[lkml]   [2019]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRE: [PATCH v9 09/17] x86/split_lock: Handle #AC exception for split lock
For the smt case, can you make #AC enable a property of the process?
Then disable it on the core if either smt process requires it be disabled?

This would mean that is a 'mixed environment' not all split accesses
would actually generate #AC - but enough would to detect broken code
that doesn't have #AC explicitly disabled.

I'm not sure you'd want a guest to flip #AC enable based on the process
it is scheduling, but it might work for the base metal scheduler.


Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK
Registration No: 1397386 (Wales)
 \ /
  Last update: 2019-10-16 16:15    [W:0.105 / U:1.096 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site