From: Laurent Vivier <Laurent.Vivier@bull.net>
To: Ingo Molnar <mingo@elte.hu>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: [RESEND][PATCH 4/4] Modify KVM to update guest time accounting.
Date: Mon, 10 Sep 2007 14:03:15 +0200 [thread overview]
Message-ID: <46E53283.8090108@bull.net> (raw)
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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/Kconfig
===================================================================
--- linux-2.6.orig/drivers/kvm/Kconfig 2007-09-10 13:00:18.000000000 +0200
+++ linux-2.6/drivers/kvm/Kconfig 2007-09-10 13:00:25.000000000 +0200
@@ -17,6 +17,7 @@ config KVM
tristate "Kernel-based Virtual Machine (KVM) support"
depends on X86 && EXPERIMENTAL
select ANON_INODES
+ select GUEST_ACCOUNTING
---help---
Support hosting fully virtualized guest machines using hardware
virtualization extensions. You will need a fairly recent
Index: linux-2.6/drivers/kvm/kvm.h
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm.h 2007-09-10 13:00:18.000000000 +0200
+++ linux-2.6/drivers/kvm/kvm.h 2007-09-10 13:00:25.000000000 +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 13:00:18.000000000 +0200
+++ linux-2.6/drivers/kvm/svm.c 2007-09-10 13:00:25.000000000 +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 13:00:18.000000000 +0200
+++ linux-2.6/drivers/kvm/vmx.c 2007-09-10 13:00:25.000000000 +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();
reply other threads:[~2007-09-10 12:04 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
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