Re: [Xen-devel] [PATCH v2 13/14] x86/cpuid: Handle leaf 0x8000001c in guest_cpuid()

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 01/23/2017 09:39 AM, Andrew Cooper wrote:
> Leaf 0x8000001c contains LWP information.  edx contains hardware supported
> features (and is clamped against the maximum), while ecx and ebx contain
> various properties of the implementation.  eax is entirely dynamic, depending
> on xcr0 and MSR_LWP_CFG.
>
> The call to guest_cpuid() in svm_update_lwp_cfg() can now be replaced by
> reading the data straight out of the cpuid_policy block.
>
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Reviewed-by: Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>


_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
https://lists.xen.org/xen-devel