Sebastian Andrzej Siewior 504ce1954f KVM: x86: Expose XSAVEERPTR to the guest ...

I was surprised to see that the guest reported `fxsave_leak' while the
host did not. After digging deeper I noticed that the bits are simply
masked out during enumeration.

The XSAVEERPTR feature is actually a bug fix on AMD which means the
kernel can disable a workaround.

Pass XSAVEERPTR to the guest if available on the host.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

2019-09-26 13:20:55 +02:00

27 KiB

Raw Blame History

View Raw