diff options
Diffstat (limited to 'arch/x86/kvm/vmx/nested.c')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index 1c38640dd4d8..8b111682fe5c 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -11,6 +11,7 @@ #include "mmu.h" #include "nested.h" #include "pmu.h" +#include "sgx.h" #include "trace.h" #include "vmx.h" #include "x86.h" @@ -2300,6 +2301,9 @@ static void prepare_vmcs02_early(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12) if (!nested_cpu_has2(vmcs12, SECONDARY_EXEC_UNRESTRICTED_GUEST)) exec_control &= ~SECONDARY_EXEC_UNRESTRICTED_GUEST; + if (exec_control & SECONDARY_EXEC_ENCLS_EXITING) + vmx_write_encls_bitmap(&vmx->vcpu, vmcs12); + secondary_exec_controls_set(vmx, exec_control); } @@ -5712,6 +5716,21 @@ static bool nested_vmx_exit_handled_cr(struct kvm_vcpu *vcpu, return false; } +static bool nested_vmx_exit_handled_encls(struct kvm_vcpu *vcpu, + struct vmcs12 *vmcs12) +{ + u32 encls_leaf; + + if (!guest_cpuid_has(vcpu, X86_FEATURE_SGX) || + !nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENCLS_EXITING)) + return false; + + encls_leaf = kvm_rax_read(vcpu); + if (encls_leaf > 62) + encls_leaf = 63; + return vmcs12->encls_exiting_bitmap & BIT_ULL(encls_leaf); +} + static bool nested_vmx_exit_handled_vmcs_access(struct kvm_vcpu *vcpu, struct vmcs12 *vmcs12, gpa_t bitmap) { @@ -5808,9 +5827,6 @@ static bool nested_vmx_l0_wants_exit(struct kvm_vcpu *vcpu, case EXIT_REASON_VMFUNC: /* VM functions are emulated through L2->L0 vmexits. */ return true; - case EXIT_REASON_ENCLS: - /* SGX is never exposed to L1 */ - return true; default: break; } @@ -5934,6 +5950,8 @@ static bool nested_vmx_l1_wants_exit(struct kvm_vcpu *vcpu, case EXIT_REASON_TPAUSE: return nested_cpu_has2(vmcs12, SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE); + case EXIT_REASON_ENCLS: + return nested_vmx_exit_handled_encls(vcpu, vmcs12); default: return true; } @@ -6509,6 +6527,9 @@ void nested_vmx_setup_ctls_msrs(struct nested_vmx_msrs *msrs, u32 ept_caps) msrs->secondary_ctls_high |= SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES; + if (enable_sgx) + msrs->secondary_ctls_high |= SECONDARY_EXEC_ENCLS_EXITING; + /* miscellaneous data */ rdmsr(MSR_IA32_VMX_MISC, msrs->misc_low, |