Re: Linux patch disabling AVX when eagerfpu is turned off - possibly not required
From: H. Peter Anvin
Date: Thu Jan 21 2016 - 15:13:08 EST
On 01/21/16 12:08, Dave Hansen wrote:
> On 01/21/2016 02:33 AM, Leonid Shatz wrote:
>> In view of above findings we would like to suggest to double check if
>> disabling AVX together with "eagerfpu off" is actually required and is a
>> real necessity. It would be helpful to consult with Intel engineers
>> regarding related design details.
> Hi Leonid,
> Thanks for the report!
> Are you aware of any actual eagerfpu=off use in practice, or is this
> mostly a theoretical concern?
Looking into this, FWIW.