Re: [PATCH v3 3/6] x86/cpufeatures: Add AMD feature bits for Speculation Control

[Tom Lendacky]

On 1/24/2018 4:52 PM, Tom Lendacky wrote:
> On 1/24/2018 11:57 AM, David Woodhouse wrote:
>> On Wed, 2018-01-24 at 18:20 +0100, Greg KH wrote:
>>> On Wed, Jan 24, 2018 at 04:57:02PM +0000, David Woodhouse wrote:
>>>>
>>>> AMD exposes the PRED_CMD/SPEC_CTRL MSRs slightly differently to Intel.
>>>> See http://lkml.kernel.org/r/2b3e25cc-286d-8bd0-aeaf-9ac4aae39de8@xxxxxxx
>>> Oh how fun :(
>>
>> At least they *work* the same :)
>>
>> Although I still haven't seen that doc, Tom...
> 
> Working on it...

The CPUID/MSR information is published:

  https://developer.amd.com/wp-content/resources/Architecture_Guidelines_Update_Indirect_Branch_Control.pdf

Thanks,
Tom

> 
> Thanks,
> Tom
> 
>>