[PATCH 05/12] KVM: SVM: Add clean-bit for interrupt state

Joerg Roedel
2010-12-03T10:46:29Z

This patch implements the clean-bit for all interrupt
related state in the vmcb. This corresponds to vmcb offset
0x60-0x67.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---
arch/x86/kvm/svm.c | 8 +++++++-
1 files changed, 7 insertions(+), 1 deletions(-)

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 8675048..b81d31a 100644
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -190,10 +190,12 @@ enum {
pause filter count */
VMCB_PERM_MAP, /* IOPM Base and MSRPM Base */
VMCB_ASID, /* ASID */
+ VMCB_INTR, /* int_ctl, int_vector */
VMCB_DIRTY_MAX,
};

-#define VMCB_ALWAYS_DIRTY_MASK 0U
+/* TPR is always written before VMRUN */
+#define VMCB_ALWAYS_DIRTY_MASK (1U << VMCB_INTR)

static inline void mark_all_dirty(struct vmcb *vmcb)
{
@@ -2507,6 +2509,8 @@ static int clgi_interception(struct vcpu_svm *svm)
svm_clear_vintr(svm);
svm->vmcb->control.int_ctl &= ~V_IRQ_MASK;

+ mark_dirty(svm->vmcb, VMCB_INTR);
+
return 1;
}

@@ -2877,6 +2881,7 @@ static int interrupt_window_interception(struct vcpu_svm *svm)
kvm_make_request(KVM_REQ_EVENT, &svm->vcpu);
svm_clear_vintr(svm);
svm->vmcb->control.int_ctl &= ~V_IRQ_MASK;
+ mark_dirty(svm->vmcb, VMCB_INTR);
/*
* If the user space waits to inject interrupts, exit as soon as
* possible
@@ -3168,6 +3173,7 @@ static inline void svm_inject_irq(struct vcpu_svm *svm, int irq)
control->int_ctl &= ~V_INTR_PRIO_MASK;
control->int_ctl |= V_IRQ_MASK |
((/*control->int_vector >> 4*/ 0xf) << V_INTR_PRIO_SHIFT);
+ mark_dirty(svm->vmcb, VMCB_INTR);
}

static void svm_set_irq(struct kvm_vcpu *vcpu)
--
1.7.1