KVM: nVMX: Check GUEST_IA32_PERF_GLOBAL_CTRL on VM-Entry
authorOliver Upton <oupton@google.com>
Thu, 14 Nov 2019 00:17:16 +0000 (16:17 -0800)
committerPaolo Bonzini <pbonzini@redhat.com>
Fri, 15 Nov 2019 10:44:13 +0000 (11:44 +0100)
commitbfc6ad6ab3563b4151bbcfe162c612930a3e0854
tree27639d937dfb38ed2e91191ba3ded0d4768f2127
parent9477f4449b0b011ce1d058c09ec450bfcdaab784
KVM: nVMX: Check GUEST_IA32_PERF_GLOBAL_CTRL on VM-Entry

Add condition to nested_vmx_check_guest_state() to check the validity of
GUEST_IA32_PERF_GLOBAL_CTRL. Per Intel's SDM Vol 3 26.3.1.1:

  If the "load IA32_PERF_GLOBAL_CTRL" VM-entry control is 1, bits
  reserved in the IA32_PERF_GLOBAL_CTRL MSR must be 0 in the field for that
  register.

Suggested-by: Jim Mattson <jmattson@google.com>
Co-developed-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Signed-off-by: Krish Sadhukhan <krish.sadhukhan@oracle.com>
Signed-off-by: Oliver Upton <oupton@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Peter Shier <pshier@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
arch/x86/kvm/vmx/nested.c