Extract VMX code for unhandleable VM-Exit during vectoring into vendor-agnostic function so that boiler-plate code can be shared by SVM.
Report an actual GPA for EPT misconfig or invalid GPA for any other exit code in internal.data[3].
Signed-off-by: Ivan Orlov iorlov@amazon.com --- V1 -> V2: - Return GPA for any exit reason, using reported GPA when it is valid or INVALID_GPA otherwise. - Rename the error preparation function - Fix indentation V2 -> V3: - Move 'gpa' declaration into block it is used in - Use 'if' instead of ternary operator when reporting GPA - Remove redundant cast
arch/x86/include/asm/kvm_host.h | 2 ++ arch/x86/kvm/vmx/vmx.c | 17 +++++------------ arch/x86/kvm/x86.c | 22 ++++++++++++++++++++++ 3 files changed, 29 insertions(+), 12 deletions(-)
diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index e159e44a6a1b..de8fb1ab230c 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -2062,6 +2062,8 @@ void __kvm_prepare_emulation_failure_exit(struct kvm_vcpu *vcpu, u64 *data, u8 ndata); void kvm_prepare_emulation_failure_exit(struct kvm_vcpu *vcpu);
+void kvm_prepare_event_vectoring_exit(struct kvm_vcpu *vcpu, gpa_t gpa); + void kvm_enable_efer_bits(u64); bool kvm_valid_efer(struct kvm_vcpu *vcpu, u64 efer); int kvm_get_msr_with_filter(struct kvm_vcpu *vcpu, u32 index, u64 *data); diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 893366e53732..acc2f0e0a339 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -6557,19 +6557,12 @@ static int __vmx_handle_exit(struct kvm_vcpu *vcpu, fastpath_t exit_fastpath) exit_reason.basic != EXIT_REASON_APIC_ACCESS && exit_reason.basic != EXIT_REASON_TASK_SWITCH && exit_reason.basic != EXIT_REASON_NOTIFY)) { - int ndata = 3; + gpa_t gpa = INVALID_GPA;
- vcpu->run->exit_reason = KVM_EXIT_INTERNAL_ERROR; - vcpu->run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV; - vcpu->run->internal.data[0] = vectoring_info; - vcpu->run->internal.data[1] = exit_reason.full; - vcpu->run->internal.data[2] = vmx_get_exit_qual(vcpu); - if (exit_reason.basic == EXIT_REASON_EPT_MISCONFIG) { - vcpu->run->internal.data[ndata++] = - vmcs_read64(GUEST_PHYSICAL_ADDRESS); - } - vcpu->run->internal.data[ndata++] = vcpu->arch.last_vmentry_cpu; - vcpu->run->internal.ndata = ndata; + if (exit_reason.basic == EXIT_REASON_EPT_MISCONFIG) + gpa = vmcs_read64(GUEST_PHYSICAL_ADDRESS); + + kvm_prepare_event_vectoring_exit(vcpu, gpa); return 0; }
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 2e713480933a..7ce9cdb66f19 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -8813,6 +8813,28 @@ void kvm_prepare_emulation_failure_exit(struct kvm_vcpu *vcpu) } EXPORT_SYMBOL_GPL(kvm_prepare_emulation_failure_exit);
+void kvm_prepare_event_vectoring_exit(struct kvm_vcpu *vcpu, gpa_t gpa) +{ + u32 reason, intr_info, error_code; + struct kvm_run *run = vcpu->run; + u64 info1, info2; + int ndata = 0; + + kvm_x86_call(get_exit_info)(vcpu, &reason, &info1, &info2, + &intr_info, &error_code); + + run->internal.data[ndata++] = info2; + run->internal.data[ndata++] = reason; + run->internal.data[ndata++] = info1; + run->internal.data[ndata++] = gpa; + run->internal.data[ndata++] = vcpu->arch.last_vmentry_cpu; + + run->exit_reason = KVM_EXIT_INTERNAL_ERROR; + run->internal.suberror = KVM_INTERNAL_ERROR_DELIVERY_EV; + run->internal.ndata = ndata; +} +EXPORT_SYMBOL_GPL(kvm_prepare_event_vectoring_exit); + static int handle_emulation_failure(struct kvm_vcpu *vcpu, int emulation_type) { struct kvm *kvm = vcpu->kvm;