[PATCH 02/12] KVM: SVM: Add clean-bit for intercetps, tsc-offset and pause filter count

Joerg Roedel
2010-12-03T10:46:23Z

This patch adds the clean-bit for intercepts-vectors, the
TSC offset and the pause-filter count to the appropriate
places. The IO and MSR permission bitmaps are not subject to
this bit.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kvm/svm.c | 7 +++++++
1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 3ee59b0..d8058c9 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -186,6 +186,8 @@ static int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
bool has_error_code, u32 error_code);

enum {
+ VMCB_INTERCEPTS, /* Intercept vectors, TSC offset,
+ pause filter count */
VMCB_DIRTY_MAX,
};

@@ -217,6 +219,8 @@ static void recalc_intercepts(struct vcpu_svm *svm)
struct vmcb_control_area *c, *h;
struct nested_state *g;

+ mark_dirty(svm->vmcb, VMCB_INTERCEPTS);
+
if (!is_guest_mode(&svm->vcpu))
return;

@@ -854,6 +858,8 @@ static void svm_write_tsc_offset(struct kvm_vcpu *vcpu, u64 offset)
}

svm->vmcb->control.tsc_offset = offset + g_tsc_offset;
+
+ mark_dirty(svm->vmcb, VMCB_INTERCEPTS);
}

static void svm_adjust_tsc_offset(struct kvm_vcpu *vcpu, s64 adjustment)
@@ -863,6 +869,7 @@ static void svm_adjust_tsc_offset(struct kvm_vcpu *vcpu, s64 adjustment)
svm->vmcb->control.tsc_offset += adjustment;
if (is_guest_mode(vcpu))
svm->nested.hsave->control.tsc_offset += adjustment;
+ mark_dirty(svm->vmcb, VMCB_INTERCEPTS);
}

static void init_vmcb(struct vcpu_svm *svm)
--
1.7.1