diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2020-12-10 11:09:47 -0600 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2020-12-15 05:20:47 -0500 |
| commit | 291bd20d5d88814a73d43b55b9428feab2f28094 (patch) | |
| tree | 18a6501c76226ca840985a5e6972a521259cac31 /arch/x86/kvm/svm/svm.h | |
| parent | e9093fd49285ff7b5e4d3f8b528f5b43445c5f5d (diff) | |
KVM: SVM: Add initial support for a VMGEXIT VMEXIT
SEV-ES adds a new VMEXIT reason code, VMGEXIT. Initial support for a
VMGEXIT includes mapping the GHCB based on the guest GPA, which is
obtained from a new VMCB field, and then validating the required inputs
for the VMGEXIT exit reason.
Since many of the VMGEXIT exit reasons correspond to existing VMEXIT
reasons, the information from the GHCB is copied into the VMCB control
exit code areas and KVM register areas. The standard exit handlers are
invoked, similar to standard VMEXIT processing. Before restarting the
vCPU, the GHCB is updated with any registers that have been updated by
the hypervisor.
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Message-Id: <c6a4ed4294a369bd75c44d03bd7ce0f0c3840e50.1607620209.git.thomas.lendacky@amd.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/svm/svm.h')
| -rw-r--r-- | arch/x86/kvm/svm/svm.h | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/x86/kvm/svm/svm.h b/arch/x86/kvm/svm/svm.h index abfe53d6b3dc..89bcb26977e5 100644 --- a/arch/x86/kvm/svm/svm.h +++ b/arch/x86/kvm/svm/svm.h @@ -17,6 +17,7 @@ #include <linux/kvm_types.h> #include <linux/kvm_host.h> +#include <linux/bits.h> #include <asm/svm.h> @@ -172,6 +173,7 @@ struct vcpu_svm { /* SEV-ES support */ struct vmcb_save_area *vmsa; struct ghcb *ghcb; + struct kvm_host_map ghcb_map; }; struct svm_cpu_data { @@ -390,6 +392,7 @@ static inline bool gif_set(struct vcpu_svm *svm) extern int sev; extern int sev_es; +extern bool dump_invalid_vmcb; u32 svm_msrpm_offset(u32 msr); u32 *svm_vcpu_alloc_msrpm(void); @@ -405,6 +408,7 @@ bool svm_smi_blocked(struct kvm_vcpu *vcpu); bool svm_nmi_blocked(struct kvm_vcpu *vcpu); bool svm_interrupt_blocked(struct kvm_vcpu *vcpu); void svm_set_gif(struct vcpu_svm *svm, bool value); +int svm_invoke_exit_handler(struct vcpu_svm *svm, u64 exit_code); /* nested.c */ @@ -510,6 +514,9 @@ void svm_vcpu_unblocking(struct kvm_vcpu *vcpu); /* sev.c */ +#define GHCB_MSR_INFO_POS 0 +#define GHCB_MSR_INFO_MASK (BIT_ULL(12) - 1) + extern unsigned int max_sev_asid; static inline bool svm_sev_enabled(void) @@ -527,5 +534,6 @@ void pre_sev_run(struct vcpu_svm *svm, int cpu); void __init sev_hardware_setup(void); void sev_hardware_teardown(void); void sev_free_vcpu(struct kvm_vcpu *vcpu); +int sev_handle_vmgexit(struct vcpu_svm *svm); #endif |