summaryrefslogtreecommitdiffstats
path: root/arch/powerpc/kernel
diff options
context:
space:
mode:
Diffstat (limited to 'arch/powerpc/kernel')
-rw-r--r--arch/powerpc/kernel/dma-iommu.c34
-rw-r--r--arch/powerpc/kernel/head_64.S30
-rw-r--r--arch/powerpc/kernel/ibmebus.c27
-rw-r--r--arch/powerpc/kernel/iommu.c25
-rw-r--r--arch/powerpc/kernel/machine_kexec_64.c9
-rw-r--r--arch/powerpc/kernel/misc_64.S9
-rw-r--r--arch/powerpc/kernel/of_device.c1
-rw-r--r--arch/powerpc/kernel/pci-common.c110
-rw-r--r--arch/powerpc/kernel/pci_64.c2
-rw-r--r--arch/powerpc/kernel/prom_init.c10
-rw-r--r--arch/powerpc/kernel/setup_64.c6
-rw-r--r--arch/powerpc/kernel/signal_32.c36
-rw-r--r--arch/powerpc/kernel/signal_64.c33
-rw-r--r--arch/powerpc/kernel/vio.c25
-rw-r--r--arch/powerpc/kernel/vmlinux.lds.S5
15 files changed, 177 insertions, 185 deletions
diff --git a/arch/powerpc/kernel/dma-iommu.c b/arch/powerpc/kernel/dma-iommu.c
index 49248f89ce23..14183af1b3fb 100644
--- a/arch/powerpc/kernel/dma-iommu.c
+++ b/arch/powerpc/kernel/dma-iommu.c
@@ -30,28 +30,26 @@ static void dma_iommu_free_coherent(struct device *dev, size_t size,
}
/* Creates TCEs for a user provided buffer. The user buffer must be
- * contiguous real kernel storage (not vmalloc). The address of the buffer
- * passed here is the kernel (virtual) address of the buffer. The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * contiguous real kernel storage (not vmalloc). The address passed here
+ * comprises a page address and offset into that page. The dma_addr_t
+ * returned will point to the same byte within the page as was passed in.
*/
-static dma_addr_t dma_iommu_map_single(struct device *dev, void *vaddr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static dma_addr_t dma_iommu_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
- return iommu_map_single(dev, dev->archdata.dma_data, vaddr, size,
- device_to_mask(dev), direction, attrs);
+ return iommu_map_page(dev, dev->archdata.dma_data, page, offset, size,
+ device_to_mask(dev), direction, attrs);
}
-static void dma_iommu_unmap_single(struct device *dev, dma_addr_t dma_handle,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static void dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
- iommu_unmap_single(dev->archdata.dma_data, dma_handle, size, direction,
- attrs);
+ iommu_unmap_page(dev->archdata.dma_data, dma_handle, size, direction,
+ attrs);
}
@@ -94,10 +92,10 @@ static int dma_iommu_dma_supported(struct device *dev, u64 mask)
struct dma_mapping_ops dma_iommu_ops = {
.alloc_coherent = dma_iommu_alloc_coherent,
.free_coherent = dma_iommu_free_coherent,
- .map_single = dma_iommu_map_single,
- .unmap_single = dma_iommu_unmap_single,
.map_sg = dma_iommu_map_sg,
.unmap_sg = dma_iommu_unmap_sg,
.dma_supported = dma_iommu_dma_supported,
+ .map_page = dma_iommu_map_page,
+ .unmap_page = dma_iommu_unmap_page,
};
EXPORT_SYMBOL(dma_iommu_ops);
diff --git a/arch/powerpc/kernel/head_64.S b/arch/powerpc/kernel/head_64.S
index 69489bd3210c..b4bcf5a930fa 100644
--- a/arch/powerpc/kernel/head_64.S
+++ b/arch/powerpc/kernel/head_64.S
@@ -97,12 +97,6 @@ __secondary_hold_spinloop:
__secondary_hold_acknowledge:
.llong 0x0
- /* This flag is set by purgatory if we should be a kdump kernel. */
- /* Do not move this variable as purgatory knows about it. */
- .globl __kdump_flag
-__kdump_flag:
- .llong 0x0
-
#ifdef CONFIG_PPC_ISERIES
/*
* At offset 0x20, there is a pointer to iSeries LPAR data.
@@ -112,6 +106,20 @@ __kdump_flag:
.llong hvReleaseData-KERNELBASE
#endif /* CONFIG_PPC_ISERIES */
+#ifdef CONFIG_CRASH_DUMP
+ /* This flag is set to 1 by a loader if the kernel should run
+ * at the loaded address instead of the linked address. This
+ * is used by kexec-tools to keep the the kdump kernel in the
+ * crash_kernel region. The loader is responsible for
+ * observing the alignment requirement.
+ */
+ /* Do not move this variable as kexec-tools knows about it. */
+ . = 0x5c
+ .globl __run_at_load
+__run_at_load:
+ .long 0x72756e30 /* "run0" -- relocate to 0 by default */
+#endif
+
. = 0x60
/*
* The following code is used to hold secondary processors
@@ -1391,8 +1399,8 @@ _STATIC(__after_prom_start)
lis r25,PAGE_OFFSET@highest /* compute virtual base of kernel */
sldi r25,r25,32
#ifdef CONFIG_CRASH_DUMP
- ld r7,__kdump_flag-_stext(r26)
- cmpldi cr0,r7,1 /* kdump kernel ? - stay where we are */
+ lwz r7,__run_at_load-_stext(r26)
+ cmplwi cr0,r7,1 /* kdump kernel ? - stay where we are */
bne 1f
add r25,r25,r26
#endif
@@ -1416,11 +1424,11 @@ _STATIC(__after_prom_start)
#ifdef CONFIG_CRASH_DUMP
/*
* Check if the kernel has to be running as relocatable kernel based on the
- * variable __kdump_flag, if it is set the kernel is treated as relocatable
+ * variable __run_at_load, if it is set the kernel is treated as relocatable
* kernel, otherwise it will be moved to PHYSICAL_START
*/
- ld r7,__kdump_flag-_stext(r26)
- cmpldi cr0,r7,1
+ lwz r7,__run_at_load-_stext(r26)
+ cmplwi cr0,r7,1
bne 3f
li r5,__end_interrupts - _stext /* just copy interrupts */
diff --git a/arch/powerpc/kernel/ibmebus.c b/arch/powerpc/kernel/ibmebus.c
index a06362223f8d..64299d28f364 100644
--- a/arch/powerpc/kernel/ibmebus.c
+++ b/arch/powerpc/kernel/ibmebus.c
@@ -79,20 +79,21 @@ static void ibmebus_free_coherent(struct device *dev,
kfree(vaddr);
}
-static dma_addr_t ibmebus_map_single(struct device *dev,
- void *ptr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static dma_addr_t ibmebus_map_page(struct device *dev,
+ struct page *page,
+ unsigned long offset,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
- return (dma_addr_t)(ptr);
+ return (dma_addr_t)(page_address(page) + offset);
}
-static void ibmebus_unmap_single(struct device *dev,
- dma_addr_t dma_addr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static void ibmebus_unmap_page(struct device *dev,
+ dma_addr_t dma_addr,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
return;
}
@@ -129,11 +130,11 @@ static int ibmebus_dma_supported(struct device *dev, u64 mask)
static struct dma_mapping_ops ibmebus_dma_ops = {
.alloc_coherent = ibmebus_alloc_coherent,
.free_coherent = ibmebus_free_coherent,
- .map_single = ibmebus_map_single,
- .unmap_single = ibmebus_unmap_single,
.map_sg = ibmebus_map_sg,
.unmap_sg = ibmebus_unmap_sg,
.dma_supported = ibmebus_dma_supported,
+ .map_page = ibmebus_map_page,
+ .unmap_page = ibmebus_unmap_page,
};
static int ibmebus_match_path(struct device *dev, void *data)
diff --git a/arch/powerpc/kernel/iommu.c b/arch/powerpc/kernel/iommu.c
index 3857d7e2af0c..1bfa706b96e7 100644
--- a/arch/powerpc/kernel/iommu.c
+++ b/arch/powerpc/kernel/iommu.c
@@ -32,6 +32,7 @@
#include <linux/dma-mapping.h>
#include <linux/bitops.h>
#include <linux/iommu-helper.h>
+#include <linux/crash_dump.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm/iommu.h>
@@ -460,7 +461,7 @@ void iommu_unmap_sg(struct iommu_table *tbl, struct scatterlist *sglist,
static void iommu_table_clear(struct iommu_table *tbl)
{
- if (!__kdump_flag) {
+ if (!is_kdump_kernel()) {
/* Clear the table in case firmware left allocations in it */
ppc_md.tce_free(tbl, tbl->it_offset, tbl->it_size);
return;
@@ -564,21 +565,23 @@ void iommu_free_table(struct iommu_table *tbl, const char *node_name)
}
/* Creates TCEs for a user provided buffer. The user buffer must be
- * contiguous real kernel storage (not vmalloc). The address of the buffer
- * passed here is the kernel (virtual) address of the buffer. The buffer
- * need not be page aligned, the dma_addr_t returned will point to the same
- * byte within the page as vaddr.
+ * contiguous real kernel storage (not vmalloc). The address passed here
+ * comprises a page address and offset into that page. The dma_addr_t
+ * returned will point to the same byte within the page as was passed in.
*/
-dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl,
- void *vaddr, size_t size, unsigned long mask,
- enum dma_data_direction direction, struct dma_attrs *attrs)
+dma_addr_t iommu_map_page(struct device *dev, struct iommu_table *tbl,
+ struct page *page, unsigned long offset, size_t size,
+ unsigned long mask, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
dma_addr_t dma_handle = DMA_ERROR_CODE;
+ void *vaddr;
unsigned long uaddr;
unsigned int npages, align;
BUG_ON(direction == DMA_NONE);
+ vaddr = page_address(page) + offset;
uaddr = (unsigned long)vaddr;
npages = iommu_num_pages(uaddr, size, IOMMU_PAGE_SIZE);
@@ -604,9 +607,9 @@ dma_addr_t iommu_map_single(struct device *dev, struct iommu_table *tbl,
return dma_handle;
}
-void iommu_unmap_single(struct iommu_table *tbl, dma_addr_t dma_handle,
- size_t size, enum dma_data_direction direction,
- struct dma_attrs *attrs)
+void iommu_unmap_page(struct iommu_table *tbl, dma_addr_t dma_handle,
+ size_t size, enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
unsigned int npages;
diff --git a/arch/powerpc/kernel/machine_kexec_64.c b/arch/powerpc/kernel/machine_kexec_64.c
index e6efec788c4d..3c4ca046e854 100644
--- a/arch/powerpc/kernel/machine_kexec_64.c
+++ b/arch/powerpc/kernel/machine_kexec_64.c
@@ -255,14 +255,11 @@ static union thread_union kexec_stack
/* Our assembly helper, in kexec_stub.S */
extern NORET_TYPE void kexec_sequence(void *newstack, unsigned long start,
void *image, void *control,
- void (*clear_all)(void),
- unsigned long kdump_flag) ATTRIB_NORET;
+ void (*clear_all)(void)) ATTRIB_NORET;
/* too late to fail here */
void default_machine_kexec(struct kimage *image)
{
- unsigned long kdump_flag = 0;
-
/* prepare control code if any */
/*
@@ -275,8 +272,6 @@ void default_machine_kexec(struct kimage *image)
if (crashing_cpu == -1)
kexec_prepare_cpus();
- else
- kdump_flag = KDUMP_SIGNATURE;
/* switch to a staticly allocated stack. Based on irq stack code.
* XXX: the task struct will likely be invalid once we do the copy!
@@ -289,7 +284,7 @@ void default_machine_kexec(struct kimage *image)
*/
kexec_sequence(&kexec_stack, image->start, image,
page_address(image->control_code_page),
- ppc_md.hpte_clear_all, kdump_flag);
+ ppc_md.hpte_clear_all);
/* NOTREACHED */
}
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index a243fd072a77..3053fe5c62f2 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -611,12 +611,10 @@ real_mode: /* assume normal blr return */
/*
- * kexec_sequence(newstack, start, image, control, clear_all(), kdump_flag)
+ * kexec_sequence(newstack, start, image, control, clear_all())
*
* does the grungy work with stack switching and real mode switches
* also does simple calls to other code
- *
- * kdump_flag says whether the next kernel should be a kdump kernel.
*/
_GLOBAL(kexec_sequence)
@@ -649,7 +647,7 @@ _GLOBAL(kexec_sequence)
mr r29,r5 /* image (virt) */
mr r28,r6 /* control, unused */
mr r27,r7 /* clear_all() fn desc */
- mr r26,r8 /* kdump flag */
+ mr r26,r8 /* spare */
lhz r25,PACAHWCPUID(r13) /* get our phys cpu from paca */
/* disable interrupts, we are overwriting kernel data next */
@@ -711,6 +709,5 @@ _GLOBAL(kexec_sequence)
mr r4,r30 # start, aka phys mem offset
mtlr 4
li r5,0
- mr r6,r26 /* kdump_flag */
- blr /* image->start(physid, image->start, 0, kdump_flag); */
+ blr /* image->start(physid, image->start, 0); */
#endif /* CONFIG_KEXEC */
diff --git a/arch/powerpc/kernel/of_device.c b/arch/powerpc/kernel/of_device.c
index 93ae5b169f41..f3c9cae01dd5 100644
--- a/arch/powerpc/kernel/of_device.c
+++ b/arch/powerpc/kernel/of_device.c
@@ -78,7 +78,6 @@ struct of_device *of_device_alloc(struct device_node *np,
dev->dev.parent = parent;
dev->dev.release = of_release_dev;
dev->dev.archdata.of_node = np;
- set_dev_node(&dev->dev, of_node_to_nid(np));
if (bus_id)
strlcpy(dev->dev.bus_id, bus_id, BUS_ID_SIZE);
diff --git a/arch/powerpc/kernel/pci-common.c b/arch/powerpc/kernel/pci-common.c
index 1ec73938a00f..f36936d9fda3 100644
--- a/arch/powerpc/kernel/pci-common.c
+++ b/arch/powerpc/kernel/pci-common.c
@@ -1239,69 +1239,66 @@ static int __init reparent_resources(struct resource *parent,
* as well.
*/
-static void __init pcibios_allocate_bus_resources(struct list_head *bus_list)
+void pcibios_allocate_bus_resources(struct pci_bus *bus)
{
- struct pci_bus *bus;
+ struct pci_bus *b;
int i;
struct resource *res, *pr;
- /* Depth-First Search on bus tree */
- list_for_each_entry(bus, bus_list, node) {
- for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
- if ((res = bus->resource[i]) == NULL || !res->flags
- || res->start > res->end)
- continue;
- if (bus->parent == NULL)
- pr = (res->flags & IORESOURCE_IO) ?
- &ioport_resource : &iomem_resource;
- else {
- /* Don't bother with non-root busses when
- * re-assigning all resources. We clear the
- * resource flags as if they were colliding
- * and as such ensure proper re-allocation
- * later.
+ for (i = 0; i < PCI_BUS_NUM_RESOURCES; ++i) {
+ if ((res = bus->resource[i]) == NULL || !res->flags
+ || res->start > res->end)
+ continue;
+ if (bus->parent == NULL)
+ pr = (res->flags & IORESOURCE_IO) ?
+ &ioport_resource : &iomem_resource;
+ else {
+ /* Don't bother with non-root busses when
+ * re-assigning all resources. We clear the
+ * resource flags as if they were colliding
+ * and as such ensure proper re-allocation
+ * later.
+ */
+ if (ppc_pci_flags & PPC_PCI_REASSIGN_ALL_RSRC)
+ goto clear_resource;
+ pr = pci_find_parent_resource(bus->self, res);
+ if (pr == res) {
+ /* this happens when the generic PCI
+ * code (wrongly) decides that this
+ * bridge is transparent -- paulus
*/
- if (ppc_pci_flags & PPC_PCI_REASSIGN_ALL_RSRC)
- goto clear_resource;
- pr = pci_find_parent_resource(bus->self, res);
- if (pr == res) {
- /* this happens when the generic PCI
- * code (wrongly) decides that this
- * bridge is transparent -- paulus
- */
- continue;
- }
+ continue;
}
+ }
- DBG("PCI: %s (bus %d) bridge rsrc %d: %016llx-%016llx "
- "[0x%x], parent %p (%s)\n",
- bus->self ? pci_name(bus->self) : "PHB",
- bus->number, i,
- (unsigned long long)res->start,
- (unsigned long long)res->end,
- (unsigned int)res->flags,
- pr, (pr && pr->name) ? pr->name : "nil");
-
- if (pr && !(pr->flags & IORESOURCE_UNSET)) {
- if (request_resource(pr, res) == 0)
- continue;
- /*
- * Must be a conflict with an existing entry.
- * Move that entry (or entries) under the
- * bridge resource and try again.
- */
- if (reparent_resources(pr, res) == 0)
- continue;
- }
- printk(KERN_WARNING
- "PCI: Cannot allocate resource region "
- "%d of PCI bridge %d, will remap\n",
- i, bus->number);
-clear_resource:
- res->flags = 0;
+ DBG("PCI: %s (bus %d) bridge rsrc %d: %016llx-%016llx "
+ "[0x%x], parent %p (%s)\n",
+ bus->self ? pci_name(bus->self) : "PHB",
+ bus->number, i,
+ (unsigned long long)res->start,
+ (unsigned long long)res->end,
+ (unsigned int)res->flags,
+ pr, (pr && pr->name) ? pr->name : "nil");
+
+ if (pr && !(pr->flags & IORESOURCE_UNSET)) {
+ if (request_resource(pr, res) == 0)
+ continue;
+ /*
+ * Must be a conflict with an existing entry.
+ * Move that entry (or entries) under the
+ * bridge resource and try again.
+ */
+ if (reparent_resources(pr, res) == 0)
+ continue;
}
- pcibios_allocate_bus_resources(&bus->children);
+ printk(KERN_WARNING "PCI: Cannot allocate resource region "
+ "%d of PCI bridge %d, will remap\n", i, bus->number);
+clear_resource:
+ res->flags = 0;
}
+
+ list_for_each_entry(b, &bus->children, node)
+ pcibios_allocate_bus_resources(b);
}
static inline void __devinit alloc_resource(struct pci_dev *dev, int idx)
@@ -1372,10 +1369,13 @@ static void __init pcibios_allocate_resources(int pass)
void __init pcibios_resource_survey(void)
{
+ struct pci_bus *b;
+
/* Allocate and assign resources. If we re-assign everything, then
* we skip the allocate phase
*/
- pcibios_allocate_bus_resources(&pci_root_buses);
+ list_for_each_entry(b, &pci_root_buses, node)
+ pcibios_allocate_bus_resources(b);
if (!(ppc_pci_flags & PPC_PCI_REASSIGN_ALL_RSRC)) {
pcibios_allocate_resources(0);
diff --git a/arch/powerpc/kernel/pci_64.c b/arch/powerpc/kernel/pci_64.c
index 8247cff1cb3e..3502b9101e6b 100644
--- a/arch/powerpc/kernel/pci_64.c
+++ b/arch/powerpc/kernel/pci_64.c
@@ -426,7 +426,7 @@ int pcibios_unmap_io_space(struct pci_bus *bus)
pci_name(bus->self));
__flush_hash_table_range(&init_mm, res->start + _IO_BASE,
- res->end - res->start + 1);
+ res->end + _IO_BASE + 1);
return 0;
}
diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
index 23e0db203329..2445945d3761 100644
--- a/arch/powerpc/kernel/prom_init.c
+++ b/arch/powerpc/kernel/prom_init.c
@@ -671,7 +671,7 @@ static struct fake_elf {
u32 ignore_me;
} rpadesc;
} rpanote;
-} fake_elf __section(.fakeelf) = {
+} fake_elf = {
.elfhdr = {
.e_ident = { 0x7f, 'E', 'L', 'F',
ELFCLASS32, ELFDATA2MSB, EV_CURRENT },
@@ -713,13 +713,13 @@ static struct fake_elf {
.type = 0x12759999,
.name = "IBM,RPA-Client-Config",
.rpadesc = {
- .lpar_affinity = 1,
- .min_rmo_size = 128, /* in megabytes */
+ .lpar_affinity = 0,
+ .min_rmo_size = 64, /* in megabytes */
.min_rmo_percent = 0,
- .max_pft_size = 46, /* 2^46 bytes max PFT size */
+ .max_pft_size = 48, /* 2^48 bytes max PFT size */
.splpar = 1,
.min_load = ~0U,
- .new_mem_def = 1
+ .new_mem_def = 0
}
}
};
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index 843c0af210d0..169d74cef157 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c
@@ -444,9 +444,9 @@ void __init setup_system(void)
if (htab_address)
printk("htab_address = 0x%p\n", htab_address);
printk("htab_hash_mask = 0x%lx\n", htab_hash_mask);
-#if PHYSICAL_START > 0
- printk("physical_start = 0x%lx\n", PHYSICAL_START);
-#endif
+ if (PHYSICAL_START > 0)
+ printk("physical_start = 0x%lx\n",
+ PHYSICAL_START);
printk("-----------------------------------------------------\n");
DBG(" <- setup_system()\n");
diff --git a/arch/powerpc/kernel/signal_32.c b/arch/powerpc/kernel/signal_32.c
index 3e80aa32b8b0..a6a43103655e 100644
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -410,7 +410,7 @@ inline unsigned long copy_fpr_from_user(struct task_struct *task,
* altivec/spe instructions at some point.
*/
static int save_user_regs(struct pt_regs *regs, struct mcontext __user *frame,
- int sigret)
+ int sigret, int ctx_has_vsx_region)
{
unsigned long msr = regs->msr;
@@ -451,7 +451,7 @@ static int save_user_regs(struct pt_regs *regs, struct mcontext __user *frame,
* the saved MSR value to indicate that frame->mc_vregs
* contains valid data
*/
- if (current->thread.used_vsr) {
+ if (current->thread.used_vsr && ctx_has_vsx_region) {
__giveup_vsx(current);
if (copy_vsx_to_user(&frame->mc_vsregs, current))
return 1;
@@ -858,11 +858,11 @@ int handle_rt_signal32(unsigned long sig, struct k_sigaction *ka,
frame = &rt_sf->uc.uc_mcontext;
addr = frame;
if (vdso32_rt_sigtramp && current->mm->context.vdso_base) {
- if (save_user_regs(regs, frame, 0))
+ if (save_user_regs(regs, frame, 0, 1))
goto badframe;
regs->link = current->mm->context.vdso_base + vdso32_rt_sigtramp;
} else {
- if (save_user_regs(regs, frame, __NR_rt_sigreturn))
+ if (save_user_regs(regs, frame, __NR_rt_sigreturn, 1))
goto badframe;
regs->link = (unsigned long) frame->tramp;
}
@@ -936,12 +936,13 @@ long sys_swapcontext(struct ucontext __user *old_ctx,
int ctx_size, int r6, int r7, int r8, struct pt_regs *regs)
{
unsigned char tmp;
+ int ctx_has_vsx_region = 0;
#ifdef CONFIG_PPC64
unsigned long new_msr = 0;
if (new_ctx &&
- __get_user(new_msr, &new_ctx->uc_mcontext.mc_gregs[PT_MSR]))
+ get_user(new_msr, &new_ctx->uc_mcontext.mc_gregs[PT_MSR]))
return -EFAULT;
/*
* Check that the context is not smaller than the original
@@ -956,16 +957,9 @@ long sys_swapcontext(struct ucontext __user *old_ctx,
if ((ctx_size < sizeof(struct ucontext)) &&
(new_msr & MSR_VSX))
return -EINVAL;
-#ifdef CONFIG_VSX
- /*
- * If userspace doesn't provide enough room for VSX data,
- * but current thread has used VSX, we don't have anywhere
- * to store the full context back into.
- */
- if ((ctx_size < sizeof(struct ucontext)) &&
- (current->thread.used_vsr && old_ctx))
- return -EINVAL;
-#endif
+ /* Does the context have enough room to store VSX data? */
+ if (ctx_size >= sizeof(struct ucontext))
+ ctx_has_vsx_region = 1;
#else
/* Context size is for future use. Right now, we only make sure
* we are passed something we understand
@@ -985,17 +979,17 @@ long sys_swapcontext(struct ucontext __user *old_ctx,
*/
mctx = (struct mcontext __user *)
((unsigned long) &old_ctx->uc_mcontext & ~0xfUL);
- if (!access_ok(VERIFY_WRITE, old_ctx, sizeof(*old_ctx))
- || save_user_regs(regs, mctx, 0)
+ if (!access_ok(VERIFY_WRITE, old_ctx, ctx_size)
+ || save_user_regs(regs, mctx, 0, ctx_has_vsx_region)
|| put_sigset_t(&old_ctx->uc_sigmask, &current->blocked)
|| __put_user(to_user_ptr(mctx), &old_ctx->uc_regs))
return -EFAULT;
}
if (new_ctx == NULL)
return 0;
- if (!access_ok(VERIFY_READ, new_ctx, sizeof(*new_ctx))
+ if (!access_ok(VERIFY_READ, new_ctx, ctx_size)
|| __get_user(tmp, (u8 __user *) new_ctx)
- || __get_user(tmp, (u8 __user *) (new_ctx + 1) - 1))
+ || __get_user(tmp, (u8 __user *) new_ctx + ctx_size - 1))
return -EFAULT;
/*
@@ -1196,11 +1190,11 @@ int handle_signal32(unsigned long sig, struct k_sigaction *ka,
goto badframe;
if (vdso32_sigtramp && current->mm->context.vdso_base) {
- if (save_user_regs(regs, &frame->mctx, 0))
+ if (save_user_regs(regs, &frame->mctx, 0, 1))
goto badframe;
regs->link = current->mm->context.vdso_base + vdso32_sigtramp;
} else {
- if (save_user_regs(regs, &frame->mctx, __NR_sigreturn))
+ if (save_user_regs(regs, &frame->mctx, __NR_sigreturn, 1))
goto badframe;
regs->link = (unsigned long) frame->mctx.tramp;
}
diff --git a/arch/powerpc/kernel/signal_64.c b/arch/powerpc/kernel/signal_64.c
index c6a8f2326b6f..e132891d3cea 100644
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -74,7 +74,8 @@ static const char fmt64[] = KERN_INFO \
*/
static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
- int signr, sigset_t *set, unsigned long handler)
+ int signr, sigset_t *set, unsigned long handler,
+ int ctx_has_vsx_region)
{
/* When CONFIG_ALTIVEC is set, we _always_ setup v_regs even if the
* process never used altivec yet (MSR_VEC is zero in pt_regs of
@@ -121,7 +122,7 @@ static long setup_sigcontext(struct sigcontext __user *sc, struct pt_regs *regs,
* then out to userspace. Update v_regs to point after the
* VMX data.
*/
- if (current->thread.used_vsr) {
+ if (current->thread.used_vsr && ctx_has_vsx_region) {
__giveup_vsx(current);
v_regs += ELF_NVRREG;
err |= copy_vsx_to_user(v_regs, current);
@@ -282,9 +283,10 @@ int sys_swapcontext(struct ucontext __user *old_ctx,
unsigned char tmp;
sigset_t set;
unsigned long new_msr = 0;
+ int ctx_has_vsx_region = 0;
if (new_ctx &&
- __get_user(new_msr, &new_ctx->uc_mcontext.gp_regs[PT_MSR]))
+ get_user(new_msr, &new_ctx->uc_mcontext.gp_regs[PT_MSR]))
return -EFAULT;
/*
* Check that the context is not smaller than the original
@@ -299,28 +301,23 @@ int sys_swapcontext(struct ucontext __user *old_ctx,
if ((ctx_size < sizeof(struct ucontext)) &&
(new_msr & MSR_VSX))
return -EINVAL;
-#ifdef CONFIG_VSX
- /*
- * If userspace doesn't provide enough room for VSX data,
- * but current thread has used VSX, we don't have anywhere
- * to store the full context back into.
- */
- if ((ctx_size < sizeof(struct ucontext)) &&
- (current->thread.used_vsr && old_ctx))
- return -EINVAL;
-#endif
+ /* Does the context have enough room to store VSX data? */
+ if (ctx_size >= sizeof(struct ucontext))
+ ctx_has_vsx_region = 1;
+
if (old_ctx != NULL) {
- if (!access_ok(VERIFY_WRITE, old_ctx, sizeof(*old_ctx))
- || setup_sigcontext(&old_ctx->uc_mcontext, regs, 0, NULL, 0)
+ if (!access_ok(VERIFY_WRITE, old_ctx, ctx_size)
+ || setup_sigcontext(&old_ctx->uc_mcontext, regs, 0, NULL, 0,
+ ctx_has_vsx_region)
|| __copy_to_user(&old_ctx->uc_sigmask,
&current->blocked, sizeof(sigset_t)))
return -EFAULT;
}
if (new_ctx == NULL)
return 0;
- if (!access_ok(VERIFY_READ, new_ctx, sizeof(*new_ctx))
+ if (!access_ok(VERIFY_READ, new_ctx, ctx_size)
|| __get_user(tmp, (u8 __user *) new_ctx)
- || __get_user(tmp, (u8 __user *) (new_ctx + 1) - 1))
+ || __get_user(tmp, (u8 __user *) new_ctx + ctx_size - 1))
return -EFAULT;
/*
@@ -423,7 +420,7 @@ int handle_rt_signal64(int signr, struct k_sigaction *ka, siginfo_t *info,
&frame->uc.uc_stack.ss_flags);
err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, signr, NULL,
- (unsigned long)ka->sa.sa_handler);
+ (unsigned long)ka->sa.sa_handler, 1);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));
if (err)
goto badframe;
diff --git a/arch/powerpc/kernel/vio.c b/arch/powerpc/kernel/vio.c
index 434c92a85c03..a11e6bc59b30 100644
--- a/arch/powerpc/kernel/vio.c
+++ b/arch/powerpc/kernel/vio.c
@@ -516,10 +516,10 @@ static void vio_dma_iommu_free_coherent(struct device *dev, size_t size,
vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
}
-static dma_addr_t vio_dma_iommu_map_single(struct device *dev, void *vaddr,
- size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static dma_addr_t vio_dma_iommu_map_page(struct device *dev, struct page *page,
+ unsigned long offset, size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
struct vio_dev *viodev = to_vio_dev(dev);
dma_addr_t ret = DMA_ERROR_CODE;
@@ -529,7 +529,7 @@ static dma_addr_t vio_dma_iommu_map_single(struct device *dev, void *vaddr,
return ret;
}
- ret = dma_iommu_ops.map_single(dev, vaddr, size, direction, attrs);
+ ret = dma_iommu_ops.map_page(dev, page, offset, size, direction, attrs);
if (unlikely(dma_mapping_error(dev, ret))) {
vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
atomic_inc(&viodev->cmo.allocs_failed);
@@ -538,14 +538,14 @@ static dma_addr_t vio_dma_iommu_map_single(struct device *dev, void *vaddr,
return ret;
}
-static void vio_dma_iommu_unmap_single(struct device *dev,
- dma_addr_t dma_handle, size_t size,
- enum dma_data_direction direction,
- struct dma_attrs *attrs)
+static void vio_dma_iommu_unmap_page(struct device *dev, dma_addr_t dma_handle,
+ size_t size,
+ enum dma_data_direction direction,
+ struct dma_attrs *attrs)
{
struct vio_dev *viodev = to_vio_dev(dev);
- dma_iommu_ops.unmap_single(dev, dma_handle, size, direction, attrs);
+ dma_iommu_ops.unmap_page(dev, dma_handle, size, direction, attrs);
vio_cmo_dealloc(viodev, roundup(size, IOMMU_PAGE_SIZE));
}
@@ -603,10 +603,11 @@ static void vio_dma_iommu_unmap_sg(struct device *dev,
struct dma_mapping_ops vio_dma_mapping_ops = {
.alloc_coherent = vio_dma_iommu_alloc_coherent,
.free_coherent = vio_dma_iommu_free_coherent,
- .map_single = vio_dma_iommu_map_single,
- .unmap_single = vio_dma_iommu_unmap_single,
.map_sg = vio_dma_iommu_map_sg,
.unmap_sg = vio_dma_iommu_unmap_sg,
+ .map_page = vio_dma_iommu_map_page,
+ .unmap_page = vio_dma_iommu_unmap_page,
+
};
/**
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index b39c27ed7919..2412c056baa4 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -187,6 +187,7 @@ SECTIONS
*(.machine.desc)
__machine_desc_end = . ;
}
+#ifdef CONFIG_RELOCATABLE
. = ALIGN(8);
.dynsym : AT(ADDR(.dynsym) - LOAD_OFFSET) { *(.dynsym) }
.dynstr : AT(ADDR(.dynstr) - LOAD_OFFSET) { *(.dynstr) }
@@ -202,9 +203,7 @@ SECTIONS
__rela_dyn_start = .;
*(.rela*)
}
-
- /* Fake ELF header containing RPA note; for addnote */
- .fakeelf : AT(ADDR(.fakeelf) - LOAD_OFFSET) { *(.fakeelf) }
+#endif
/* freed after init ends here */
. = ALIGN(PAGE_SIZE);
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 14:41:08 +0000