KVM: nested VMX: disable perf cpuid reporting

Browse source

Initilization of L2 guest with -cpu host, on L1 guest with -cpu host
triggers:

(qemu) KVM: entry failed, hardware error 0x7
...
nested_vmx_run: VMCS MSR_{LOAD,STORE} unsupported

Nested VMX MSR load/store support is not sufficient to
allow perf for L2 guest.

Until properly fixed, trap CPUID and disable function 0xA.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

...

This commit is contained in:

Marcelo Tosatti 2014-09-18 18:24:57 -03:00 • committed by Paolo Bonzini

parent a2b9e6c1a3

commit bc6134942d

2 changed files with 8 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

arch/x86/kvm/cpuid.c

View file

2

arch/x86/kvm/vmx.c

View file