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

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 23.01.17 at 15:39, <andrew.cooper3@xxxxxxxxxx> 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: Jan Beulich <jbeulich@xxxxxxxx>



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