Paolo Bonzini 49830b2d1b KVM: x86: reinstate vendor-agnostic check on SPEC_CTRL cpuid bits ... commit 39485ed95d6b83b62fa75c06c2c4d33992e0d971 upstream. Until commit e7c587da12 ("x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP"), KVM was testing both Intel and AMD CPUID bits before allowing the guest to write MSR_IA32_SPEC_CTRL and MSR_IA32_PRED_CMD. Testing only Intel bits on VMX processors, or only AMD bits on SVM processors, fails if the guests are created with the "opposite" vendor as the host. While at it, also tweak the host CPU check to use the vendor-agnostic feature bit X86_FEATURE_IBPB, since we only care about the availability of the MSR on the host here and not about specific CPUID bits. Fixes: e7c587da12 ("x86/speculation: Use synthetic bits for IBRS/IBPB/STIBP") Cc: stable@vger.kernel.org Reported-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2020-12-30 11:54:14 +01:00
..
capabilities.h	KVM: VMX: Rename RDTSCP secondary exec control name to insert "ENABLE"	2020-09-28 07:57:30 -04:00
evmcs.c	KVM: VMX: eVMCS: make evmcs_sanitize_exec_ctrls() work again	2020-10-31 10:27:58 -04:00
evmcs.h	KVM: VMX: eVMCS: make evmcs_sanitize_exec_ctrls() work again	2020-10-31 10:27:58 -04:00
nested.c	ARM:	2020-10-23 11:17:56 -07:00
nested.h	KVM: nVMX: check for required but missing VMCS12 in KVM_SET_NESTED_STATE	2020-07-27 09:04:49 -04:00
pmu_intel.c	KVM: x86: move MSR_IA32_PERF_CAPABILITIES emulation to common x86 code	2020-07-10 12:52:56 -04:00
posted_intr.c	KVM: vmx: rename pi_init to avoid conflict with paride	2020-10-24 04:09:54 -04:00
posted_intr.h	KVM: vmx: rename pi_init to avoid conflict with paride	2020-10-24 04:09:54 -04:00
vmcs12.c	KVM: nVMX: Remove non-functional "support" for CR3 target values	2020-04-21 09:13:09 -04:00
vmcs12.h	KVM: nVMX: Remove non-functional "support" for CR3 target values	2020-04-21 09:13:09 -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: VMX: Move IRQ invocation to assembly subroutine	2020-09-28 07:57:20 -04:00
vmx_ops.h	KVM: VMX: Rename ops.h to vmx_ops.h	2020-09-28 07:57:38 -04:00
vmx.c	KVM: x86: reinstate vendor-agnostic check on SPEC_CTRL cpuid bits	2020-12-30 11:54:14 +01:00
vmx.h	Merge branch 'kvm-fixes' into 'next'	2020-10-21 18:05:58 -04:00