diff options
Diffstat (limited to 'arch/x86/kvm/mmu/mmu.c')
-rw-r--r-- | arch/x86/kvm/mmu/mmu.c | 38 |
1 files changed, 19 insertions, 19 deletions
diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c index ffc18f5a1adf..a9cbd94ea858 100644 --- a/arch/x86/kvm/mmu/mmu.c +++ b/arch/x86/kvm/mmu/mmu.c @@ -5765,10 +5765,12 @@ emulate: EXPORT_SYMBOL_GPL(kvm_mmu_page_fault); void kvm_mmu_invalidate_addr(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, - u64 addr, hpa_t root_hpa) + u64 addr, unsigned long roots) { int i; + WARN_ON_ONCE(roots & ~KVM_MMU_ROOTS_ALL); + /* It's actually a GPA for vcpu->arch.guest_mmu. */ if (mmu != &vcpu->arch.guest_mmu) { /* INVLPG on a non-canonical address is a NOP according to the SDM. */ @@ -5781,31 +5783,29 @@ void kvm_mmu_invalidate_addr(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, if (!mmu->invlpg) return; - if (root_hpa == INVALID_PAGE) { + if (roots & KVM_MMU_ROOT_CURRENT) mmu->invlpg(vcpu, addr, mmu->root.hpa); - /* - * INVLPG is required to invalidate any global mappings for the VA, - * irrespective of PCID. Since it would take us roughly similar amount - * of work to determine whether any of the prev_root mappings of the VA - * is marked global, or to just sync it blindly, so we might as well - * just always sync it. - * - * Mappings not reachable via the current cr3 or the prev_roots will be - * synced when switching to that cr3, so nothing needs to be done here - * for them. - */ - for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++) - if (VALID_PAGE(mmu->prev_roots[i].hpa)) - mmu->invlpg(vcpu, addr, mmu->prev_roots[i].hpa); - } else { - mmu->invlpg(vcpu, addr, root_hpa); + for (i = 0; i < KVM_MMU_NUM_PREV_ROOTS; i++) { + if ((roots & KVM_MMU_ROOT_PREVIOUS(i)) && + VALID_PAGE(mmu->prev_roots[i].hpa)) + mmu->invlpg(vcpu, addr, mmu->prev_roots[i].hpa); } } void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva) { - kvm_mmu_invalidate_addr(vcpu, vcpu->arch.walk_mmu, gva, INVALID_PAGE); + /* + * INVLPG is required to invalidate any global mappings for the VA, + * irrespective of PCID. Blindly sync all roots as it would take + * roughly the same amount of work/time to determine whether any of the + * previous roots have a global mapping. + * + * Mappings not reachable via the current or previous cached roots will + * be synced when switching to that new cr3, so nothing needs to be + * done here for them. + */ + kvm_mmu_invalidate_addr(vcpu, vcpu->arch.walk_mmu, gva, KVM_MMU_ROOTS_ALL); ++vcpu->stat.invlpg; } EXPORT_SYMBOL_GPL(kvm_mmu_invlpg); |