Commit a06dcd62 authored Sep 12, 2019 by Jim Mattson Committed by Paolo Bonzini Sep 24, 2019

kvm: x86: Add "significant index" flag to a few CPUID leaves



According to the Intel SDM, volume 2, "CPUID," the index is
significant (or partially significant) for CPUID leaves 0FH, 10H, 12H,
17H, 18H, and 1FH.

Add the corresponding flag to these CPUID leaves in do_host_cpuid().

Signed-off-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Reviewed-by: Steve Rutherford <srutherford@google.com>
Fixes: a87f2d3a ("KVM: x86: Add Intel CPUID.1F cpuid emulation support")
Reviewed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Cc: stable@vger.kernel.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 9a5c034c

arch/x86/kvm/cpuid.c

+6 −0

Original line number	Diff line number	Diff line
		@@ -304,7 +304,13 @@ static void do_host_cpuid(struct kvm_cpuid_entry2 *entry, u32 function,
		case 7:
		case 0xb:
		case 0xd:
		case 0xf:
		case 0x10:
		case 0x12:
		case 0x14:
		case 0x17:
		case 0x18:
		case 0x1f:
		case 0x8000001d:
		entry->flags \|= KVM_CPUID_FLAG_SIGNIFCANT_INDEX;
		break;

Admin message