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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 10:14:24 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-13 10:14:24 -0800
commit55065bc52795faae549abfb912aacc622dd63876 (patch)
tree63683547e41ed459a2a8747eeafb5e969633d54f /include
parent008d23e4852d78bb2618f2035f8b2110b6a6b968 (diff)
parente5c301428294cb8925667c9ee39f817c4ab1c2c9 (diff)
downloadlinux-55065bc52795faae549abfb912aacc622dd63876.tar.bz2
Merge branch 'kvm-updates/2.6.38' of git://git.kernel.org/pub/scm/virt/kvm/kvm
* 'kvm-updates/2.6.38' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (142 commits) KVM: Initialize fpu state in preemptible context KVM: VMX: when entering real mode align segment base to 16 bytes KVM: MMU: handle 'map_writable' in set_spte() function KVM: MMU: audit: allow audit more guests at the same time KVM: Fetch guest cr3 from hardware on demand KVM: Replace reads of vcpu->arch.cr3 by an accessor KVM: MMU: only write protect mappings at pagetable level KVM: VMX: Correct asm constraint in vmcs_load()/vmcs_clear() KVM: MMU: Initialize base_role for tdp mmus KVM: VMX: Optimize atomic EFER load KVM: VMX: Add definitions for more vm entry/exit control bits KVM: SVM: copy instruction bytes from VMCB KVM: SVM: implement enhanced INVLPG intercept KVM: SVM: enhance mov DR intercept handler KVM: SVM: enhance MOV CR intercept handler KVM: SVM: add new SVM feature bit names KVM: cleanup emulate_instruction KVM: move complete_insn_gp() into x86.c KVM: x86: fix CR8 handling KVM guest: Fix kvm clock initialization when it's configured out ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/kvm.h1
-rw-r--r--include/linux/kvm_host.h101
-rw-r--r--include/linux/kvm_types.h7
-rw-r--r--include/trace/events/kvm.h121
4 files changed, 215 insertions, 15 deletions
diff --git a/include/linux/kvm.h b/include/linux/kvm.h
index 919ae53adc5c..ea2dc1a2e13d 100644
--- a/include/linux/kvm.h
+++ b/include/linux/kvm.h
@@ -540,6 +540,7 @@ struct kvm_ppc_pvinfo {
#endif
#define KVM_CAP_PPC_GET_PVINFO 57
#define KVM_CAP_PPC_IRQ_LEVEL 58
+#define KVM_CAP_ASYNC_PF 59
#ifdef KVM_CAP_IRQ_ROUTING
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index a0557422715e..b5021db21858 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -16,6 +16,8 @@
#include <linux/mm.h>
#include <linux/preempt.h>
#include <linux/msi.h>
+#include <linux/slab.h>
+#include <linux/rcupdate.h>
#include <asm/signal.h>
#include <linux/kvm.h>
@@ -40,6 +42,7 @@
#define KVM_REQ_KICK 9
#define KVM_REQ_DEACTIVATE_FPU 10
#define KVM_REQ_EVENT 11
+#define KVM_REQ_APF_HALT 12
#define KVM_USERSPACE_IRQ_SOURCE_ID 0
@@ -74,6 +77,27 @@ int kvm_io_bus_register_dev(struct kvm *kvm, enum kvm_bus bus_idx,
int kvm_io_bus_unregister_dev(struct kvm *kvm, enum kvm_bus bus_idx,
struct kvm_io_device *dev);
+#ifdef CONFIG_KVM_ASYNC_PF
+struct kvm_async_pf {
+ struct work_struct work;
+ struct list_head link;
+ struct list_head queue;
+ struct kvm_vcpu *vcpu;
+ struct mm_struct *mm;
+ gva_t gva;
+ unsigned long addr;
+ struct kvm_arch_async_pf arch;
+ struct page *page;
+ bool done;
+};
+
+void kvm_clear_async_pf_completion_queue(struct kvm_vcpu *vcpu);
+void kvm_check_async_pf_completion(struct kvm_vcpu *vcpu);
+int kvm_setup_async_pf(struct kvm_vcpu *vcpu, gva_t gva, gfn_t gfn,
+ struct kvm_arch_async_pf *arch);
+int kvm_async_pf_wakeup_all(struct kvm_vcpu *vcpu);
+#endif
+
struct kvm_vcpu {
struct kvm *kvm;
#ifdef CONFIG_PREEMPT_NOTIFIERS
@@ -104,6 +128,15 @@ struct kvm_vcpu {
gpa_t mmio_phys_addr;
#endif
+#ifdef CONFIG_KVM_ASYNC_PF
+ struct {
+ u32 queued;
+ struct list_head queue;
+ struct list_head done;
+ spinlock_t lock;
+ } async_pf;
+#endif
+
struct kvm_vcpu_arch arch;
};
@@ -113,16 +146,19 @@ struct kvm_vcpu {
*/
#define KVM_MEM_MAX_NR_PAGES ((1UL << 31) - 1)
+struct kvm_lpage_info {
+ unsigned long rmap_pde;
+ int write_count;
+};
+
struct kvm_memory_slot {
gfn_t base_gfn;
unsigned long npages;
unsigned long flags;
unsigned long *rmap;
unsigned long *dirty_bitmap;
- struct {
- unsigned long rmap_pde;
- int write_count;
- } *lpage_info[KVM_NR_PAGE_SIZES - 1];
+ unsigned long *dirty_bitmap_head;
+ struct kvm_lpage_info *lpage_info[KVM_NR_PAGE_SIZES - 1];
unsigned long userspace_addr;
int user_alloc;
int id;
@@ -169,6 +205,7 @@ struct kvm_irq_routing_table {};
struct kvm_memslots {
int nmemslots;
+ u64 generation;
struct kvm_memory_slot memslots[KVM_MEMORY_SLOTS +
KVM_PRIVATE_MEM_SLOTS];
};
@@ -206,6 +243,10 @@ struct kvm {
struct mutex irq_lock;
#ifdef CONFIG_HAVE_KVM_IRQCHIP
+ /*
+ * Update side is protected by irq_lock and,
+ * if configured, irqfds.lock.
+ */
struct kvm_irq_routing_table __rcu *irq_routing;
struct hlist_head mask_notifier_list;
struct hlist_head irq_ack_notifier_list;
@@ -216,6 +257,7 @@ struct kvm {
unsigned long mmu_notifier_seq;
long mmu_notifier_count;
#endif
+ long tlbs_dirty;
};
/* The guest did something we don't support. */
@@ -302,7 +344,11 @@ void kvm_set_page_accessed(struct page *page);
pfn_t hva_to_pfn_atomic(struct kvm *kvm, unsigned long addr);
pfn_t gfn_to_pfn_atomic(struct kvm *kvm, gfn_t gfn);
+pfn_t gfn_to_pfn_async(struct kvm *kvm, gfn_t gfn, bool *async,
+ bool write_fault, bool *writable);
pfn_t gfn_to_pfn(struct kvm *kvm, gfn_t gfn);
+pfn_t gfn_to_pfn_prot(struct kvm *kvm, gfn_t gfn, bool write_fault,
+ bool *writable);
pfn_t gfn_to_pfn_memslot(struct kvm *kvm,
struct kvm_memory_slot *slot, gfn_t gfn);
int memslot_id(struct kvm *kvm, gfn_t gfn);
@@ -321,18 +367,25 @@ int kvm_write_guest_page(struct kvm *kvm, gfn_t gfn, const void *data,
int offset, int len);
int kvm_write_guest(struct kvm *kvm, gpa_t gpa, const void *data,
unsigned long len);
+int kvm_write_guest_cached(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
+ void *data, unsigned long len);
+int kvm_gfn_to_hva_cache_init(struct kvm *kvm, struct gfn_to_hva_cache *ghc,
+ gpa_t gpa);
int kvm_clear_guest_page(struct kvm *kvm, gfn_t gfn, int offset, int len);
int kvm_clear_guest(struct kvm *kvm, gpa_t gpa, unsigned long len);
struct kvm_memory_slot *gfn_to_memslot(struct kvm *kvm, gfn_t gfn);
int kvm_is_visible_gfn(struct kvm *kvm, gfn_t gfn);
unsigned long kvm_host_page_size(struct kvm *kvm, gfn_t gfn);
void mark_page_dirty(struct kvm *kvm, gfn_t gfn);
+void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot,
+ gfn_t gfn);
void kvm_vcpu_block(struct kvm_vcpu *vcpu);
void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);
void kvm_resched(struct kvm_vcpu *vcpu);
void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
void kvm_put_guest_fpu(struct kvm_vcpu *vcpu);
+
void kvm_flush_remote_tlbs(struct kvm *kvm);
void kvm_reload_remote_mmus(struct kvm *kvm);
@@ -398,7 +451,19 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
void kvm_free_physmem(struct kvm *kvm);
-struct kvm *kvm_arch_create_vm(void);
+#ifndef __KVM_HAVE_ARCH_VM_ALLOC
+static inline struct kvm *kvm_arch_alloc_vm(void)
+{
+ return kzalloc(sizeof(struct kvm), GFP_KERNEL);
+}
+
+static inline void kvm_arch_free_vm(struct kvm *kvm)
+{
+ kfree(kvm);
+}
+#endif
+
+int kvm_arch_init_vm(struct kvm *kvm);
void kvm_arch_destroy_vm(struct kvm *kvm);
void kvm_free_all_assigned_devices(struct kvm *kvm);
void kvm_arch_sync_events(struct kvm *kvm);
@@ -414,16 +479,8 @@ struct kvm_irq_ack_notifier {
void (*irq_acked)(struct kvm_irq_ack_notifier *kian);
};
-#define KVM_ASSIGNED_MSIX_PENDING 0x1
-struct kvm_guest_msix_entry {
- u32 vector;
- u16 entry;
- u16 flags;
-};
-
struct kvm_assigned_dev_kernel {
struct kvm_irq_ack_notifier ack_notifier;
- struct work_struct interrupt_work;
struct list_head list;
int assigned_dev_id;
int host_segnr;
@@ -434,13 +491,14 @@ struct kvm_assigned_dev_kernel {
bool host_irq_disabled;
struct msix_entry *host_msix_entries;
int guest_irq;
- struct kvm_guest_msix_entry *guest_msix_entries;
+ struct msix_entry *guest_msix_entries;
unsigned long irq_requested_type;
int irq_source_id;
int flags;
struct pci_dev *dev;
struct kvm *kvm;
- spinlock_t assigned_dev_lock;
+ spinlock_t intx_lock;
+ char irq_name[32];
};
struct kvm_irq_mask_notifier {
@@ -462,6 +520,8 @@ void kvm_get_intr_delivery_bitmask(struct kvm_ioapic *ioapic,
unsigned long *deliver_bitmask);
#endif
int kvm_set_irq(struct kvm *kvm, int irq_source_id, u32 irq, int level);
+int kvm_set_msi(struct kvm_kernel_irq_routing_entry *irq_entry, struct kvm *kvm,
+ int irq_source_id, int level);
void kvm_notify_acked_irq(struct kvm *kvm, unsigned irqchip, unsigned pin);
void kvm_register_irq_ack_notifier(struct kvm *kvm,
struct kvm_irq_ack_notifier *kian);
@@ -603,17 +663,28 @@ static inline void kvm_free_irq_routing(struct kvm *kvm) {}
void kvm_eventfd_init(struct kvm *kvm);
int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags);
void kvm_irqfd_release(struct kvm *kvm);
+void kvm_irq_routing_update(struct kvm *, struct kvm_irq_routing_table *);
int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args);
#else
static inline void kvm_eventfd_init(struct kvm *kvm) {}
+
static inline int kvm_irqfd(struct kvm *kvm, int fd, int gsi, int flags)
{
return -EINVAL;
}
static inline void kvm_irqfd_release(struct kvm *kvm) {}
+
+#ifdef CONFIG_HAVE_KVM_IRQCHIP
+static inline void kvm_irq_routing_update(struct kvm *kvm,
+ struct kvm_irq_routing_table *irq_rt)
+{
+ rcu_assign_pointer(kvm->irq_routing, irq_rt);
+}
+#endif
+
static inline int kvm_ioeventfd(struct kvm *kvm, struct kvm_ioeventfd *args)
{
return -ENOSYS;
diff --git a/include/linux/kvm_types.h b/include/linux/kvm_types.h
index 7ac0d4eee430..fa7cc7244cbd 100644
--- a/include/linux/kvm_types.h
+++ b/include/linux/kvm_types.h
@@ -67,4 +67,11 @@ struct kvm_lapic_irq {
u32 dest_id;
};
+struct gfn_to_hva_cache {
+ u64 generation;
+ gpa_t gpa;
+ unsigned long hva;
+ struct kvm_memory_slot *memslot;
+};
+
#endif /* __KVM_TYPES_H__ */
diff --git a/include/trace/events/kvm.h b/include/trace/events/kvm.h
index 6dd3a51ab1cb..46e3cd8e197a 100644
--- a/include/trace/events/kvm.h
+++ b/include/trace/events/kvm.h
@@ -6,6 +6,36 @@
#undef TRACE_SYSTEM
#define TRACE_SYSTEM kvm
+#define ERSN(x) { KVM_EXIT_##x, "KVM_EXIT_" #x }
+
+#define kvm_trace_exit_reason \
+ ERSN(UNKNOWN), ERSN(EXCEPTION), ERSN(IO), ERSN(HYPERCALL), \
+ ERSN(DEBUG), ERSN(HLT), ERSN(MMIO), ERSN(IRQ_WINDOW_OPEN), \
+ ERSN(SHUTDOWN), ERSN(FAIL_ENTRY), ERSN(INTR), ERSN(SET_TPR), \
+ ERSN(TPR_ACCESS), ERSN(S390_SIEIC), ERSN(S390_RESET), ERSN(DCR),\
+ ERSN(NMI), ERSN(INTERNAL_ERROR), ERSN(OSI)
+
+TRACE_EVENT(kvm_userspace_exit,
+ TP_PROTO(__u32 reason, int errno),
+ TP_ARGS(reason, errno),
+
+ TP_STRUCT__entry(
+ __field( __u32, reason )
+ __field( int, errno )
+ ),
+
+ TP_fast_assign(
+ __entry->reason = reason;
+ __entry->errno = errno;
+ ),
+
+ TP_printk("reason %s (%d)",
+ __entry->errno < 0 ?
+ (__entry->errno == -EINTR ? "restart" : "error") :
+ __print_symbolic(__entry->reason, kvm_trace_exit_reason),
+ __entry->errno < 0 ? -__entry->errno : __entry->reason)
+);
+
#if defined(__KVM_HAVE_IOAPIC)
TRACE_EVENT(kvm_set_irq,
TP_PROTO(unsigned int gsi, int level, int irq_source_id),
@@ -185,6 +215,97 @@ TRACE_EVENT(kvm_age_page,
__entry->referenced ? "YOUNG" : "OLD")
);
+#ifdef CONFIG_KVM_ASYNC_PF
+DECLARE_EVENT_CLASS(kvm_async_get_page_class,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn),
+
+ TP_STRUCT__entry(
+ __field(__u64, gva)
+ __field(u64, gfn)
+ ),
+
+ TP_fast_assign(
+ __entry->gva = gva;
+ __entry->gfn = gfn;
+ ),
+
+ TP_printk("gva = %#llx, gfn = %#llx", __entry->gva, __entry->gfn)
+);
+
+DEFINE_EVENT(kvm_async_get_page_class, kvm_try_async_get_page,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn)
+);
+
+DEFINE_EVENT(kvm_async_get_page_class, kvm_async_pf_doublefault,
+
+ TP_PROTO(u64 gva, u64 gfn),
+
+ TP_ARGS(gva, gfn)
+);
+
+DECLARE_EVENT_CLASS(kvm_async_pf_nopresent_ready,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva),
+
+ TP_STRUCT__entry(
+ __field(__u64, token)
+ __field(__u64, gva)
+ ),
+
+ TP_fast_assign(
+ __entry->token = token;
+ __entry->gva = gva;
+ ),
+
+ TP_printk("token %#llx gva %#llx", __entry->token, __entry->gva)
+
+);
+
+DEFINE_EVENT(kvm_async_pf_nopresent_ready, kvm_async_pf_not_present,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva)
+);
+
+DEFINE_EVENT(kvm_async_pf_nopresent_ready, kvm_async_pf_ready,
+
+ TP_PROTO(u64 token, u64 gva),
+
+ TP_ARGS(token, gva)
+);
+
+TRACE_EVENT(
+ kvm_async_pf_completed,
+ TP_PROTO(unsigned long address, struct page *page, u64 gva),
+ TP_ARGS(address, page, gva),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, address)
+ __field(pfn_t, pfn)
+ __field(u64, gva)
+ ),
+
+ TP_fast_assign(
+ __entry->address = address;
+ __entry->pfn = page ? page_to_pfn(page) : 0;
+ __entry->gva = gva;
+ ),
+
+ TP_printk("gva %#llx address %#lx pfn %#llx", __entry->gva,
+ __entry->address, __entry->pfn)
+);
+
+#endif
+
#endif /* _TRACE_KVM_MAIN_H */
/* This part must be outside protection */