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| author | Vitaly Kuznetsov <vkuznets@redhat.com> | 2020-07-10 16:11:53 +0200 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-07-10 12:55:36 -0400 |
| commit | 62156f6cd15ab27cf19a97161b5f1820951a36b1 (patch) | |
| tree | 91e8328c9ae8f02bd4b9878e2d1e2f04c4b4a364 /arch/x86/kvm | |
| parent | 59cd9bc5b03f0bacce9506b068fec538aa9969a7 (diff) | |
| download | linux-62156f6cd15ab27cf19a97161b5f1820951a36b1.tar.bz2 | |
KVM: nSVM: introduce nested_svm_load_cr3()/nested_npt_enabled()
As a preparatory change for implementing nSVM-specific PGD switch
(following nVMX' nested_vmx_load_cr3()), introduce nested_svm_load_cr3()
instead of relying on kvm_set_cr3().
No functional change intended.
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20200710141157.1640173-6-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm')
| -rw-r--r-- | arch/x86/kvm/svm/nested.c | 21 |
1 files changed, 19 insertions, 2 deletions
diff --git a/arch/x86/kvm/svm/nested.c b/arch/x86/kvm/svm/nested.c index bca98651fa07..47069fe3aae5 100644 --- a/arch/x86/kvm/svm/nested.c +++ b/arch/x86/kvm/svm/nested.c @@ -336,6 +336,21 @@ static void nested_vmcb_save_pending_event(struct vcpu_svm *svm, nested_vmcb->control.exit_int_info = exit_int_info; } +static inline bool nested_npt_enabled(struct vcpu_svm *svm) +{ + return svm->nested.ctl.nested_ctl & SVM_NESTED_CTL_NP_ENABLE; +} + +/* + * Load guest's cr3 at nested entry. @nested_npt is true if we are + * emulating VM-Entry into a guest with NPT enabled. + */ +static int nested_svm_load_cr3(struct kvm_vcpu *vcpu, unsigned long cr3, + bool nested_npt) +{ + return kvm_set_cr3(vcpu, cr3); +} + static void nested_prepare_vmcb_save(struct vcpu_svm *svm, struct vmcb *nested_vmcb) { /* Load the nested guest state */ @@ -349,7 +364,8 @@ static void nested_prepare_vmcb_save(struct vcpu_svm *svm, struct vmcb *nested_v svm_set_efer(&svm->vcpu, nested_vmcb->save.efer); svm_set_cr0(&svm->vcpu, nested_vmcb->save.cr0); svm_set_cr4(&svm->vcpu, nested_vmcb->save.cr4); - (void)kvm_set_cr3(&svm->vcpu, nested_vmcb->save.cr3); + (void)nested_svm_load_cr3(&svm->vcpu, nested_vmcb->save.cr3, + nested_npt_enabled(svm)); svm->vmcb->save.cr2 = svm->vcpu.arch.cr2 = nested_vmcb->save.cr2; kvm_rax_write(&svm->vcpu, nested_vmcb->save.rax); @@ -368,7 +384,8 @@ static void nested_prepare_vmcb_save(struct vcpu_svm *svm, struct vmcb *nested_v static void nested_prepare_vmcb_control(struct vcpu_svm *svm) { const u32 mask = V_INTR_MASKING_MASK | V_GIF_ENABLE_MASK | V_GIF_MASK; - if (svm->nested.ctl.nested_ctl & SVM_NESTED_CTL_NP_ENABLE) + + if (nested_npt_enabled(svm)) nested_svm_init_mmu_context(&svm->vcpu); /* Guest paging mode is active - reset mmu */ |