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

2017-01-24 Thread Jan Beulich
>>> On 23.01.17 at 15:39, wrote: > Leaf 0x801c 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. > > T

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

2017-01-23 Thread Boris Ostrovsky
On 01/23/2017 09:39 AM, Andrew Cooper wrote: > Leaf 0x801c 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_

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

2017-01-23 Thread Andrew Cooper
Leaf 0x801c 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