From: Laurent Vivier <Laurent.Vivier@bull.net>
To: Ingo Molnar <mingo@elte.hu>
Cc: kvm-devel <kvm-devel@lists.sourceforge.net>,
linux-kernel <linux-kernel@vger.kernel.org>,
virtualization <virtualization@lists.linux-foundation.org>
Subject: [PATCH 4/4] Modify KVM to update guest time accounting.
Date: Mon, 20 Aug 2007 15:14:14 +0200 [thread overview]
Message-ID: <46C993A6.3060001@bull.net> (raw)
[-- Attachment #1: Type: text/plain, Size: 215 bytes --]
[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
[-- Attachment #2: kvm_account_guest --]
[-- Type: text/plain, Size: 2296 bytes --]
Index: kvm/drivers/kvm/kvm.h
===================================================================
--- kvm.orig/drivers/kvm/kvm.h 2007-08-20 13:23:53.000000000 +0200
+++ kvm/drivers/kvm/kvm.h 2007-08-20 13:23:58.000000000 +0200
@@ -589,6 +589,17 @@ void kvm_mmu_unload(struct kvm_vcpu *vcp
int kvm_hypercall(struct kvm_vcpu *vcpu, struct kvm_run *run);
+static inline void kvm_guest_enter(void)
+{
+#ifdef CONFIG_GUEST_ACCOUNTING
+ current->flags |= PF_VCPU;
+#endif
+}
+
+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: kvm/drivers/kvm/svm.c
===================================================================
--- kvm.orig/drivers/kvm/svm.c 2007-08-20 13:23:53.000000000 +0200
+++ kvm/drivers/kvm/svm.c 2007-08-20 13:23:58.000000000 +0200
@@ -1404,6 +1404,7 @@ 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);
@@ -1536,6 +1537,7 @@ again:
#endif
: "cc", "memory" );
+ kvm_guest_exit();
vcpu->guest_mode = 0;
if (vcpu->fpu_active) {
Index: kvm/drivers/kvm/vmx.c
===================================================================
--- kvm.orig/drivers/kvm/vmx.c 2007-08-20 13:23:53.000000000 +0200
+++ kvm/drivers/kvm/vmx.c 2007-08-20 13:23:58.000000000 +0200
@@ -2078,6 +2078,7 @@ 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);
@@ -2198,6 +2199,7 @@ again:
[cr2]"i"(offsetof(struct kvm_vcpu, cr2))
: "cc", "memory" );
+ kvm_guest_exit();
vcpu->guest_mode = 0;
local_irq_enable();
Index: kvm/drivers/kvm/Kconfig
===================================================================
--- kvm.orig/drivers/kvm/Kconfig 2007-08-20 13:36:58.000000000 +0200
+++ kvm/drivers/kvm/Kconfig 2007-08-20 13:37:36.000000000 +0200
@@ -13,6 +13,7 @@ config KVM
depends on X86 && EXPERIMENTAL
select PREEMPT_NOTIFIERS
select ANON_INODES
+ select GUEST_ACCOUNTING
---help---
Support hosting fully virtualized guest machines using hardware
virtualization extensions. You will need a fairly recent
next reply other threads:[~2007-08-20 13:14 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-20 13:14 Laurent Vivier [this message]
2007-08-20 13:40 ` [kvm-devel] " Avi Kivity
2007-08-20 13:49 ` Laurent Vivier
2007-08-20 14:08 ` Avi Kivity
2007-08-20 14:22 ` Laurent Vivier
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