From 0959ffacf39b1ae7f56072b0c64429ee528100ca Mon Sep 17 00:00:00 2001 From: Joerg Roedel Date: Tue, 14 Sep 2010 17:46:12 +0200 Subject: [PATCH] KVM: MMU: Don't track nested fault info in error-code 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 Signed-off-by: Avi Kivity --- arch/x86/include/asm/kvm_host.h | 1 + arch/x86/kvm/mmu.h | 1 - arch/x86/kvm/x86.c | 14 ++++---------- 3 files changed, 5 insertions(+), 11 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 80224bf5d4f8..519d6f784984 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -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 diff --git a/arch/x86/kvm/mmu.h b/arch/x86/kvm/mmu.h index 513abbb5ff46..7086ca85d3e7 100644 --- a/arch/x86/kvm/mmu.h +++ b/arch/x86/kvm/mmu.h @@ -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); diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index a465bd29f381..a51635ee85ec 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -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; }