Sean Christopherson dbdd096a5a KVM: VMX: Intercept FS/GS_BASE MSR accesses for 32-bit KVM ... Disable pass-through of the FS and GS base MSRs for 32-bit KVM. Intel's SDM unequivocally states that the MSRs exist if and only if the CPU supports x86-64. FS_BASE and GS_BASE are mostly a non-issue; a clever guest could opportunistically use the MSRs without issue. KERNEL_GS_BASE is a bigger problem, as a clever guest would subtly be broken if it were migrated, as KVM disallows software access to the MSRs, and unlike the direct variants, KERNEL_GS_BASE needs to be explicitly migrated as it's not captured in the VMCS. Fixes: 25c5f225be ("KVM: VMX: Enable MSR Bitmap feature") Signed-off-by: Sean Christopherson <seanjc@google.com> Message-Id: <20210422023831.3473491-1-seanjc@google.com> [*NOT* for stable kernels. - Paolo] Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>		2021-04-26 05:27:10 -04:00
..
capabilities.h	KVM: vmx/pmu: Expose LBR_FMT in the MSR_IA32_PERF_CAPABILITIES	2021-02-04 05:27:26 -05:00
evmcs.c	KVM: x86: hyper-v: allow KVM_GET_SUPPORTED_HV_CPUID as a system ioctl	2020-11-15 09:49:11 -05:00
evmcs.h	KVM: VMX: eVMCS: make evmcs_sanitize_exec_ctrls() work again	2020-10-31 10:27:58 -04:00
nested.c	KVM: VMX: Intercept FS/GS_BASE MSR accesses for 32-bit KVM	2021-04-26 05:27:10 -04:00
nested.h	KVM: VMX: Enable SGX virtualization for SGX1, SGX2 and LC	2021-04-20 04:18:56 -04:00
pmu_intel.c	KVM: vmx/pmu: Fix dummy check if lbr_desc->event is created	2021-02-23 12:07:35 -05:00
posted_intr.c	KVM: VMX: Use x2apic_mode to avoid RDMSR when querying PI state	2021-02-04 05:27:22 -05:00
posted_intr.h	KVM: vmx: rename pi_init to avoid conflict with paride	2020-10-24 04:09:54 -04:00
sgx.c	KVM: VMX: Enable SGX virtualization for SGX1, SGX2 and LC	2021-04-20 04:18:56 -04:00
sgx.h	KVM: VMX: Enable SGX virtualization for SGX1, SGX2 and LC	2021-04-20 04:18:56 -04:00
vmcs12.c	KVM: VMX: Enable SGX virtualization for SGX1, SGX2 and LC	2021-04-20 04:18:56 -04:00
vmcs12.h	KVM: VMX: Enable SGX virtualization for SGX1, SGX2 and LC	2021-04-20 04:18:56 -04:00
vmcs_shadow_fields.h	KVM: Fix some out-dated function names in comment	2020-01-21 13:57:27 +01:00
vmcs.h	KVM: VMX: Add a helper to test for a valid error code given an intr info	2020-09-28 07:57:50 -04:00
vmenter.S	KVM/nVMX: Use __vmx_vcpu_run in nested_vmx_check_vmentry_hw	2021-02-04 05:27:32 -05:00
vmx_ops.h	KVM: vmx: add mismatched size assertions in vmcs_check32()	2021-04-20 04:18:51 -04:00
vmx.c	KVM: VMX: Intercept FS/GS_BASE MSR accesses for 32-bit KVM	2021-04-26 05:27:10 -04:00
vmx.h	KVM: VMX: Invert the inlining of MSR interception helpers	2021-04-26 05:19:33 -04:00