[RESEND 2][PATCH 4/4] Modify KVM to update guest time accounting.

Laurent Vivier
2007-09-10T14:14:40Z

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[PATCH 4/4] Modify KVM to update guest time accounting.

Signed-off-by: Laurent Vivier <Laurent.Vivier@bull.net>
--
------------- Laurent.Vivier@bull.net --------------
"Software is hard" - Donald Knuth

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Index: linux-2.6/drivers/kvm/kvm.h
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm.h 2007-09-10 14:56:52.000000000 +0200
+++ linux-2.6/drivers/kvm/kvm.h 2007-09-10 15:08:42.000000000 +0200
@@ -625,6 +625,19 @@ void kvm_mmu_unload(struct kvm_vcpu *vcp

int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);

+#ifndef PF_VCPU
+#define PF_VCPU 0
+#endif
+
+static inline void kvm_guest_enter(void)
+{
+ current->flags |= PF_VCPU;
+}
+
+static inline void kvm_guest_exit(void)
+{
+}
+
static inline int kvm_mmu_page_fault(struct kvm_vcpu *vcpu, gva_t gva,
u32 error_code)
{
Index: linux-2.6/drivers/kvm/svm.c
===================================================================
--- linux-2.6.orig/drivers/kvm/svm.c 2007-09-10 14:56:52.000000000 +0200
+++ linux-2.6/drivers/kvm/svm.c 2007-09-10 15:08:42.000000000 +0200
@@ -1494,6 +1494,7 @@ again:
clgi();

vcpu->guest_mode = 1;
+ kvm_guest_enter();
if (vcpu->requests)
if (test_and_clear_bit(KVM_TLB_FLUSH, &vcpu->requests))
svm_flush_tlb(vcpu);
@@ -1629,6 +1630,7 @@ again:
#endif
: "cc", "memory" );

+ kvm_guest_exit();
vcpu->guest_mode = 0;

if (vcpu->fpu_active) {
Index: linux-2.6/drivers/kvm/vmx.c
===================================================================
--- linux-2.6.orig/drivers/kvm/vmx.c 2007-09-10 14:56:52.000000000 +0200
+++ linux-2.6/drivers/kvm/vmx.c 2007-09-10 15:08:42.000000000 +0200
@@ -2018,6 +2018,7 @@ again:
local_irq_disable();

vcpu->guest_mode = 1;
+ kvm_guest_enter();
if (vcpu->requests)
if (test_and_clear_bit(KVM_TLB_FLUSH, &vcpu->requests))
vmx_flush_tlb(vcpu);
@@ -2138,6 +2139,7 @@ again:
[cr2]"i"(offsetof(struct kvm_vcpu, cr2))
: "cc", "memory" );

+ kvm_guest_exit();
vcpu->guest_mode = 0;
local_irq_enable();