen.fw_vendor = __pa_symbol(vendor);
+ efi_systab_xen.fw_revision = info->vendor.revision;
+ } else
+ efi_systab_xen.fw_vendor = __pa_symbol(L"UNKNOWN");
+
+ op.cmd = XENPF_firmware_info;
+ op.u.firmware_info.type = XEN_FW_EFI_INFO;
+ op.u.firmware_info.index = XEN_FW_EFI_VERSION;
+
+ if (HYPERVISOR_platform_op(&op) == 0)
+ efi_systab_xen.hdr.revision = info->version;
+
+ op.cmd = XENPF_firmware_info;
+ op.u.firmware_info.type = XEN_FW_EFI_INFO;
+ op.u.firmware_info.index = XEN_FW_EFI_RT_VERSION;
+
+ if (HYPERVISOR_platform_op(&op) == 0)
+ efi.runtime_version = info->version;
+
+ return &efi_systab_xen;
+}
void __init xen_efi_init(void)
{
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 0f87db2cc6a8..69b4b6d29738 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -59,6 +59,7 @@
#include <asm/xen/pci.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
+#include <asm/xen/cpuid.h>
#include <asm/fixmap.h>
#include <asm/processor.h>
#include <asm/proto.h>
@@ -118,6 +119,10 @@ DEFINE_PER_CPU(struct vcpu_info *, xen_vcpu);
*/
DEFINE_PER_CPU(struct vcpu_info, xen_vcpu_info);
+/* Linux <-> Xen vCPU id mapping */
+DEFINE_PER_CPU(int, xen_vcpu_id) = -1;
+EXPORT_PER_CPU_SYMBOL(xen_vcpu_id);
+
enum xen_domain_type xen_domain_type = XEN_NATIVE;
EXPORT_SYMBOL_GPL(xen_domain_type);
@@ -179,7 +184,7 @@ static void clamp_max_cpus(void)
#endif
}
-static void xen_vcpu_setup(int cpu)
+void xen_vcpu_setup(int cpu)
{
struct vcpu_register_vcpu_info info;
int err;
@@ -202,8 +207,9 @@ static void xen_vcpu_setup(int cpu)
if (per_cpu(xen_vcpu, cpu) == &per_cpu(xen_vcpu_info, cpu))
return;
}
- if (cpu < MAX_VIRT_CPUS)
- per_cpu(xen_vcpu,cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu];
+ if (xen_vcpu_nr(cpu) < MAX_VIRT_CPUS)
+ per_cpu(xen_vcpu, cpu) =
+ &HYPERVISOR_shared_info->vcpu_info[xen_vcpu_nr(cpu)];
if (!have_vcpu_info_placement) {
if (cpu >= MAX_VIRT_CPUS)
@@ -223,7 +229,8 @@ static void xen_vcpu_setup(int cpu)
hypervisor has no unregister variant and this hypercall does not
allow to over-write info.mfn and info.offset.
*/
- err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, cpu, &info);
+ err = HYPERVISOR_vcpu_op(VCPUOP_register_vcpu_info, xen_vcpu_nr(cpu),
+ &info);
if (err) {
printk(KERN_DEBUG "register_vcpu_info failed: err=%d\n", err);
@@ -247,10 +254,11 @@ void xen_vcpu_restore(void)
for_each_possible_cpu(cpu) {
bool other_cpu = (cpu != smp_processor_id());
- bool is_up = HYPERVISOR_vcpu_op(VCPUOP_is_up, cpu, NULL);
+ bool is_up = HYPERVISOR_vcpu_op(VCPUOP_is_up, xen_vcpu_nr(cpu),
+ NULL);
if (other_cpu && is_up &&
- HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL))
+ HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(cpu), NULL))
BUG();
xen_setup_runstate_info(cpu);
@@ -259,7 +267,7 @@ void xen_vcpu_restore(void)
xen_vcpu_setup(cpu);
if (other_cpu && is_up &&
- HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL))
+ HYPERVISOR_vcpu_op(VCPUOP_up, xen_vcpu_nr(cpu), NULL))
BUG();
}
}
@@ -588,7 +596,7 @@ static void xen_load_gdt(const struct desc_ptr *dtr)
{
unsigned long va = dtr->address;
unsigned int size = dtr->size + 1;
- unsigned pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
+ unsigned pages = DIV_ROUND_UP(size, PAGE_SIZE);
unsigned long frames[pages];
int f;
@@ -637,7 +645,7 @@ static void __init xen_load_gdt_boot(const struct desc_ptr *dtr)
{
unsigned long va = dtr->address;
unsigned int size = dtr->size + 1;
- unsigned pages = (size + PAGE_SIZE - 1) / PAGE_SIZE;
+ unsigned pages = DIV_ROUND_UP(size, PAGE_SIZE);
unsigned long frames[pages];
int f;
@@ -1135,8 +1143,11 @@ void xen_setup_vcpu_info_placement(void)
{
int cpu;
- for_each_possible_cpu(cpu)
+ for_each_possible_cpu(cpu) {
+ /* Set up direct vCPU id mapping for PV guests. */
+ per_cpu(xen_vcpu_id, cpu) = cpu;
xen_vcpu_setup(cpu);
+ }
/* xen_vcpu_setup managed to place the vcpu_info within the
* percpu area for all cpus, so make use of it. Note that for
@@ -1727,6 +1738,9 @@ asmlinkage __visible void __init xen_start_kernel(void)
#endif
xen_raw_console_write("about to get started...\n");
+ /* Let's presume PV guests always boot on vCPU with id 0. */
+ per_cpu(xen_vcpu_id, 0) = 0;
+
xen_setup_runstate_info(0);
xen_efi_init();
@@ -1768,9 +1782,10 @@ void __ref xen_hvm_init_shared_info(void)
* in that case multiple vcpus might be online. */
for_each_online_cpu(cpu) {
/* Leave it to be NULL. */
- if (cpu >= MAX_VIRT_CPUS)
+ if (xen_vcpu_nr(cpu) >= MAX_VIRT_CPUS)
continue;
- per_cpu(xen_vcpu, cpu) = &HYPERVISOR_shared_info->vcpu_info[cpu];
+ per_cpu(xen_vcpu, cpu) =
+ &HYPERVISOR_shared_info->vcpu_info[xen_vcpu_nr(cpu)];
}
}
@@ -1795,6 +1810,12 @@ static void __init init_hvm_pv_info(void)
xen_setup_features();
+ cpuid(base + 4, &eax, &ebx, &ecx, &edx);
+ if (eax & XEN_HVM_CPUID_VCPU_ID_PRESENT)
+ this_cpu_write(xen_vcpu_id, ebx);
+ else
+ this_cpu_write(xen_vcpu_id, smp_processor_id());
+
pv_info.name = "Xen HVM";
xen_domain_type = XEN_HVM_DOMAIN;
@@ -1806,6 +1827,10 @@ static int xen_hvm_cpu_notify(struct notifier_block *self, unsigned long action,
int cpu = (long)hcpu;
switch (action) {
case CPU_UP_PREPARE:
+ if (cpu_acpi_id(cpu) != U32_MAX)
+ per_cpu(xen_vcpu_id, cpu) = cpu_acpi_id(cpu);
+ else
+ per_cpu(xen_vcpu_id, cpu) = cpu;
xen_vcpu_setup(cpu);
if (xen_have_vector_callback) {
if (xen_feature(XENFEAT_hvm_safe_pvclock))
diff --git a/arch/x86/xen/grant-table.c b/arch/x86/xen/grant-table.c
index e079500b17f3..de4144c24f1c 100644
--- a/arch/x86/xen/grant-table.c
+++ b/arch/x86/xen/grant-table.c
@@ -111,63 +111,18 @@ int arch_gnttab_init(unsigned long nr_shared)
}
#ifdef CONFIG_XEN_PVH
-#include <xen/balloon.h>
#include <xen/events.h>
-#include <linux/slab.h>
-static int __init xlated_setup_gnttab_pages(void)
-{
- struct page **pages;
- xen_pfn_t *pfns;
- void *vaddr;
- int rc;
- unsigned int i;
- unsigned long nr_grant_frames = gnttab_max_grant_frames();
-
- BUG_ON(nr_grant_frames == 0);
- pages = kcalloc(nr_grant_frames, sizeof(pages[0]), GFP_KERNEL);
- if (!pages)
- return -ENOMEM;
-
- pfns = kcalloc(nr_grant_frames, sizeof(pfns[0]), GFP_KERNEL);
- if (!pfns) {
- kfree(pages);
- return -ENOMEM;
- }
- rc = alloc_xenballooned_pages(nr_grant_frames, pages);
- if (rc) {
- pr_warn("%s Couldn't balloon alloc %ld pfns rc:%d\n", __func__,
- nr_grant_frames, rc);
- kfree(pages);
- kfree(pfns);
- return rc;
- }
- for (i = 0; i < nr_grant_frames; i++)
- pfns[i] = page_to_pfn(pages[i]);
-
- vaddr = vmap(pages, nr_grant_frames, 0, PAGE_KERNEL);
- if (!vaddr) {
- pr_warn("%s Couldn't map %ld pfns rc:%d\n", __func__,
- nr_grant_frames, rc);
- free_xenballooned_pages(nr_grant_frames, pages);
- kfree(pages);
- kfree(pfns);
- return -ENOMEM;
- }
- kfree(pages);
-
- xen_auto_xlat_grant_frames.pfn = pfns;
- xen_auto_xlat_grant_frames.count = nr_grant_frames;
- xen_auto_xlat_grant_frames.vaddr = vaddr;
-
- return 0;
-}
-
+#include <xen/xen-ops.h>
static int __init xen_pvh_gnttab_setup(void)
{
if (!xen_pvh_domain())
return -ENODEV;
- return xlated_setup_gnttab_pages();
+ xen_auto_xlat_grant_frames.count = gnttab_max_grant_frames();
+
+ return xen_xlate_map_ballooned_pages(&xen_auto_xlat_grant_frames.pfn,
+ &xen_auto_xlat_grant_frames.vaddr,
+ xen_auto_xlat_grant_frames.count);
}
/* Call it _before_ __gnttab_init as we need to initialize the
* xen_auto_xlat_grant_frames first. */
diff --git a/arch/x86/xen/irq.c b/arch/x86/xen/irq.c
index a1207cb6472a..33e92955e09d 100644
--- a/arch/x86/xen/irq.c
+++ b/arch/x86/xen/irq.c
@@ -109,7 +109,8 @@ static void xen_safe_halt(void)
static void xen_halt(void)
{
if (irqs_disabled())
- HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL);
+ HYPERVISOR_vcpu_op(VCPUOP_down,
+ xen_vcpu_nr(smp_processor_id()), NULL);
else
xen_safe_halt();
}
diff --git a/arch/x86/xen/pmu.c b/arch/x86/xen/pmu.c
index 9466354d3e49..32bdc2c90297 100644
--- a/arch/x86/xen/pmu.c
+++ b/arch/x86/xen/pmu.c
@@ -547,7 +547,7 @@ void xen_pmu_init(int cpu)
return;
fail:
- pr_warn_once("Could not initialize VPMU for cpu %d, error %d\n",
+ pr_info_once("Could not initialize VPMU for cpu %d, error %d\n",
cpu, err);
free_pages((unsigned long)xenpmu_data, 0);
}
diff --git a/arch/x86/xen/smp.c b/arch/x86/xen/smp.c
index 719cf291dcdf..0b4d04c8ab4d 100644
--- a/arch/x86/xen/smp.c
+++ b/arch/x86/xen/smp.c
@@ -322,6 +322,13 @@ static void __init xen_smp_prepare_boot_cpu(void)
xen_filter_cpu_maps();
xen_setup_vcpu_info_placement();
}
+
+ /*
+ * Setup vcpu_info for boot CPU.
+ */
+ if (xen_hvm_domain())
+ xen_vcpu_setup(0);
+
/*
* The alternative logic (which patches the unlock/lock) runs before
* the smp bootup up code is activated. Hence we need to set this up
@@ -454,7 +461,7 @@ cpu_initialize_context(unsigned int cpu, struct task_struct *idle)
#endif
ctxt->user_regs.esp = idle->thread.sp0 - sizeof(struct pt_regs);
ctxt->ctrlreg[3] = xen_pfn_to_cr3(virt_to_gfn(swapper_pg_dir));
- if (HYPERVISOR_vcpu_op(VCPUOP_initialise, cpu, ctxt))
+ if (HYPERVISOR_vcpu_op(VCPUOP_initialise, xen_vcpu_nr(cpu), ctxt))
BUG();
kfree(ctxt);
@@ -492,7 +499,7 @@ static int xen_cpu_up(unsigned int cpu, struct task_struct *idle)
if (rc)
return rc;
- rc = HYPERVISOR_vcpu_op(VCPUOP_up, cpu, NULL);
+ rc = HYPERVISOR_vcpu_op(VCPUOP_up, xen_vcpu_nr(cpu), NULL);
BUG_ON(rc);
while (cpu_report_state(cpu) != CPU_ONLINE)
@@ -520,7 +527,8 @@ static int xen_cpu_disable(void)
static void xen_cpu_die(unsigned int cpu)
{
- while (xen_pv_domain() && HYPERVISOR_vcpu_op(VCPUOP_is_up, cpu, NULL)) {
+ while (xen_pv_domain() && HYPERVISOR_vcpu_op(VCPUOP_is_up,
+ xen_vcpu_nr(cpu), NULL)) {
__set_current_state(TASK_UNINTERRUPTIBLE);
schedule_timeout(HZ/10);
}
@@ -536,7 +544,7 @@ static void xen_cpu_die(unsigned int cpu)
static void xen_play_dead(void) /* used only with HOTPLUG_CPU */
{
play_dead_common();
- HYPERVISOR_vcpu_op(VCPUOP_down, smp_processor_id(), NULL);
+ HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(smp_processor_id()), NULL);
cpu_bringup();
/*
* commit 4b0c0f294 (tick: Cleanup NOHZ per cpu data on cpu down)
@@ -576,7 +584,7 @@ static void stop_self(void *v)
set_cpu_online(cpu, false);
- HYPERVISOR_vcpu_op(VCPUOP_down, cpu, NULL);
+ HYPERVISOR_vcpu_op(VCPUOP_down, xen_vcpu_nr(cpu), NULL);
BUG();
}
diff --git a/arch/x86/xen/time.c b/arch/x86/xen/time.c
index 6deba5bc7e34..67356d29d74d 100644
--- a/arch/x86/xen/time.c
+++ b/arch/x86/xen/time.c
@@ -11,8 +11,6 @@
#include <linux/interrupt.h>
#include <linux/clocksource.h>
#include <linux/clockchips.h>
-#include <linux/kernel_stat.h>
-#include <linux/math64.h>
#include <linux/gfp.h>
#include <linux/slab.h>
#include <linux/pvclock_gtod.h>
@@ -31,44 +29,6 @@
/* Xen may fire a timer up to this many ns early */
#define TIMER_SLOP 100000
-#define NS_PER_TICK (1000000000LL / HZ)
-
-/* snapshots of runstate info */
-static DEFINE_PER_CPU(struct vcpu_runstate_info, xen_runstate_snapshot);
-
-/* unused ns of stolen time */
-static DEFINE_PER_CPU(u64, xen_residual_stolen);
-
-static void do_stolen_accounting(void)
-{
- struct vcpu_runstate_info state;
- struct vcpu_runstate_info *snap;
- s64 runnable, offline, stolen;
- cputime_t ticks;
-
- xen_get_runstate_snapshot(&state);
-
- WARN_ON(state.state != RUNSTATE_running);
-
- snap = this_cpu_ptr(&xen_runstate_snapshot);
-
- /* work out how much time the VCPU has not been runn*ing* */
- runnable = state.time[RUNSTATE_runnable] - snap->time[RUNSTATE_runnable];
- offline = state.time[RUNSTATE_offline] - snap->time[RUNSTATE_offline];
-
- *snap = state;
-
- /* Add the appropriate number of ticks of stolen time,
- including any left-overs from last time. */
- stolen = runnable + offline + __this_cpu_read(xen_residual_stolen);
-
- if (stolen < 0)
- stolen = 0;
-
- ticks = iter_div_u64_rem(stolen, NS_PER_TICK, &stolen);
- __this_cpu_write(xen_residual_stolen, stolen);
- account_steal_ticks(ticks);
-}
/* Get the TSC speed from Xen */
static unsigned long xen_tsc_khz(void)
@@ -263,8 +223,10 @@ static int xen_vcpuop_shutdown(struct clock_event_device *evt)
{
int cpu = smp_processor_id();
- if (HYPERVISOR_vcpu_op(VCPUOP_stop_singleshot_timer, cpu, NULL) ||
- HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, cpu, NULL))
+ if (HYPERVISOR_vcpu_op(VCPUOP_stop_singleshot_timer, xen_vcpu_nr(cpu),
+ NULL) ||
+ HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, xen_vcpu_nr(cpu),
+ NULL))
BUG();
return 0;
@@ -274,7 +236,8 @@ static int xen_vcpuop_set_oneshot(struct clock_event_device *evt)
{
int cpu = smp_processor_id();
- if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, cpu, NULL))
+ if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, xen_vcpu_nr(cpu),
+ NULL))
BUG();
return 0;
@@ -293,7 +256,8 @@ static int xen_vcpuop_set_next_event(unsigned long delta,
/* Get an event anyway, even if the timeout is already expired */
single.flags = 0;
- ret = HYPERVISOR_vcpu_op(VCPUOP_set_singleshot_timer, cpu, &single);
+ ret = HYPERVISOR_vcpu_op(VCPUOP_set_singleshot_timer, xen_vcpu_nr(cpu),
+ &single);
BUG_ON(ret != 0);
return ret;
@@ -335,8 +299,6 @@ static irqreturn_t xen_timer_interrupt(int irq, void *dev_id)
ret = IRQ_HANDLED;
}
- do_stolen_accounting();
-
return ret;
}
@@ -394,13 +356,15 @@ void xen_timer_resume(void)
return;
for_each_online_cpu(cpu) {
- if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, cpu, NULL))
+ if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer,
+ xen_vcpu_nr(cpu), NULL))
BUG();
}
}
static const struct pv_time_ops xen_time_ops __initconst = {
.sched_clock = xen_clocksource_read,
+ .steal_clock = xen_steal_clock,
};
static void __init xen_time_init(void)
@@ -414,7 +378,8 @@ static void __init xen_time_init(void)
clocksource_register_hz(&xen_clocksource, NSEC_PER_SEC);
- if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, cpu, NULL) == 0) {
+ if (HYPERVISOR_vcpu_op(VCPUOP_stop_periodic_timer, xen_vcpu_nr(cpu),
+ NULL) == 0) {
/* Successfully turned off 100Hz tick, so we have the
vcpuop-based timer interface */
printk(KERN_DEBUG "Xen: using vcpuop timer interface\n");
@@ -431,6 +396,8 @@ static void __init xen_time_init(void)
xen_setup_timer(cpu);
xen_setup_cpu_clockevents();
+ xen_time_setup_guest();
+
if (xen_initial_domain())
pvclock_gtod_register_notifier(&xen_pvclock_gtod_notifier);
}
diff --git a/arch/x86/xen/xen-ops.h b/arch/x86/xen/xen-ops.h
index 4140b070f2e9..3cbce3b085e7 100644
--- a/arch/x86/xen/xen-ops.h
+++ b/arch/x86/xen/xen-ops.h
@@ -76,6 +76,7 @@ irqreturn_t xen_debug_interrupt(int irq, void *dev_id);
bool xen_vcpu_stolen(int vcpu);
+void xen_vcpu_setup(int cpu);
void xen_setup_vcpu_info_placement(void);
#ifdef CONFIG_SMP
diff --git a/drivers/acpi/scan.c b/drivers/acpi/scan.c
index 405056b95b05..ad9fc84a8601 100644
--- a/drivers/acpi/scan.c
+++ b/drivers/acpi/scan.c
@@ -46,6 +46,13 @@ DEFINE_MUTEX(acpi_device_lock);
LIST_HEAD(acpi_wakeup_device_list);
static DEFINE_MUTEX(acpi_hp_context_lock);
+/*
+ * The UART device described by the SPCR table is the only object which needs
+ * special-casing. Everything else is covered by ACPI namespace paths in STAO
+ * table.
+ */
+static u64 spcr_uart_addr;
+
struct acpi_dep_data {
struct list_head node;
acpi_handle master;
@@ -1458,6 +1465,41 @@ static int acpi_add_single_object(struct acpi_device **child,
return 0;
}
+static acpi_status acpi_get_resource_memory(struct acpi_resource *ares,
+ void *context)
+{
+ struct resource *res = context;
+
+ if (acpi_dev_resource_memory(ares, res))
+ return AE_CTRL_TERMINATE;
+
+ return AE_OK;
+}
+
+static bool acpi_device_should_be_hidden(acpi_handle handle)
+{
+ acpi_status status;
+ struct resource res;
+
+ /* Check if it should ignore the UART device */
+ if (!(spcr_uart_addr && acpi_has_method(handle, METHOD_NAME__CRS)))
+ return false;
+
+ /*
+ * The UART device described in SPCR table is assumed to have only one
+ * memory resource present. So we only look for the first one here.
+ */
+ status = acpi_walk_resources(handle, METHOD_NAME__CRS,
+ acpi_get_resource_memory, &res);
+ if (ACPI_FAILURE(status) || res.start != spcr_uart_addr)
+ return false;
+
+ acpi_handle_info(handle, "The UART device @%pa in SPCR table will be hidden\n",
+ &res.start);
+
+ return true;
+}
+
static int acpi_bus_type_and_status(acpi_handle handle, int *type,
unsigned long long *sta)
{
@@ -1471,6 +1513,9 @@ static int acpi_bus_type_and_status(acpi_handle handle, int *type,
switch (acpi_type) {
case ACPI_TYPE_ANY: /* for ACPI_ROOT_OBJECT */
case ACPI_TYPE_DEVICE:
+ if (acpi_device_should_be_hidden(handle))
+ return -ENODEV;
+
*type = ACPI_BUS_TYPE_DEVICE;
status = acpi_bus_get_status_handle(handle, sta);
if (ACPI_FAILURE(status))
@@ -1925,11 +1970,26 @@ static int acpi_bus_scan_fixed(void)
return result < 0 ? result : 0;
}
+static void __init acpi_get_spcr_uart_addr(void)
+{
+ acpi_status status;
+ struct acpi_table_spcr *spcr_ptr;
+
+ status = acpi_get_table(ACPI_SIG_SPCR, 0,
+ (struct acpi_table_header **)&spcr_ptr);
+ if (ACPI_SUCCESS(status))
+ spcr_uart_addr = spcr_ptr->serial_port.address;
+ else
+ printk(KERN_WARNING PREFIX "STAO table present, but SPCR is missing\n");
+}
+
static bool acpi_scan_initialized;
int __init acpi_scan_init(void)
{
int result;
+ acpi_status status;
+ struct acpi_table_stao *stao_ptr;
acpi_pci_root_init();
acpi_pci_link_init();
@@ -1945,6 +2005,20 @@ int __init acpi_scan_init(void)
acpi_scan_add_handler(&generic_device_handler);
+ /*
+ * If there is STAO table, check whether it needs to ignore the UART
+ * device in SPCR table.
+ */
+ status = acpi_get_table(ACPI_SIG_STAO, 0,
+ (struct acpi_table_header **)&stao_ptr);
+ if (ACPI_SUCCESS(status)) {
+ if (stao_ptr->header.length > sizeof(struct acpi_table_stao))
+ printk(KERN_INFO PREFIX "STAO Name List not yet supported.");
+
+ if (stao_ptr->ignore_uart)
+ acpi_get_spcr_uart_addr();
+ }
+
mutex_lock(&acpi_scan_lock);
/*
* Enumerate devices in the ACPI namespace.
diff --git a/drivers/block/xen-blkback/xenbus.c b/drivers/block/xen-blkback/xenbus.c
index 2994cfa44c8a..3cc6d1d86f1e 100644
--- a/drivers/block/xen-blkback/xenbus.c
+++ b/drivers/block/xen-blkback/xenbus.c
@@ -379,7 +379,7 @@ static struct attribute *xen_vbdstat_attrs[] = {
NULL
};
-static struct attribute_group xen_vbdstat_group = {
+static const struct attribute_group xen_vbdstat_group = {
.name = "statistics",
.attrs = xen_vbdstat_attrs,
};
@@ -715,8 +715,11 @@ static void backend_changed(struct xenbus_watch *watch,
/* Front end dir is a number, which is used as the handle. */
err = kstrtoul(strrchr(dev->otherend, '/') + 1, 0, &handle);
- if (err)
+ if (err) {
+ kfree(be->mode);
+ be->mode = NULL;
return;
+ }
be->major = major;
be->minor = minor;
@@ -1022,9 +1025,9 @@ static int connect_ring(struct backend_info *be)
pr_debug("%s %s\n", __func__, dev->otherend);
be->blkif->blk_protocol = BLKIF_PROTOCOL_DEFAULT;
- err = xenbus_gather(XBT_NIL, dev->otherend, "protocol",
- "%63s", protocol, NULL);
- if (err)
+ err = xenbus_scanf(XBT_NIL, dev->otherend, "protocol",
+ "%63s", protocol);
+ if (err <= 0)
strcpy(protocol, "unspecified, assuming default");
else if (0 == strcmp(protocol, XEN_IO_PROTO_ABI_NATIVE))
be->blkif->blk_protocol = BLKIF_PROTOCOL_NATIVE;
@@ -1036,10 +1039,9 @@ static int connect_ring(struct backend_info *be)
xenbus_dev_fatal(dev, err, "unknown fe protocol %s", protocol);
return -ENOSYS;
}
- err = xenbus_gather(XBT_NIL, dev->otherend,
- "feature-persistent", "%u",
- &pers_grants, NULL);
- if (err)
+ err = xenbus_scanf(XBT_NIL, dev->otherend,
+ "feature-persistent", "%u", &pers_grants);
+ if (err <= 0)
pers_grants = 0;
be->blkif->vbd.feature_gnt_persistent = pers_grants;
diff --git a/drivers/block/xen-blkfront.c b/drivers/block/xen-blkfront.c
index 0b6682a33e3b..be4fea6a5dd3 100644
--- a/drivers/block/xen-blkfront.c
+++ b/drivers/block/xen-blkfront.c
@@ -2197,10 +2197,9 @@ static void blkfront_setup_discard(struct blkfront_info *info)
info->discard_granularity = discard_granularity;
info->discard_alignment = discard_alignment;
}
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "discard-secure", "%d", &discard_secure,
- NULL);
- if (!err)
+ err = xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+ "discard-secure", "%u", &discard_secure);
+ if (err > 0)
info->feature_secdiscard = !!discard_secure;
}
@@ -2300,9 +2299,8 @@ static void blkfront_gather_backend_features(struct blkfront_info *info)
info->feature_flush = 0;
info->feature_fua = 0;
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-barrier", "%d", &barrier,
- NULL);
+ err = xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+ "feature-barrier", "%d", &barrier);
/*
* If there's no "feature-barrier" defined, then it means
@@ -2311,7 +2309,7 @@ static void blkfront_gather_backend_features(struct blkfront_info *info)
*
* If there are barriers, then we use flush.
*/
- if (!err && barrier) {
+ if (err > 0 && barrier) {
info->feature_flush = 1;
info->feature_fua = 1;
}
@@ -2320,34 +2318,31 @@ static void blkfront_gather_backend_features(struct blkfront_info *info)
* And if there is "feature-flush-cache" use that above
* barriers.
*/
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-flush-cache", "%d", &flush,
- NULL);
+ err = xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+ "feature-flush-cache", "%d", &flush);
- if (!err && flush) {
+ if (err > 0 && flush) {
info->feature_flush = 1;
info->feature_fua = 0;
}
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-discard", "%d", &discard,
- NULL);
+ err = xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+ "feature-discard", "%d", &discard);
- if (!err && discard)
+ if (err > 0 && discard)
blkfront_setup_discard(info);
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-persistent", "%u", &persistent,
- NULL);
- if (err)
+ err = xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+ "feature-persistent", "%d", &persistent);
+ if (err <= 0)
info->feature_persistent = 0;
else
info->feature_persistent = persistent;
- err = xenbus_gather(XBT_NIL, info->xbdev->otherend,
- "feature-max-indirect-segments", "%u", &indirect_segments,
- NULL);
- if (err)
+ err = xenbus_scanf(XBT_NIL, info->xbdev->otherend,
+ "feature-max-indirect-segments", "%u",
+ &indirect_segments);
+ if (err <= 0)
info->max_indirect_segments = 0;
else
info->max_indirect_segments = min(indirect_segments,
diff --git a/drivers/firmware/efi/arm-runtime.c b/drivers/firmware/efi/arm-runtime.c
index 17ccf0a8787a..c394b81fe452 100644
--- a/drivers/firmware/efi/arm-runtime.c
+++ b/drivers/firmware/efi/arm-runtime.c
@@ -107,6 +107,11 @@ static int __init arm_enable_runtime_services(void)
return 0;
}
+ if (efi_enabled(EFI_RUNTIME_SERVICES)) {
+ pr_info("EFI runtime services access via paravirt.\n");
+ return 0;
+ }
+
pr_info("Remapping and enabling EFI services.\n");
mapsize = efi.memmap.map_end - efi.memmap.map;
diff --git a/drivers/firmware/efi/efi.c b/drivers/firmware/efi/efi.c
index 8730fd475bf3..5a2631af7410 100644
--- a/drivers/firmware/efi/efi.c
+++ b/drivers/firmware/efi/efi.c
@@ -568,12 +568,14 @@ device_initcall(efi_load_efivars);
FIELD_SIZEOF(struct efi_fdt_params, field) \
}
-static __initdata struct {
+struct params {
const char name[32];
const char propname[32];
int offset;
int size;
-} dt_params[] = {
+};
+
+static __initdata struct params fdt_params[] = {
UEFI_PARAM("System Table", "linux,uefi-system-table", system_table),
UEFI_PARAM("MemMap Address", "linux,uefi-mmap-start", mmap),
UEFI_PARAM("MemMap Size", "linux,uefi-mmap-size", mmap_size),
@@ -581,44 +583,91 @@ static __initdata struct {
UEFI_PARAM("MemMap Desc. Version", "linux,uefi-mmap-desc-ver", desc_ver)
};
+static __initdata struct params xen_fdt_params[] = {
+ UEFI_PARAM("System Table", "xen,uefi-system-table", system_table),
+ UEFI_PARAM("MemMap Address", "xen,uefi-mmap-start", mmap),
+ UEFI_PARAM("MemMap Size", "xen,uefi-mmap-size", mmap_size),
+ UEFI_PARAM("MemMap Desc. Size", "xen,uefi-mmap-desc-size", desc_size),
+ UEFI_PARAM("MemMap Desc. Version", "xen,uefi-mmap-desc-ver", desc_ver)
+};
+
+#define EFI_FDT_PARAMS_SIZE ARRAY_SIZE(fdt_params)
+
+static __initdata struct {
+ const char *uname;
+ const char *subnode;
+ struct params *params;
+} dt_params[] = {
+ { "hypervisor", "uefi", xen_fdt_params },
+ { "chosen", NULL, fdt_params },
+};
+
struct param_info {
int found;
void *params;
+ const char *missing;
};
-static int __init fdt_find_uefi_params(unsigned long node, const char *uname,
- int depth, void *data)
+static int __init __find_uefi_params(unsigned long node,
+ struct param_info *info,
+ struct params *params)
{
- struct param_info *info = data;
const void *prop;
void *dest;
u64 val;
int i, len;
- if (depth != 1 || strcmp(uname, "chosen") != 0)
- return 0;
-
- for (i = 0; i < ARRAY_SIZE(dt_params); i++) {
- prop = of_get_flat_dt_prop(node, dt_params[i].propname, &len);
- if (!prop)
+ for (i = 0; i < EFI_FDT_PARAMS_SIZE; i++) {
+ prop = of_get_flat_dt_prop(node, params[i].propname, &len);
+ if (!prop) {
+ info->missing = params[i].name;
return 0;
- dest = info->params + dt_params[i].offset;
+ }
+
+ dest = info->params + params[i].offset;
info->found++;
val = of_read_number(prop, len / sizeof(u32));
- if (dt_params[i].size == sizeof(u32))
+ if (params[i].size == sizeof(u32))
*(u32 *)dest = val;
else
*(u64 *)dest = val;
if (efi_enabled(EFI_DBG))
- pr_info(" %s: 0x%0*llx\n", dt_params[i].name,
- dt_params[i].size * 2, val);
+ pr_info(" %s: 0x%0*llx\n", params[i].name,
+ params[i].size * 2, val);
}
+
return 1;
}
+static int __init fdt_find_uefi_params(unsigned long node, const char *uname,
+ int depth, void *data)
+{
+ struct param_info *info = data;
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(dt_params); i++) {
+ const char *subnode = dt_params[i].subnode;
+
+ if (depth != 1 || strcmp(uname, dt_params[i].uname) != 0) {
+ info->missing = dt_params[i].params[0].name;
+ continue;
+ }
+
+ if (subnode) {
+ node = of_get_flat_dt_subnode_by_name(node, subnode);
+ if (node < 0)
+ return 0;
+ }
+
+ return __find_uefi_params(node, info, dt_params[i].params);
+ }
+
+ return 0;
+}
+
int __init efi_get_fdt_params(struct efi_fdt_params *params)
{
struct param_info info;
@@ -634,7 +683,7 @@ int __init efi_get_fdt_params(struct efi_fdt_params *params)
pr_info("UEFI not found.\n");
else if (!ret)
pr_err("Can't find '%s' in device tree!\n",
- dt_params[info.found].name);
+ info.missing);
return ret;
}
diff --git a/drivers/of/fdt.c b/drivers/of/fdt.c
index 33daffc4392c..0e02947a8a7a 100644
--- a/drivers/of/fdt.c
+++ b/drivers/of/fdt.c
@@ -744,6 +744,19 @@ int __init of_scan_flat_dt(int (*it)(unsigned long node,
}
/**
+ * of_get_flat_dt_subnode_by_name - get the subnode by given name
+ *
+ * @node: the parent node
+ * @uname: the name of subnode
+ * @return offset of the subnode, or -FDT_ERR_NOTFOUND if there is none
+ */
+
+int of_get_flat_dt_subnode_by_name(unsigned long node, const char *uname)
+{
+ return fdt_subnode_offset(initial_boot_params, node, uname);
+}
+
+/**
* of_get_flat_dt_root - find the root node in the flat blob
*/
unsigned long __init of_get_flat_dt_root(void)
diff --git a/drivers/xen/Kconfig b/drivers/xen/Kconfig
index 979a8317204f..f15bb3b789d5 100644
--- a/drivers/xen/Kconfig
+++ b/drivers/xen/Kconfig
@@ -275,7 +275,7 @@ config XEN_HAVE_PVMMU
config XEN_EFI
def_bool y
- depends on X86_64 && EFI
+ depends on (ARM || ARM64 || X86_64) && EFI
config XEN_AUTO_XLATE
def_bool y
diff --git a/drivers/xen/Makefile b/drivers/xen/Makefile
index 030e91b38e32..8feab810aed9 100644
--- a/drivers/xen/Makefile
+++ b/drivers/xen/Makefile
@@ -10,6 +10,7 @@ CFLAGS_features.o := $(nostackp)
CFLAGS_efi.o += -fshort-wchar
LDFLAGS += $(call ld-option, --no-wchar-size-warning)
+dom0-$(CONFIG_ARM64) += arm-device.o
dom0-$(CONFIG_PCI) += pci.o
dom0-$(CONFIG_USB_SUPPORT) += dbgp.o
dom0-$(CONFIG_XEN_ACPI) += acpi.o $(xen-pad-y)
diff --git a/drivers/xen/arm-device.c b/drivers/xen/arm-device.c
new file mode 100644
index 000000000000..778acf80aacb
--- /dev/null
+++ b/drivers/xen/arm-device.c
@@ -0,0 +1,196 @@
+/*
+ * Copyright (c) 2015, Linaro Limited, Shannon Zhao
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/platform_device.h>
+#include <linux/acpi.h>
+#include <xen/xen.h>
+#include <xen/page.h>
+#include <xen/interface/memory.h>
+#include <asm/xen/hypervisor.h>
+#include <asm/xen/hypercall.h>
+
+static int xen_unmap_device_mmio(const struct resource *resources,
+ unsigned int count)
+{
+ unsigned int i, j, nr;
+ int rc = 0;
+ const struct resource *r;
+ struct xen_remove_from_physmap xrp;
+
+ for (i = 0; i < count; i++) {
+ r = &resources[i];
+ nr = DIV_ROUND_UP(resource_size(r), XEN_PAGE_SIZE);
+ if ((resource_type(r) != IORESOURCE_MEM) || (nr == 0))
+ continue;
+
+ for (j = 0; j < nr; j++) {
+ xrp.domid = DOMID_SELF;
+ xrp.gpfn = XEN_PFN_DOWN(r->start) + j;
+ rc = HYPERVISOR_memory_op(XENMEM_remove_from_physmap,
+ &xrp);
+ if (rc)
+ return rc;
+ }
+ }
+
+ return rc;
+}
+
+static int xen_map_device_mmio(const struct resource *resources,
+ unsigned int count)
+{
+ unsigned int i, j, nr;
+ int rc = 0;
+ const struct resource *r;
+ xen_pfn_t *gpfns;
+ xen_ulong_t *idxs;
+ int *errs;
+ struct xen_add_to_physmap_range xatp;
+
+ for (i = 0; i < count; i++) {
+ r = &resources[i];
+ nr = DIV_ROUND_UP(resource_size(r), XEN_PAGE_SIZE);
+ if ((resource_type(r) != IORESOURCE_MEM) || (nr == 0))
+ continue;
+
+ gpfns = kzalloc(sizeof(xen_pfn_t) * nr, GFP_KERNEL);
+ idxs = kzalloc(sizeof(xen_ulong_t) * nr, GFP_KERNEL);
+ errs = kzalloc(sizeof(int) * nr, GFP_KERNEL);
+ if (!gpfns || !idxs || !errs) {
+ kfree(gpfns);
+ kfree(idxs);
+ kfree(errs);
+ rc = -ENOMEM;
+ goto unmap;
+ }
+
+ for (j = 0; j < nr; j++) {
+ /*
+ * The regions are always mapped 1:1 to DOM0 and this is
+ * fine because the memory map for DOM0 is the same as
+ * the host (except for the RAM).
+ */
+ gpfns[j] = XEN_PFN_DOWN(r->start) + j;
+ idxs[j] = XEN_PFN_DOWN(r->start) + j;
+ }
+
+ xatp.domid = DOMID_SELF;
+ xatp.size = nr;
+ xatp.space = XENMAPSPACE_dev_mmio;
+
+ set_xen_guest_handle(xatp.gpfns, gpfns);
+ set_xen_guest_handle(xatp.idxs, idxs);
+ set_xen_guest_handle(xatp.errs, errs);
+
+ rc = HYPERVISOR_memory_op(XENMEM_add_to_physmap_range, &xatp);
+ kfree(gpfns);
+ kfree(idxs);
+ kfree(errs);
+ if (rc)
+ goto unmap;
+ }
+
+ return rc;
+
+unmap:
+ xen_unmap_device_mmio(resources, i);
+ return rc;
+}
+
+static int xen_platform_notifier(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct platform_device *pdev = to_platform_device(data);
+ int r = 0;
+
+ if (pdev->num_resources == 0 || pdev->resource == NULL)
+ return NOTIFY_OK;
+
+ switch (action) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ r = xen_map_device_mmio(pdev->resource, pdev->num_resources);
+ break;
+ case BUS_NOTIFY_DEL_DEVICE:
+ r = xen_unmap_device_mmio(pdev->resource, pdev->num_resources);
+ break;
+ default:
+ return NOTIFY_DONE;
+ }
+ if (r)
+ dev_err(&pdev->dev, "Platform: Failed to %s device %s MMIO!\n",
+ action == BUS_NOTIFY_ADD_DEVICE ? "map" :
+ (action == BUS_NOTIFY_DEL_DEVICE ? "unmap" : "?"),
+ pdev->name);
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block platform_device_nb = {
+ .notifier_call = xen_platform_notifier,
+};
+
+static int __init register_xen_platform_notifier(void)
+{
+ if (!xen_initial_domain() || acpi_disabled)
+ return 0;
+
+ return bus_register_notifier(&platform_bus_type, &platform_device_nb);
+}
+
+arch_initcall(register_xen_platform_notifier);
+
+#ifdef CONFIG_ARM_AMBA
+#include <linux/amba/bus.h>
+
+static int xen_amba_notifier(struct notifier_block *nb,
+ unsigned long action, void *data)
+{
+ struct amba_device *adev = to_amba_device(data);
+ int r = 0;
+
+ switch (action) {
+ case BUS_NOTIFY_ADD_DEVICE:
+ r = xen_map_device_mmio(&adev->res, 1);
+ break;
+ case BUS_NOTIFY_DEL_DEVICE:
+ r = xen_unmap_device_mmio(&adev->res, 1);
+ break;
+ default:
+ return NOTIFY_DONE;
+ }
+ if (r)
+ dev_err(&adev->dev, "AMBA: Failed to %s device %s MMIO!\n",
+ action == BUS_NOTIFY_ADD_DEVICE ? "map" :
+ (action == BUS_NOTIFY_DEL_DEVICE ? "unmap" : "?"),
+ adev->dev.init_name);
+
+ return NOTIFY_OK;
+}
+
+static struct notifier_block amba_device_nb = {
+ .notifier_call = xen_amba_notifier,
+};
+
+static int __init register_xen_amba_notifier(void)
+{
+ if (!xen_initial_domain() || acpi_disabled)
+ return 0;
+
+ return bus_register_notifier(&amba_bustype, &amba_device_nb);
+}
+
+arch_initcall(register_xen_amba_notifier);
+#endif
diff --git a/drivers/xen/efi.c b/drivers/xen/efi.c
index e9d2135445c1..22f71ffd3406 100644
--- a/drivers/xen/efi.c
+++ b/drivers/xen/efi.c
@@ -38,7 +38,7 @@
#define efi_data(op) (op.u.efi_runtime_call)
-static efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
+efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
{
struct xen_platform_op op = INIT_EFI_OP(get_time);
@@ -59,8 +59,9 @@ static efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc)
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_get_time);
-static efi_status_t xen_efi_set_time(efi_time_t *tm)
+efi_status_t xen_efi_set_time(efi_time_t *tm)
{
struct xen_platform_op op = INIT_EFI_OP(set_time);
@@ -72,10 +73,10 @@ static efi_status_t xen_efi_set_time(efi_time_t *tm)
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_set_time);
-static efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled,
- efi_bool_t *pending,
- efi_time_t *tm)
+efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
+ efi_time_t *tm)
{
struct xen_platform_op op = INIT_EFI_OP(get_wakeup_time);
@@ -95,8 +96,9 @@ static efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled,
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_get_wakeup_time);
-static efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
+efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
{
struct xen_platform_op op = INIT_EFI_OP(set_wakeup_time);
@@ -113,12 +115,11 @@ static efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm)
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_set_wakeup_time);
-static efi_status_t xen_efi_get_variable(efi_char16_t *name,
- efi_guid_t *vendor,
- u32 *attr,
- unsigned long *data_size,
- void *data)
+efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
+ u32 *attr, unsigned long *data_size,
+ void *data)
{
struct xen_platform_op op = INIT_EFI_OP(get_variable);
@@ -138,10 +139,11 @@ static efi_status_t xen_efi_get_variable(efi_char16_t *name,
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_get_variable);
-static efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
- efi_char16_t *name,
- efi_guid_t *vendor)
+efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
+ efi_char16_t *name,
+ efi_guid_t *vendor)
{
struct xen_platform_op op = INIT_EFI_OP(get_next_variable_name);
@@ -161,12 +163,11 @@ static efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_get_next_variable);
-static efi_status_t xen_efi_set_variable(efi_char16_t *name,
- efi_guid_t *vendor,
- u32 attr,
- unsigned long data_size,
- void *data)
+efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
+ u32 attr, unsigned long data_size,
+ void *data)
{
struct xen_platform_op op = INIT_EFI_OP(set_variable);
@@ -183,11 +184,11 @@ static efi_status_t xen_efi_set_variable(efi_char16_t *name,
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_set_variable);
-static efi_status_t xen_efi_query_variable_info(u32 attr,
- u64 *storage_space,
- u64 *remaining_space,
- u64 *max_variable_size)
+efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
+ u64 *remaining_space,
+ u64 *max_variable_size)
{
struct xen_platform_op op = INIT_EFI_OP(query_variable_info);
@@ -205,8 +206,9 @@ static efi_status_t xen_efi_query_variable_info(u32 attr,
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_query_variable_info);
-static efi_status_t xen_efi_get_next_high_mono_count(u32 *count)
+efi_status_t xen_efi_get_next_high_mono_count(u32 *count)
{
struct xen_platform_op op = INIT_EFI_OP(get_next_high_monotonic_count);
@@ -217,10 +219,10 @@ static efi_status_t xen_efi_get_next_high_mono_count(u32 *count)
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_get_next_high_mono_count);
-static efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
- unsigned long count,
- unsigned long sg_list)
+efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
+ unsigned long count, unsigned long sg_list)
{
struct xen_platform_op op = INIT_EFI_OP(update_capsule);
@@ -237,11 +239,11 @@ static efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
return efi_data(op).status;
}
+EXPORT_SYMBOL_GPL(xen_efi_update_capsule);
-static efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
- unsigned long count,
- u64 *max_size,
- int *reset_type)
+efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
+ unsigned long count, u64 *max_size,
+ int *reset_type)
{
struct xen_platform_op op = INIT_EFI_OP(query_capsule_capabilities);
@@ -260,111 +262,4 @@ static efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
return efi_data(op).status;
}
-
-static efi_char16_t vendor[100] __initdata;
-
-static efi_system_table_t efi_systab_xen __initdata = {
- .hdr = {
- .signature = EFI_SYSTEM_TABLE_SIGNATURE,
- .revision = 0, /* Initialized later. */
- .headersize = 0, /* Ignored by Linux Kernel. */
- .crc32 = 0, /* Ignored by Linux Kernel. */
- .reserved = 0
- },
- .fw_vendor = EFI_INVALID_TABLE_ADDR, /* Initialized later. */
- .fw_revision = 0, /* Initialized later. */
- .con_in_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
- .con_in = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
- .con_out_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
- .con_out = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
- .stderr_handle = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
- .stderr = EFI_INVALID_TABLE_ADDR, /* Not used under Xen. */
- .runtime = (efi_runtime_services_t *)EFI_INVALID_TABLE_ADDR,
- /* Not used under Xen. */
- .boottime = (efi_boot_services_t *)EFI_INVALID_TABLE_ADDR,
- /* Not used under Xen. */
- .nr_tables = 0, /* Initialized later. */
- .tables = EFI_INVALID_TABLE_ADDR /* Initialized later. */
-};
-
-static const struct efi efi_xen __initconst = {
- .systab = NULL, /* Initialized later. */
- .runtime_version = 0, /* Initialized later. */
- .mps = EFI_INVALID_TABLE_ADDR,
- .acpi = EFI_INVALID_TABLE_ADDR,
- .acpi20 = EFI_INVALID_TABLE_ADDR,
- .smbios = EFI_INVALID_TABLE_ADDR,
- .smbios3 = EFI_INVALID_TABLE_ADDR,
- .sal_systab = EFI_INVALID_TABLE_ADDR,
- .boot_info = EFI_INVALID_TABLE_ADDR,
- .hcdp = EFI_INVALID_TABLE_ADDR,
- .uga = EFI_INVALID_TABLE_ADDR,
- .uv_systab = EFI_INVALID_TABLE_ADDR,
- .fw_vendor = EFI_INVALID_TABLE_ADDR,
- .runtime = EFI_INVALID_TABLE_ADDR,
- .config_table = EFI_INVALID_TABLE_ADDR,
- .get_time = xen_efi_get_time,
- .set_time = xen_efi_set_time,
- .get_wakeup_time = xen_efi_get_wakeup_time,
- .set_wakeup_time = xen_efi_set_wakeup_time,
- .get_variable = xen_efi_get_variable,
- .get_next_variable = xen_efi_get_next_variable,
- .set_variable = xen_efi_set_variable,
- .query_variable_info = xen_efi_query_variable_info,
- .update_capsule = xen_efi_update_capsule,
- .query_capsule_caps = xen_efi_query_capsule_caps,
- .get_next_high_mono_count = xen_efi_get_next_high_mono_count,
- .reset_system = NULL, /* Functionality provided by Xen. */
- .set_virtual_address_map = NULL, /* Not used under Xen. */
- .flags = 0 /* Initialized later. */
-};
-
-efi_system_table_t __init *xen_efi_probe(void)
-{
- struct xen_platform_op op = {
- .cmd = XENPF_firmware_info,
- .u.firmware_info = {
- .type = XEN_FW_EFI_INFO,
- .index = XEN_FW_EFI_CONFIG_TABLE
- }
- };
- union xenpf_efi_info *info = &op.u.firmware_info.u.efi_info;
-
- if (!xen_initial_domain() || HYPERVISOR_platform_op(&op) < 0)
- return NULL;
-
- /* Here we know that Xen runs on EFI platform. */
-
- efi = efi_xen;
-
- efi_systab_xen.tables = info->cfg.addr;
- efi_systab_xen.nr_tables = info->cfg.nent;
-
- op.cmd = XENPF_firmware_info;
- op.u.firmware_info.type = XEN_FW_EFI_INFO;
- op.u.firmware_info.index = XEN_FW_EFI_VENDOR;
- info->vendor.bufsz = sizeof(vendor);
- set_xen_guest_handle(info->vendor.name, vendor);
-
- if (HYPERVISOR_platform_op(&op) == 0) {
- efi_systab_xen.fw_vendor = __pa_symbol(vendor);
- efi_systab_xen.fw_revision = info->vendor.revision;
- } else
- efi_systab_xen.fw_vendor = __pa_symbol(L"UNKNOWN");
-
- op.cmd = XENPF_firmware_info;
- op.u.firmware_info.type = XEN_FW_EFI_INFO;
- op.u.firmware_info.index = XEN_FW_EFI_VERSION;
-
- if (HYPERVISOR_platform_op(&op) == 0)
- efi_systab_xen.hdr.revision = info->version;
-
- op.cmd = XENPF_firmware_info;
- op.u.firmware_info.type = XEN_FW_EFI_INFO;
- op.u.firmware_info.index = XEN_FW_EFI_RT_VERSION;
-
- if (HYPERVISOR_platform_op(&op) == 0)
- efi.runtime_version = info->version;
-
- return &efi_systab_xen;
-}
+EXPORT_SYMBOL_GPL(xen_efi_query_capsule_caps);
diff --git a/drivers/xen/events/events_base.c b/drivers/xen/events/events_base.c
index 71d49a95f8c0..d5dbdb9d24d8 100644
--- a/drivers/xen/events/events_base.c
+++ b/drivers/xen/events/events_base.c
@@ -895,7 +895,7 @@ static int bind_ipi_to_irq(unsigned int ipi, unsigned int cpu)
irq_set_chip_and_handler_name(irq, &xen_percpu_chip,
handle_percpu_irq, "ipi");
- bind_ipi.vcpu = cpu;
+ bind_ipi.vcpu = xen_vcpu_nr(cpu);
if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_ipi,
&bind_ipi) != 0)
BUG();
@@ -991,7 +991,7 @@ int bind_virq_to_irq(unsigned int virq, unsigned int cpu, bool percpu)
handle_edge_irq, "virq");
bind_virq.virq = virq;
- bind_virq.vcpu = cpu;
+ bind_virq.vcpu = xen_vcpu_nr(cpu);
ret = HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq,
&bind_virq);
if (ret == 0)
@@ -1211,7 +1211,8 @@ void xen_send_IPI_one(unsigned int cpu, enum ipi_vector vector)
#ifdef CONFIG_X86
if (unlikely(vector == XEN_NMI_VECTOR)) {
- int rc = HYPERVISOR_vcpu_op(VCPUOP_send_nmi, cpu, NULL);
+ int rc = HYPERVISOR_vcpu_op(VCPUOP_send_nmi, xen_vcpu_nr(cpu),
+ NULL);
if (rc < 0)
printk(KERN_WARNING "Sending nmi to CPU%d failed (rc:%d)\n", cpu, rc);
return;
@@ -1318,7 +1319,7 @@ static int rebind_irq_to_cpu(unsigned irq, unsigned tcpu)
/* Send future instances of this interrupt to other vcpu. */
bind_vcpu.port = evtchn;
- bind_vcpu.vcpu = tcpu;
+ bind_vcpu.vcpu = xen_vcpu_nr(tcpu);
/*
* Mask the event while changing the VCPU binding to prevent
@@ -1458,7 +1459,7 @@ static void restore_cpu_virqs(unsigned int cpu)
/* Get a new binding from Xen. */
bind_virq.virq = virq;
- bind_virq.vcpu = cpu;
+ bind_virq.vcpu = xen_vcpu_nr(cpu);
if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq,
&bind_virq) != 0)
BUG();
@@ -1482,7 +1483,7 @@ static void restore_cpu_ipis(unsigned int cpu)
BUG_ON(ipi_from_irq(irq) != ipi);
/* Get a new binding from Xen. */
- bind_ipi.vcpu = cpu;
+ bind_ipi.vcpu = xen_vcpu_nr(cpu);
if (HYPERVISOR_event_channel_op(EVTCHNOP_bind_ipi,
&bind_ipi) != 0)
BUG();
diff --git a/drivers/xen/events/events_fifo.c b/drivers/xen/events/events_fifo.c
index 9289a17712e2..266c2c733039 100644
--- a/drivers/xen/events/events_fifo.c
+++ b/drivers/xen/events/events_fifo.c
@@ -113,7 +113,7 @@ static int init_control_block(int cpu,
init_control.control_gfn = virt_to_gfn(control_block);
init_control.offset = 0;
- init_control.vcpu = cpu;
+ init_control.vcpu = xen_vcpu_nr(cpu);
return HYPERVISOR_event_channel_op(EVTCHNOP_init_control, &init_control);
}
diff --git a/drivers/xen/evtchn.c b/drivers/xen/evtchn.c
index f4edd6df3df2..e8c7f09d01be 100644
--- a/drivers/xen/evtchn.c
+++ b/drivers/xen/evtchn.c
@@ -55,6 +55,7 @@
#include <xen/xen.h>
#include <xen/events.h>
#include <xen/evtchn.h>
+#include <xen/xen-ops.h>
#include <asm/xen/hypervisor.h>
struct per_user_data {
@@ -73,8 +74,12 @@ struct per_user_data {
wait_queue_head_t evtchn_wait;
struct fasync_struct *evtchn_async_queue;
const char *name;
+
+ domid_t restrict_domid;
};
+#define UNRESTRICTED_DOMID ((domid_t)-1)
+
struct user_evtchn {
struct rb_node node;
struct per_user_data *user;
@@ -443,12 +448,16 @@ static long evtchn_ioctl(struct file *file,
struct ioctl_evtchn_bind_virq bind;
struct evtchn_bind_virq bind_virq;
+ rc = -EACCES;
+ if (u->restrict_domid != UNRESTRICTED_DOMID)
+ break;
+
rc = -EFAULT;
if (copy_from_user(&bind, uarg, sizeof(bind)))
break;
bind_virq.virq = bind.virq;
- bind_virq.vcpu = 0;
+ bind_virq.vcpu = xen_vcpu_nr(0);
rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_virq,
&bind_virq);
if (rc != 0)
@@ -468,6 +477,11 @@ static long evtchn_ioctl(struct file *file,
if (copy_from_user(&bind, uarg, sizeof(bind)))
break;
+ rc = -EACCES;
+ if (u->restrict_domid != UNRESTRICTED_DOMID &&
+ u->restrict_domid != bind.remote_domain)
+ break;
+
bind_interdomain.remote_dom = bind.remote_domain;
bind_interdomain.remote_port = bind.remote_port;
rc = HYPERVISOR_event_channel_op(EVTCHNOP_bind_interdomain,
@@ -485,6 +499,10 @@ static long evtchn_ioctl(struct file *file,
struct ioctl_evtchn_bind_unbound_port bind;
struct evtchn_alloc_unbound alloc_unbound;
+ rc = -EACCES;
+ if (u->restrict_domid != UNRESTRICTED_DOMID)
+ break;
+
rc = -EFAULT;
if (copy_from_user(&bind, uarg, sizeof(bind)))
break;
@@ -553,6 +571,27 @@ static long evtchn_ioctl(struct file *file,
break;
}
+ case IOCTL_EVTCHN_RESTRICT_DOMID: {
+ struct ioctl_evtchn_restrict_domid ierd;
+
+ rc = -EACCES;
+ if (u->restrict_domid != UNRESTRICTED_DOMID)
+ break;
+
+ rc = -EFAULT;
+ if (copy_from_user(&ierd, uarg, sizeof(ierd)))
+ break;
+
+ rc = -EINVAL;
+ if (ierd.domid == 0 || ierd.domid >= DOMID_FIRST_RESERVED)
+ break;
+
+ u->restrict_domid = ierd.domid;
+ rc = 0;
+
+ break;
+ }
+
default:
rc = -ENOSYS;
break;
@@ -601,6 +640,8 @@ static int evtchn_open(struct inode *inode, struct file *filp)
mutex_init(&u->ring_cons_mutex);
spin_lock_init(&u->ring_prod_lock);
+ u->restrict_domid = UNRESTRICTED_DOMID;
+
filp->private_data = u;
return nonseekable_open(inode, filp);
diff --git a/drivers/xen/gntalloc.c b/drivers/xen/gntalloc.c
index 4547a91bca67..7a47c4c9fb1b 100644
--- a/drivers/xen/gntalloc.c
+++ b/drivers/xen/gntalloc.c
@@ -504,7 +504,7 @@ static int gntalloc_mmap(struct file *filp, struct vm_area_struct *vma)
struct gntalloc_file_private_data *priv = filp->private_data;
struct gntalloc_vma_private_data *vm_priv;
struct gntalloc_gref *gref;
- int count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ int count = vma_pages(vma);
int rv, i;
if (!(vma->vm_flags & VM_SHARED)) {
diff --git a/drivers/xen/gntdev.c b/drivers/xen/gntdev.c
index 67939578cd6d..bb952121ea94 100644
--- a/drivers/xen/gntdev.c
+++ b/drivers/xen/gntdev.c
@@ -982,7 +982,7 @@ static int gntdev_mmap(struct file *flip, struct vm_area_struct *vma)
{
struct gntdev_priv *priv = flip->private_data;
int index = vma->vm_pgoff;
- int count = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ int count = vma_pages(vma);
struct grant_map *map;
int i, err = -EINVAL;
diff --git a/drivers/xen/privcmd.c b/drivers/xen/privcmd.c
index df2e6f783318..702040fe2001 100644
--- a/drivers/xen/privcmd.c
+++ b/drivers/xen/privcmd.c
@@ -582,7 +582,7 @@ static long privcmd_ioctl(struct file *file,
static void privcmd_close(struct vm_area_struct *vma)
{
struct page **pages = vma->vm_private_data;
- int numpgs = (vma->vm_end - vma->vm_start) >> PAGE_SHIFT;
+ int numpgs = vma_pages(vma);
int numgfns = (vma->vm_end - vma->vm_start) >> XEN_PAGE_SHIFT;
int rc;
diff --git a/drivers/xen/time.c b/drivers/xen/time.c
index 71078425c9ea..ac5f23fcafc2 100644
--- a/drivers/xen/time.c
+++ b/drivers/xen/time.c
@@ -6,6 +6,7 @@
#include <linux/math64.h>
#include <linux/gfp.h>
+#include <asm/paravirt.h>
#include <asm/xen/hypervisor.h>
#include <asm/xen/hypercall.h>
@@ -46,27 +47,31 @@ static u64 get64(const u64 *p)
return ret;
}
-/*
- * Runstate accounting
- */
-void xen_get_runstate_snapshot(struct vcpu_runstate_info *res)
+static void xen_get_runstate_snapshot_cpu(struct vcpu_runstate_info *res,
+ unsigned int cpu)
{
u64 state_time;
struct vcpu_runstate_info *state;
BUG_ON(preemptible());
- state = this_cpu_ptr(&xen_runstate);
+ state = per_cpu_ptr(&xen_runstate, cpu);
- /*
- * The runstate info is always updated by the hypervisor on
- * the current CPU, so there's no need to use anything
- * stronger than a compiler barrier when fetching it.
- */
do {
state_time = get64(&state->state_entry_time);
+ rmb(); /* Hypervisor might update data. */
*res = READ_ONCE(*state);
- } while (get64(&state->state_entry_time) != state_time);
+ rmb(); /* Hypervisor might update data. */
+ } while (get64(&state->state_entry_time) != state_time ||
+ (state_time & XEN_RUNSTATE_UPDATE));
+}
+
+/*
+ * Runstate accounting
+ */
+void xen_get_runstate_snapshot(struct vcpu_runstate_info *res)
+{
+ xen_get_runstate_snapshot_cpu(res, smp_processor_id());
}
/* return true when a vcpu could run but has no real cpu to run on */
@@ -75,6 +80,14 @@ bool xen_vcpu_stolen(int vcpu)
return per_cpu(xen_runstate, vcpu).state == RUNSTATE_runnable;
}
+u64 xen_steal_clock(int cpu)
+{
+ struct vcpu_runstate_info state;
+
+ xen_get_runstate_snapshot_cpu(&state, cpu);
+ return state.time[RUNSTATE_runnable] + state.time[RUNSTATE_offline];
+}
+
void xen_setup_runstate_info(int cpu)
{
struct vcpu_register_runstate_memory_area area;
@@ -82,7 +95,20 @@ void xen_setup_runstate_info(int cpu)
area.addr.v = &per_cpu(xen_runstate, cpu);
if (HYPERVISOR_vcpu_op(VCPUOP_register_runstate_memory_area,
- cpu, &area))
+ xen_vcpu_nr(cpu), &area))
BUG();
}
+void __init xen_time_setup_guest(void)
+{
+ bool xen_runstate_remote;
+
+ xen_runstate_remote = !HYPERVISOR_vm_assist(VMASST_CMD_enable,
+ VMASST_TYPE_runstate_update_flag);
+
+ pv_time_ops.steal_clock = xen_steal_clock;
+
+ static_key_slow_inc(&paravirt_steal_enabled);
+ if (xen_runstate_remote)
+ static_key_slow_inc(&paravirt_steal_rq_enabled);
+}
diff --git a/drivers/xen/xen-pciback/conf_space.c b/drivers/xen/xen-pciback/conf_space.c
index 6a25533da237..9e9286d0872e 100644
--- a/drivers/xen/xen-pciback/conf_space.c
+++ b/drivers/xen/xen-pciback/conf_space.c
@@ -148,7 +148,7 @@ int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size,
struct xen_pcibk_dev_data *dev_data = pci_get_drvdata(dev);
const struct config_field_entry *cfg_entry;
const struct config_field *field;
- int req_start, req_end, field_start, field_end;
+ int field_start, field_end;
/* if read fails for any reason, return 0
* (as if device didn't respond) */
u32 value = 0, tmp_val;
@@ -178,12 +178,10 @@ int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size,
list_for_each_entry(cfg_entry, &dev_data->config_fields, list) {
field = cfg_entry->field;
- req_start = offset;
- req_end = offset + size;
field_start = OFFSET(cfg_entry);
field_end = OFFSET(cfg_entry) + field->size;
- if (req_end > field_start && field_end > req_start) {
+ if (offset + size > field_start && field_end > offset) {
err = conf_space_read(dev, cfg_entry, field_start,
&tmp_val);
if (err)
@@ -191,7 +189,7 @@ int xen_pcibk_config_read(struct pci_dev *dev, int offset, int size,
value = merge_value(value, tmp_val,
get_mask(field->size),
- field_start - req_start);
+ field_start - offset);
}
}
@@ -211,7 +209,7 @@ int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size, u32 value)
const struct config_field_entry *cfg_entry;
const struct config_field *field;
u32 tmp_val;
- int req_start, req_end, field_start, field_end;
+ int field_start, field_end;
if (unlikely(verbose_request))
printk(KERN_DEBUG
@@ -224,21 +222,17 @@ int xen_pcibk_config_write(struct pci_dev *dev, int offset, int size, u32 value)
list_for_each_entry(cfg_entry, &dev_data->config_fields, list) {
field = cfg_entry->field;
- req_start = offset;
- req_end = offset + size;
field_start = OFFSET(cfg_entry);
field_end = OFFSET(cfg_entry) + field->size;
- if (req_end > field_start && field_end > req_start) {
- tmp_val = 0;
-
- err = xen_pcibk_config_read(dev, field_start,
- field->size, &tmp_val);
+ if (offset + size > field_start && field_end > offset) {
+ err = conf_space_read(dev, cfg_entry, field_start,
+ &tmp_val);
if (err)
break;
tmp_val = merge_value(tmp_val, value, get_mask(size),
- req_start - field_start);
+ offset - field_start);
err = conf_space_write(dev, cfg_entry, field_start,
tmp_val);
diff --git a/drivers/xen/xen-pciback/conf_space_header.c b/drivers/xen/xen-pciback/conf_space_header.c
index 9ead1c2ff1dd..5fbfd9cfb6d6 100644
--- a/drivers/xen/xen-pciback/conf_space_header.c
+++ b/drivers/xen/xen-pciback/conf_space_header.c
@@ -209,58 +209,35 @@ static int bar_read(struct pci_dev *dev, int offset, u32 * value, void *data)
return 0;
}
-static inline void read_dev_bar(struct pci_dev *dev,
- struct pci_bar_info *bar_info, int offset,
- u32 len_mask)
+static void *bar_init(struct pci_dev *dev, int offset)
{
- int pos;
- struct resource *res = dev->resource;
+ unsigned int pos;
+ const struct resource *res = dev->resource;
+ struct pci_bar_info *bar = kzalloc(sizeof(*bar), GFP_KERNEL);
+
+ if (!bar)
+ return ERR_PTR(-ENOMEM);
if (offset == PCI_ROM_ADDRESS || offset == PCI_ROM_ADDRESS1)
pos = PCI_ROM_RESOURCE;
else {
pos = (offset - PCI_BASE_ADDRESS_0) / 4;
- if (pos && ((res[pos - 1].flags & (PCI_BASE_ADDRESS_SPACE |
- PCI_BASE_ADDRESS_MEM_TYPE_MASK)) ==
- (PCI_BASE_ADDRESS_SPACE_MEMORY |
- PCI_BASE_ADDRESS_MEM_TYPE_64))) {
- bar_info->val = res[pos - 1].start >> 32;
- bar_info->len_val = -resource_size(&res[pos - 1]) >> 32;
- return;
+ if (pos && (res[pos - 1].flags & IORESOURCE_MEM_64)) {
+ bar->val = res[pos - 1].start >> 32;
+ bar->len_val = -resource_size(&res[pos - 1]) >> 32;
+ return bar;
}
}
if (!res[pos].flags ||
(res[pos].flags & (IORESOURCE_DISABLED | IORESOURCE_UNSET |
IORESOURCE_BUSY)))
- return;
-
- bar_info->val = res[pos].start |
- (res[pos].flags & PCI_REGION_FLAG_MASK);
- bar_info->len_val = -resource_size(&res[pos]) |
- (res[pos].flags & PCI_REGION_FLAG_MASK);
-}
+ return bar;
-static void *bar_init(struct pci_dev *dev, int offset)
-{
- struct pci_bar_info *bar = kzalloc(sizeof(*bar), GFP_KERNEL);
-
- if (!bar)
- return ERR_PTR(-ENOMEM);
-
- read_dev_bar(dev, bar, offset, ~0);
-
- return bar;
-}
-
-static void *rom_init(struct pci_dev *dev, int offset)
-{
- struct pci_bar_info *bar = kzalloc(sizeof(*bar), GFP_KERNEL);
-
- if (!bar)
- return ERR_PTR(-ENOMEM);
-
- read_dev_bar(dev, bar, offset, ~PCI_ROM_ADDRESS_ENABLE);
+ bar->val = res[pos].start |
+ (res[pos].flags & PCI_REGION_FLAG_MASK);
+ bar->len_val = -resource_size(&res[pos]) |
+ (res[pos].flags & PCI_REGION_FLAG_MASK);
return bar;
}
@@ -383,7 +360,7 @@ static const struct config_field header_common[] = {
{ \
.offset = reg_offset, \
.size = 4, \
- .init = rom_init, \
+ .init = bar_init, \
.reset = bar_reset, \
.release = bar_release, \
.u.dw.read = bar_read, \
diff --git a/drivers/xen/xen-pciback/pciback.h b/drivers/xen/xen-pciback/pciback.h
index 4d529f3e40df..7af369b6aaa2 100644
--- a/drivers/xen/xen-pciback/pciback.h
+++ b/drivers/xen/xen-pciback/pciback.h
@@ -55,7 +55,6 @@ struct xen_pcibk_dev_data {
/* Used by XenBus and xen_pcibk_ops.c */
extern wait_queue_head_t xen_pcibk_aer_wait_queue;
-extern struct workqueue_struct *xen_pcibk_wq;
/* Used by pcistub.c and conf_space_quirks.c */
extern struct list_head xen_pcibk_quirks;
diff --git a/drivers/xen/xen-pciback/pciback_ops.c b/drivers/xen/xen-pciback/pciback_ops.c
index 2f19dd7553e6..f8c77751f330 100644
--- a/drivers/xen/xen-pciback/pciback_ops.c
+++ b/drivers/xen/xen-pciback/pciback_ops.c
@@ -310,7 +310,7 @@ void xen_pcibk_test_and_schedule_op(struct xen_pcibk_device *pdev)
* already processing a request */
if (test_bit(_XEN_PCIF_active, (unsigned long *)&pdev->sh_info->flags)
&& !test_and_set_bit(_PDEVF_op_active, &pdev->flags)) {
- queue_work(xen_pcibk_wq, &pdev->op_work);
+ schedule_work(&pdev->op_work);
}
/*_XEN_PCIB_active should have been cleared by pcifront. And also make
sure xen_pcibk is waiting for ack by checking _PCIB_op_pending*/
diff --git a/drivers/xen/xen-pciback/xenbus.c b/drivers/xen/xen-pciback/xenbus.c
index c252eb3f0176..5ce878c51d03 100644
--- a/drivers/xen/xen-pciback/xenbus.c
+++ b/drivers/xen/xen-pciback/xenbus.c
@@ -17,7 +17,6 @@
#include "pciback.h"
#define INVALID_EVTCHN_IRQ (-1)
-struct workqueue_struct *xen_pcibk_wq;
static bool __read_mostly passthrough;
module_param(passthrough, bool, S_IRUGO);
@@ -76,8 +75,7 @@ static void xen_pcibk_disconnect(struct xen_pcibk_device *pdev)
/* If the driver domain started an op, make sure we complete it
* before releasing the shared memory */
- /* Note, the workqueue does not use spinlocks at all.*/
- flush_workqueue(xen_pcibk_wq);
+ flush_work(&pdev->op_work);
if (pdev->sh_info != NULL) {
xenbus_unmap_ring_vfree(pdev->xdev, pdev->sh_info);
@@ -733,11 +731,6 @@ const struct xen_pcibk_backend *__read_mostly xen_pcibk_backend;
int __init xen_pcibk_xenbus_register(void)
{
- xen_pcibk_wq = create_workqueue("xen_pciback_workqueue");
- if (!xen_pcibk_wq) {
- pr_err("%s: create xen_pciback_workqueue failed\n", __func__);
- return -EFAULT;
- }
xen_pcibk_backend = &xen_pcibk_vpci_backend;
if (passthrough)
xen_pcibk_backend = &xen_pcibk_passthrough_backend;
@@ -747,6 +740,5 @@ int __init xen_pcibk_xenbus_register(void)
void __exit xen_pcibk_xenbus_unregister(void)
{
- destroy_workqueue(xen_pcibk_wq);
xenbus_unregister_driver(&xen_pcibk_driver);
}
diff --git a/drivers/xen/xenbus/xenbus_probe_frontend.c b/drivers/xen/xenbus/xenbus_probe_frontend.c
index bcb53bdc469c..611a23119675 100644
--- a/drivers/xen/xenbus/xenbus_probe_frontend.c
+++ b/drivers/xen/xenbus/xenbus_probe_frontend.c
@@ -31,7 +31,6 @@
#include "xenbus_probe.h"
-static struct workqueue_struct *xenbus_frontend_wq;
/* device/<type>/<id> => <type>-<id> */
static int frontend_bus_id(char bus_id[XEN_BUS_ID_SIZE], const char *nodename)
@@ -109,13 +108,7 @@ static int xenbus_frontend_dev_resume(struct device *dev)
if (xen_store_domain_type == XS_LOCAL) {
struct xenbus_device *xdev = to_xenbus_device(dev);
- if (!xenbus_frontend_wq) {
- pr_err("%s: no workqueue to process delayed resume\n",
- xdev->nodename);
- return -EFAULT;
- }
-
- queue_work(xenbus_frontend_wq, &xdev->work);
+ schedule_work(&xdev->work);
return 0;
}
@@ -485,12 +478,6 @@ static int __init xenbus_probe_frontend_init(void)
register_xenstore_notifier(&xenstore_notifier);
- if (xen_store_domain_type == XS_LOCAL) {
- xenbus_frontend_wq = create_workqueue("xenbus_frontend");
- if (!xenbus_frontend_wq)
- pr_warn("create xenbus frontend workqueue failed, S3 resume is likely to fail\n");
- }
-
return 0;
}
subsys_initcall(xenbus_probe_frontend_init);
diff --git a/drivers/xen/xlate_mmu.c b/drivers/xen/xlate_mmu.c
index 5063c5e796b7..23f1387b3ef7 100644
--- a/drivers/xen/xlate_mmu.c
+++ b/drivers/xen/xlate_mmu.c
@@ -29,6 +29,8 @@
*/
#include <linux/kernel.h>
#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
#include <asm/xen/hypercall.h>
#include <asm/xen/hypervisor.h>
@@ -37,6 +39,7 @@
#include <xen/page.h>
#include <xen/interface/xen.h>
#include <xen/interface/memory.h>
+#include <xen/balloon.h>
typedef void (*xen_gfn_fn_t)(unsigned long gfn, void *data);
@@ -185,3 +188,77 @@ int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
return 0;
}
EXPORT_SYMBOL_GPL(xen_xlate_unmap_gfn_range);
+
+struct map_balloon_pages {
+ xen_pfn_t *pfns;
+ unsigned int idx;
+};
+
+static void setup_balloon_gfn(unsigned long gfn, void *data)
+{
+ struct map_balloon_pages *info = data;
+
+ info->pfns[info->idx++] = gfn;
+}
+
+/**
+ * xen_xlate_map_ballooned_pages - map a new set of ballooned pages
+ * @gfns: returns the array of corresponding GFNs
+ * @virt: returns the virtual address of the mapped region
+ * @nr_grant_frames: number of GFNs
+ * @return 0 on success, error otherwise
+ *
+ * This allocates a set of ballooned pages and maps them into the
+ * kernel's address space.
+ */
+int __init xen_xlate_map_ballooned_pages(xen_pfn_t **gfns, void **virt,
+ unsigned long nr_grant_frames)
+{
+ struct page **pages;
+ xen_pfn_t *pfns;
+ void *vaddr;
+ struct map_balloon_pages data;
+ int rc;
+ unsigned long nr_pages;
+
+ BUG_ON(nr_grant_frames == 0);
+ nr_pages = DIV_ROUND_UP(nr_grant_frames, XEN_PFN_PER_PAGE);
+ pages = kcalloc(nr_pages, sizeof(pages[0]), GFP_KERNEL);
+ if (!pages)
+ return -ENOMEM;
+
+ pfns = kcalloc(nr_grant_frames, sizeof(pfns[0]), GFP_KERNEL);
+ if (!pfns) {
+ kfree(pages);
+ return -ENOMEM;
+ }
+ rc = alloc_xenballooned_pages(nr_pages, pages);
+ if (rc) {
+ pr_warn("%s Couldn't balloon alloc %ld pages rc:%d\n", __func__,
+ nr_pages, rc);
+ kfree(pages);
+ kfree(pfns);
+ return rc;
+ }
+
+ data.pfns = pfns;
+ data.idx = 0;
+ xen_for_each_gfn(pages, nr_grant_frames, setup_balloon_gfn, &data);
+
+ vaddr = vmap(pages, nr_pages, 0, PAGE_KERNEL);
+ if (!vaddr) {
+ pr_warn("%s Couldn't map %ld pages rc:%d\n", __func__,
+ nr_pages, rc);
+ free_xenballooned_pages(nr_pages, pages);
+ kfree(pages);
+ kfree(pfns);
+ return -ENOMEM;
+ }
+ kfree(pages);
+
+ *gfns = pfns;
+ *virt = vaddr;
+
+ return 0;
+}
+EXPORT_SYMBOL_GPL(xen_xlate_map_ballooned_pages);
diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h
index 25a822f6f000..44fda64ad434 100644
--- a/include/linux/kernel_stat.h
+++ b/include/linux/kernel_stat.h
@@ -92,7 +92,6 @@ static inline void account_process_tick(struct task_struct *tsk, int user)
extern void account_process_tick(struct task_struct *, int user);
#endif
-extern void account_steal_ticks(unsigned long ticks);
extern void account_idle_ticks(unsigned long ticks);
#endif /* _LINUX_KERNEL_STAT_H */
diff --git a/include/linux/of_fdt.h b/include/linux/of_fdt.h
index 901ec01c9fba..26c3302ae58f 100644
--- a/include/linux/of_fdt.h
+++ b/include/linux/of_fdt.h
@@ -53,6 +53,8 @@ extern char __dtb_end[];
extern int of_scan_flat_dt(int (*it)(unsigned long node, const char *uname,
int depth, void *data),
void *data);
+extern int of_get_flat_dt_subnode_by_name(unsigned long node,
+ const char *uname);
extern const void *of_get_flat_dt_prop(unsigned long node, const char *name,
int *size);
extern int of_flat_dt_is_compatible(unsigned long node, const char *name);
diff --git a/include/uapi/xen/evtchn.h b/include/uapi/xen/evtchn.h
index 14e833ee4e0b..cb4aa4bb905e 100644
--- a/include/uapi/xen/evtchn.h
+++ b/include/uapi/xen/evtchn.h
@@ -85,4 +85,19 @@ struct ioctl_evtchn_notify {
#define IOCTL_EVTCHN_RESET \
_IOC(_IOC_NONE, 'E', 5, 0)
+/*
+ * Restrict this file descriptor so that it can only be used to bind
+ * new interdomain events from one domain.
+ *
+ * Once a file descriptor has been restricted it cannot be
+ * de-restricted, and must be closed and re-opened. Event channels
+ * which were bound before restricting remain bound afterwards, and
+ * can be notified as usual.
+ */
+#define IOCTL_EVTCHN_RESTRICT_DOMID \
+ _IOC(_IOC_NONE, 'E', 6, sizeof(struct ioctl_evtchn_restrict_domid))
+struct ioctl_evtchn_restrict_domid {
+ domid_t domid;
+};
+
#endif /* __LINUX_PUBLIC_EVTCHN_H__ */
diff --git a/include/xen/interface/hvm/params.h b/include/xen/interface/hvm/params.h
index a6c79911e729..4d61fc58d99d 100644
--- a/include/xen/interface/hvm/params.h
+++ b/include/xen/interface/hvm/params.h
@@ -27,16 +27,44 @@
* Parameter space for HVMOP_{set,get}_param.
*/
+#define HVM_PARAM_CALLBACK_IRQ 0
/*
* How should CPU0 event-channel notifications be delivered?
- * val[63:56] == 0: val[55:0] is a delivery GSI (Global System Interrupt).
- * val[63:56] == 1: val[55:0] is a delivery PCI INTx line, as follows:
- * Domain = val[47:32], Bus = val[31:16],
- * DevFn = val[15: 8], IntX = val[ 1: 0]
- * val[63:56] == 2: val[7:0] is a vector number.
+ *
* If val == 0 then CPU0 event-channel notifications are not delivered.
+ * If val != 0, val[63:56] encodes the type, as follows:
*/
-#define HVM_PARAM_CALLBACK_IRQ 0
+
+#define HVM_PARAM_CALLBACK_TYPE_GSI 0
+/*
+ * val[55:0] is a delivery GSI. GSI 0 cannot be used, as it aliases val == 0,
+ * and disables all notifications.
+ */
+
+#define HVM_PARAM_CALLBACK_TYPE_PCI_INTX 1
+/*
+ * val[55:0] is a delivery PCI INTx line:
+ * Domain = val[47:32], Bus = val[31:16] DevFn = val[15:8], IntX = val[1:0]
+ */
+
+#if defined(__i386__) || defined(__x86_64__)
+#define HVM_PARAM_CALLBACK_TYPE_VECTOR 2
+/*
+ * val[7:0] is a vector number. Check for XENFEAT_hvm_callback_vector to know
+ * if this delivery method is available.
+ */
+#elif defined(__arm__) || defined(__aarch64__)
+#define HVM_PARAM_CALLBACK_TYPE_PPI 2
+/*
+ * val[55:16] needs to be zero.
+ * val[15:8] is interrupt flag of the PPI used by event-channel:
+ * bit 8: the PPI is edge(1) or level(0) triggered
+ * bit 9: the PPI is active low(1) or high(0)
+ * val[7:0] is a PPI number used by event-channel.
+ * This is only used by ARM/ARM64 and masking/eoi the interrupt associated to
+ * the notification is handled by the interrupt controller.
+ */
+#endif
#define HVM_PARAM_STORE_PFN 1
#define HVM_PARAM_STORE_EVTCHN 2
diff --git a/include/xen/interface/memory.h b/include/xen/interface/memory.h
index 2ecfe4f700d9..9aa8988cb340 100644
--- a/include/xen/interface/memory.h
+++ b/include/xen/interface/memory.h
@@ -160,6 +160,7 @@ DEFINE_GUEST_HANDLE_STRUCT(xen_machphys_mapping_t);
#define XENMAPSPACE_gmfn_foreign 4 /* GMFN from another dom,
* XENMEM_add_to_physmap_range only.
*/
+#define XENMAPSPACE_dev_mmio 5 /* device mmio region */
/*
* Sets the GPFN at which a particular page appears in the specified guest's
diff --git a/include/xen/interface/vcpu.h b/include/xen/interface/vcpu.h
index b05288ce3991..98188c87f5c1 100644
--- a/include/xen/interface/vcpu.h
+++ b/include/xen/interface/vcpu.h
@@ -75,15 +75,21 @@
*/
#define VCPUOP_get_runstate_info 4
struct vcpu_runstate_info {
- /* VCPU's current state (RUNSTATE_*). */
- int state;
- /* When was current state entered (system time, ns)? */
- uint64_t state_entry_time;
- /*
- * Time spent in each RUNSTATE_* (ns). The sum of these times is
- * guaranteed not to drift from system time.
- */
- uint64_t time[4];
+ /* VCPU's current state (RUNSTATE_*). */
+ int state;
+ /* When was current state entered (system time, ns)? */
+ uint64_t state_entry_time;
+ /*
+ * Update indicator set in state_entry_time:
+ * When activated via VMASST_TYPE_runstate_update_flag, set during
+ * updates in guest memory mapped copy of vcpu_runstate_info.
+ */
+#define XEN_RUNSTATE_UPDATE (1ULL << 63)
+ /*
+ * Time spent in each RUNSTATE_* (ns). The sum of these times is
+ * guaranteed not to drift from system time.
+ */
+ uint64_t time[4];
};
DEFINE_GUEST_HANDLE_STRUCT(vcpu_runstate_info);
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h
index d1331121c0bd..1b0d189cd3d3 100644
--- a/include/xen/interface/xen.h
+++ b/include/xen/interface/xen.h
@@ -413,7 +413,22 @@ DEFINE_GUEST_HANDLE_STRUCT(mmuext_op);
/* x86/PAE guests: support PDPTs above 4GB. */
#define VMASST_TYPE_pae_extended_cr3 3
-#define MAX_VMASST_TYPE 3
+/*
+ * x86 guests: Sane behaviour for virtual iopl
+ * - virtual iopl updated from do_iret() hypercalls.
+ * - virtual iopl reported in bounce frames.
+ * - guest kernels assumed to be level 0 for the purpose of iopl checks.
+ */
+#define VMASST_TYPE_architectural_iopl 4
+
+/*
+ * All guests: activate update indicator in vcpu_runstate_info
+ * Enable setting the XEN_RUNSTATE_UPDATE flag in guest memory mapped
+ * vcpu_runstate_info during updates of the runstate information.
+ */
+#define VMASST_TYPE_runstate_update_flag 5
+
+#define MAX_VMASST_TYPE 5
#ifndef __ASSEMBLY__
diff --git a/include/xen/xen-ops.h b/include/xen/xen-ops.h
index 86abe07b20ec..9a37c541822f 100644
--- a/include/xen/xen-ops.h
+++ b/include/xen/xen-ops.h
@@ -9,6 +9,12 @@
DECLARE_PER_CPU(struct vcpu_info *, xen_vcpu);
+DECLARE_PER_CPU(int, xen_vcpu_id);
+static inline int xen_vcpu_nr(int cpu)
+{
+ return per_cpu(xen_vcpu_id, cpu);
+}
+
void xen_arch_pre_suspend(void);
void xen_arch_post_suspend(int suspend_cancelled);
@@ -21,7 +27,9 @@ void xen_resume_notifier_unregister(struct notifier_block *nb);
bool xen_vcpu_stolen(int vcpu);
void xen_setup_runstate_info(int cpu);
+void xen_time_setup_guest(void);
void xen_get_runstate_snapshot(struct vcpu_runstate_info *res);
+u64 xen_steal_clock(int cpu);
int xen_setup_shutdown_event(void);
@@ -85,17 +93,33 @@ int xen_xlate_remap_gfn_array(struct vm_area_struct *vma,
struct page **pages);
int xen_xlate_unmap_gfn_range(struct vm_area_struct *vma,
int nr, struct page **pages);
+int xen_xlate_map_ballooned_pages(xen_pfn_t **pfns, void **vaddr,
+ unsigned long nr_grant_frames);
bool xen_running_on_version_or_later(unsigned int major, unsigned int minor);
-#ifdef CONFIG_XEN_EFI
-extern efi_system_table_t *xen_efi_probe(void);
-#else
-static inline efi_system_table_t __init *xen_efi_probe(void)
-{
- return NULL;
-}
-#endif
+efi_status_t xen_efi_get_time(efi_time_t *tm, efi_time_cap_t *tc);
+efi_status_t xen_efi_set_time(efi_time_t *tm);
+efi_status_t xen_efi_get_wakeup_time(efi_bool_t *enabled, efi_bool_t *pending,
+ efi_time_t *tm);
+efi_status_t xen_efi_set_wakeup_time(efi_bool_t enabled, efi_time_t *tm);
+efi_status_t xen_efi_get_variable(efi_char16_t *name, efi_guid_t *vendor,
+ u32 *attr, unsigned long *data_size,
+ void *data);
+efi_status_t xen_efi_get_next_variable(unsigned long *name_size,
+ efi_char16_t *name, efi_guid_t *vendor);
+efi_status_t xen_efi_set_variable(efi_char16_t *name, efi_guid_t *vendor,
+ u32 attr, unsigned long data_size,
+ void *data);
+efi_status_t xen_efi_query_variable_info(u32 attr, u64 *storage_space,
+ u64 *remaining_space,
+ u64 *max_variable_size);
+efi_status_t xen_efi_get_next_high_mono_count(u32 *count);
+efi_status_t xen_efi_update_capsule(efi_capsule_header_t **capsules,
+ unsigned long count, unsigned long sg_list);
+efi_status_t xen_efi_query_capsule_caps(efi_capsule_header_t **capsules,
+ unsigned long count, u64 *max_size,
+ int *reset_type);
#ifdef CONFIG_PREEMPT
diff --git a/kernel/sched/cputime.c b/kernel/sched/cputime.c
index ea0f6f31a244..1934f658c036 100644
--- a/kernel/sched/cputime.c
+++ b/kernel/sched/cputime.c
@@ -503,16 +503,6 @@ void account_process_tick(struct task_struct *p, int user_tick)
}
/*
- * Account multiple ticks of steal time.
- * @p: the process from which the cpu time has been stolen
- * @ticks: number of stolen ticks
- */
-void account_steal_ticks(unsigned long ticks)
-{
- account_steal_time(jiffies_to_cputime(ticks));
-}
-
-/*
* Account multiple ticks of idle time.
* @ticks: number of stolen ticks
*/