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KVM: SVM: Add clean-bits infrastructure code

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This patch adds the infrastructure for the implementation of
the individual clean-bits.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Roedel, Joerg 2010-12-03 13:15:21 +01:00 committed by Avi Kivity
parent 700e1b1219
commit 8d28fec406
2 changed files with 33 additions and 1 deletions
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3
arch/x86/include/asm/svm.h
View File

@ -79,7 +79,8 @@ struct __attribute__ ((__packed__)) vmcb_control_area {
u32 event_inj_err;
u64 nested_cr3;
u64 lbr_ctl;
u64 reserved_5;
u32 clean;
u32 reserved_5;
u64 next_rip;
u8 reserved_6[816];
};

31
arch/x86/kvm/svm.c
View File

@ -185,6 +185,28 @@ static int nested_svm_vmexit(struct vcpu_svm *svm);
static int nested_svm_check_exception(struct vcpu_svm *svm, unsigned nr,
bool has_error_code, u32 error_code);
enum {
VMCB_DIRTY_MAX,
};
#define VMCB_ALWAYS_DIRTY_MASK 0U
static inline void mark_all_dirty(struct vmcb *vmcb)
{
vmcb->control.clean = 0;
}
static inline void mark_all_clean(struct vmcb *vmcb)
{
vmcb->control.clean = ((1 << VMCB_DIRTY_MAX) - 1)
& ~VMCB_ALWAYS_DIRTY_MASK;
}
static inline void mark_dirty(struct vmcb *vmcb, int bit)
{
vmcb->control.clean &= ~(1 << bit);
}
static inline struct vcpu_svm *to_svm(struct kvm_vcpu *vcpu)
{
return container_of(vcpu, struct vcpu_svm, vcpu);
@ -973,6 +995,8 @@ static void init_vmcb(struct vcpu_svm *svm)
set_intercept(svm, INTERCEPT_PAUSE);
}
mark_all_dirty(svm->vmcb);
enable_gif(svm);
}
@ -1089,6 +1113,7 @@ static void svm_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
if (unlikely(cpu != vcpu->cpu)) {
svm->asid_generation = 0;
mark_all_dirty(svm->vmcb);
}
#ifdef CONFIG_X86_64
@ -2140,6 +2165,8 @@ static int nested_svm_vmexit(struct vcpu_svm *svm)
svm->vmcb->save.cpl = 0;
svm->vmcb->control.exit_int_info = 0;
mark_all_dirty(svm->vmcb);
nested_svm_unmap(page);
nested_svm_uninit_mmu_context(&svm->vcpu);
@ -2351,6 +2378,8 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm)
enable_gif(svm);
mark_all_dirty(svm->vmcb);
return true;
}
@ -3490,6 +3519,8 @@ static void svm_vcpu_run(struct kvm_vcpu *vcpu)
if (unlikely(svm->vmcb->control.exit_code ==
SVM_EXIT_EXCP_BASE + MC_VECTOR))
svm_handle_mce(svm);
mark_all_clean(svm->vmcb);
}
#undef R