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authorXiao Guangrong <xiaoguangrong@cn.fujitsu.com>2011-07-12 03:34:24 +0800
committerAvi Kivity <avi@redhat.com>2011-07-24 11:50:41 +0300
commit4f0226482d20f104e943ee9e6f1218b573953f63 (patch)
tree5e74a1b7829e48433640de3708e593b365cb7405 /arch/x86
parentce88decffd17bf9f373cc233c961ad2054965667 (diff)
KVM: MMU: trace mmio page fault
Add tracepoints to trace mmio page fault Signed-off-by: Xiao Guangrong <xiaoguangrong@cn.fujitsu.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/kvm/mmu.c5
-rw-r--r--arch/x86/kvm/mmutrace.h48
-rw-r--r--arch/x86/kvm/trace.h23
-rw-r--r--arch/x86/kvm/x86.c5
4 files changed, 80 insertions, 1 deletions
diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c
index 4e22df6f93ec..9335e1bf72ad 100644
--- a/arch/x86/kvm/mmu.c
+++ b/arch/x86/kvm/mmu.c
@@ -211,6 +211,7 @@ static void mark_mmio_spte(u64 *sptep, u64 gfn, unsigned access)
{
access &= ACC_WRITE_MASK | ACC_USER_MASK;
+ trace_mark_mmio_spte(sptep, gfn, access);
mmu_spte_set(sptep, shadow_mmio_mask | access | gfn << PAGE_SHIFT);
}
@@ -1940,6 +1941,8 @@ static void kvm_mmu_commit_zap_page(struct kvm *kvm,
kvm_mmu_isolate_pages(invalid_list);
sp = list_first_entry(invalid_list, struct kvm_mmu_page, link);
list_del_init(invalid_list);
+
+ trace_kvm_mmu_delay_free_pages(sp);
call_rcu(&sp->rcu, free_pages_rcu);
return;
}
@@ -2938,6 +2941,8 @@ int handle_mmio_page_fault_common(struct kvm_vcpu *vcpu, u64 addr, bool direct)
if (direct)
addr = 0;
+
+ trace_handle_mmio_page_fault(addr, gfn, access);
vcpu_cache_mmio_info(vcpu, addr, gfn, access);
return 1;
}
diff --git a/arch/x86/kvm/mmutrace.h b/arch/x86/kvm/mmutrace.h
index b60b4fdb3eda..eed67f34146d 100644
--- a/arch/x86/kvm/mmutrace.h
+++ b/arch/x86/kvm/mmutrace.h
@@ -196,6 +196,54 @@ DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_prepare_zap_page,
TP_ARGS(sp)
);
+DEFINE_EVENT(kvm_mmu_page_class, kvm_mmu_delay_free_pages,
+ TP_PROTO(struct kvm_mmu_page *sp),
+
+ TP_ARGS(sp)
+);
+
+TRACE_EVENT(
+ mark_mmio_spte,
+ TP_PROTO(u64 *sptep, gfn_t gfn, unsigned access),
+ TP_ARGS(sptep, gfn, access),
+
+ TP_STRUCT__entry(
+ __field(void *, sptep)
+ __field(gfn_t, gfn)
+ __field(unsigned, access)
+ ),
+
+ TP_fast_assign(
+ __entry->sptep = sptep;
+ __entry->gfn = gfn;
+ __entry->access = access;
+ ),
+
+ TP_printk("sptep:%p gfn %llx access %x", __entry->sptep, __entry->gfn,
+ __entry->access)
+);
+
+TRACE_EVENT(
+ handle_mmio_page_fault,
+ TP_PROTO(u64 addr, gfn_t gfn, unsigned access),
+ TP_ARGS(addr, gfn, access),
+
+ TP_STRUCT__entry(
+ __field(u64, addr)
+ __field(gfn_t, gfn)
+ __field(unsigned, access)
+ ),
+
+ TP_fast_assign(
+ __entry->addr = addr;
+ __entry->gfn = gfn;
+ __entry->access = access;
+ ),
+
+ TP_printk("addr:%llx gfn %llx access %x", __entry->addr, __entry->gfn,
+ __entry->access)
+);
+
TRACE_EVENT(
kvm_mmu_audit,
TP_PROTO(struct kvm_vcpu *vcpu, int audit_point),
diff --git a/arch/x86/kvm/trace.h b/arch/x86/kvm/trace.h
index 624f8cb46a6b..3ff898c104f7 100644
--- a/arch/x86/kvm/trace.h
+++ b/arch/x86/kvm/trace.h
@@ -698,6 +698,29 @@ TRACE_EVENT(kvm_emulate_insn,
#define trace_kvm_emulate_insn_start(vcpu) trace_kvm_emulate_insn(vcpu, 0)
#define trace_kvm_emulate_insn_failed(vcpu) trace_kvm_emulate_insn(vcpu, 1)
+TRACE_EVENT(
+ vcpu_match_mmio,
+ TP_PROTO(gva_t gva, gpa_t gpa, bool write, bool gpa_match),
+ TP_ARGS(gva, gpa, write, gpa_match),
+
+ TP_STRUCT__entry(
+ __field(gva_t, gva)
+ __field(gpa_t, gpa)
+ __field(bool, write)
+ __field(bool, gpa_match)
+ ),
+
+ TP_fast_assign(
+ __entry->gva = gva;
+ __entry->gpa = gpa;
+ __entry->write = write;
+ __entry->gpa_match = gpa_match
+ ),
+
+ TP_printk("gva %#lx gpa %#llx %s %s", __entry->gva, __entry->gpa,
+ __entry->write ? "Write" : "Read",
+ __entry->gpa_match ? "GPA" : "GVA")
+);
#endif /* _TRACE_KVM_H */
#undef TRACE_INCLUDE_PATH
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 2c9661f230a9..84a28ea45fa4 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -4021,6 +4021,7 @@ static int vcpu_mmio_gva_to_gpa(struct kvm_vcpu *vcpu, unsigned long gva,
vcpu->arch.access)) {
*gpa = vcpu->arch.mmio_gfn << PAGE_SHIFT |
(gva & (PAGE_SIZE - 1));
+ trace_vcpu_match_mmio(gva, *gpa, write, false);
return 1;
}
@@ -4036,8 +4037,10 @@ static int vcpu_mmio_gva_to_gpa(struct kvm_vcpu *vcpu, unsigned long gva,
if ((*gpa & PAGE_MASK) == APIC_DEFAULT_PHYS_BASE)
return 1;
- if (vcpu_match_mmio_gpa(vcpu, *gpa))
+ if (vcpu_match_mmio_gpa(vcpu, *gpa)) {
+ trace_vcpu_match_mmio(gva, *gpa, write, true);
return 1;
+ }
return 0;
}

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