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KVM: MMU: Don't track nested fault info in error-code

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This patch moves the detection whether a page-fault was
nested or not out of the error code and moves it into a
separate variable in the fault struct.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
This commit is contained in:
Joerg Roedel 2010-09-14 17:46:12 +02:00 committed by Avi Kivity
parent 625831a3f4
commit 0959ffacf3
3 changed files with 5 additions and 11 deletions
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1
arch/x86/include/asm/kvm_host.h
View File

@ -322,6 +322,7 @@ struct kvm_vcpu_arch {
struct {
u64 address;
unsigned error_code;
bool nested;
} fault;
/* only needed in kvm_pv_mmu_op() path, but it's hot so

1
arch/x86/kvm/mmu.h
View File

@ -47,7 +47,6 @@
#define PFERR_USER_MASK (1U << 2)
#define PFERR_RSVD_MASK (1U << 3)
#define PFERR_FETCH_MASK (1U << 4)
#define PFERR_NESTED_MASK (1U << 31)
int kvm_mmu_get_spte_hierarchy(struct kvm_vcpu *vcpu, u64 addr, u64 sptes[4]);
int kvm_init_shadow_mmu(struct kvm_vcpu *vcpu, struct kvm_mmu *context);

14
arch/x86/kvm/x86.c
View File

@ -342,18 +342,12 @@ void kvm_inject_page_fault(struct kvm_vcpu *vcpu)
void kvm_propagate_fault(struct kvm_vcpu *vcpu)
{
u32 nested, error;
error = vcpu->arch.fault.error_code;
nested = error & PFERR_NESTED_MASK;
error = error & ~PFERR_NESTED_MASK;
vcpu->arch.fault.error_code = error;
if (mmu_is_nested(vcpu) && !nested)
if (mmu_is_nested(vcpu) && !vcpu->arch.fault.nested)
vcpu->arch.nested_mmu.inject_page_fault(vcpu);
else
vcpu->arch.mmu.inject_page_fault(vcpu);
vcpu->arch.fault.nested = false;
}
void kvm_inject_nmi(struct kvm_vcpu *vcpu)
@ -3524,7 +3518,7 @@ static gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access)
access |= PFERR_USER_MASK;
t_gpa = vcpu->arch.mmu.gva_to_gpa(vcpu, gpa, access, &error);
if (t_gpa == UNMAPPED_GVA)
vcpu->arch.fault.error_code |= PFERR_NESTED_MASK;
vcpu->arch.fault.nested = true;
return t_gpa;
}