From 6a82cd1c7b1e38d3b940fcb35a81e902dd52fb35 Mon Sep 17 00:00:00 2001 From: Vitaly Kuznetsov Date: Mon, 8 Oct 2018 21:28:07 +0200 Subject: [PATCH] x86/kvm/mmu.c: add kvm_mmu parameter to kvm_mmu_free_roots() Add an option to specify which MMU root we want to free. This will be used when nested and non-nested MMUs for L1 are split. Signed-off-by: Vitaly Kuznetsov Signed-off-by: Paolo Bonzini Reviewed-by: Sean Christopherson --- arch/x86/include/asm/kvm_host.h | 3 ++- arch/x86/kvm/mmu.c | 9 +++++---- arch/x86/kvm/vmx.c | 2 +- 3 files changed, 8 insertions(+), 6 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 5e8f1a08b9d2..586ef144e564 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1339,7 +1339,8 @@ void __kvm_mmu_free_some_pages(struct kvm_vcpu *vcpu); int kvm_mmu_load(struct kvm_vcpu *vcpu); void kvm_mmu_unload(struct kvm_vcpu *vcpu); void kvm_mmu_sync_roots(struct kvm_vcpu *vcpu); -void kvm_mmu_free_roots(struct kvm_vcpu *vcpu, ulong roots_to_free); +void kvm_mmu_free_roots(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, + ulong roots_to_free); gpa_t translate_nested_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access, struct x86_exception *exception); gpa_t kvm_mmu_gva_to_gpa_read(struct kvm_vcpu *vcpu, gva_t gva, diff --git a/arch/x86/kvm/mmu.c b/arch/x86/kvm/mmu.c index 5b14dcbd248a..96c753746b3b 100644 --- a/arch/x86/kvm/mmu.c +++ b/arch/x86/kvm/mmu.c @@ -3480,11 +3480,11 @@ static void mmu_free_root_page(struct kvm *kvm, hpa_t *root_hpa, } /* roots_to_free must be some combination of the KVM_MMU_ROOT_* flags */ -void kvm_mmu_free_roots(struct kvm_vcpu *vcpu, ulong roots_to_free) +void kvm_mmu_free_roots(struct kvm_vcpu *vcpu, struct kvm_mmu *mmu, + ulong roots_to_free) { int i; LIST_HEAD(invalid_list); - struct kvm_mmu *mmu = vcpu->arch.mmu; bool free_active_root = roots_to_free & KVM_MMU_ROOT_CURRENT; BUILD_BUG_ON(KVM_MMU_NUM_PREV_ROOTS >= BITS_PER_LONG); @@ -4200,7 +4200,8 @@ static void __kvm_mmu_new_cr3(struct kvm_vcpu *vcpu, gpa_t new_cr3, bool skip_tlb_flush) { if (!fast_cr3_switch(vcpu, new_cr3, new_role, skip_tlb_flush)) - kvm_mmu_free_roots(vcpu, KVM_MMU_ROOT_CURRENT); + kvm_mmu_free_roots(vcpu, vcpu->arch.mmu, + KVM_MMU_ROOT_CURRENT); } void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu, gpa_t new_cr3, bool skip_tlb_flush) @@ -4981,7 +4982,7 @@ EXPORT_SYMBOL_GPL(kvm_mmu_load); void kvm_mmu_unload(struct kvm_vcpu *vcpu) { - kvm_mmu_free_roots(vcpu, KVM_MMU_ROOTS_ALL); + kvm_mmu_free_roots(vcpu, vcpu->arch.mmu, KVM_MMU_ROOTS_ALL); WARN_ON(VALID_PAGE(vcpu->arch.mmu->root_hpa)); } EXPORT_SYMBOL_GPL(kvm_mmu_unload); diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index fa7e46210a0d..a0c3992a5e88 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -9127,7 +9127,7 @@ static int handle_invpcid(struct kvm_vcpu *vcpu) == operand.pcid) roots_to_free |= KVM_MMU_ROOT_PREVIOUS(i); - kvm_mmu_free_roots(vcpu, roots_to_free); + kvm_mmu_free_roots(vcpu, vcpu->arch.mmu, roots_to_free); /* * If neither the current cr3 nor any of the prev_roots use the * given PCID, then nothing needs to be done here because a -- 2.11.0