Re: [CFT PATCH 0/2] KVM: support XSAVES usage in the host

[Nadav Amit]

Iâll try to check it tomorrow (I donât have access to the failing machine at the moment).

Thanks for the quick response.

Nadav

> On Nov 21, 2014, at 20:31, Paolo Bonzini <pbonzini@xxxxxxxxxx> wrote:
> 
> The first patch ensures that XSAVES is not exposed in the guest until
> we emulate MSR_IA32_XSS.  The second exports XSAVE data in the correct
> format.
> 
> I tested these on a non-XSAVES system so they should not be completely
> broken, but I need some help.  I am not even sure which XSAVE states
> are _not_ enabled, and thus compacted, in Linux.
> 
> Note that these patches do not add support for XSAVES in the guest yet,
> since MSR_IA32_XSS is not emulated.
> 
> If they fix the bug Nadav reported, I'll add Reported-by and commit.
> 
> Thanks,
> 
> Paolo
> 
> Paolo Bonzini (2):
>  kvm: x86: mask out XSAVES
>  KVM: x86: support XSAVES usage in the host
> 
> arch/x86/kvm/cpuid.c | 11 ++++++++++-
> arch/x86/kvm/x86.c   | 48 +++++++++++++++++++++++++++++++++++++++++++-----
> 2 files changed, 53 insertions(+), 6 deletions(-)
> 
> -- 
> 1.8.3.1
> 
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