Messages in this thread | | | Date | Mon, 7 Nov 2022 16:40:18 -0600 | From | Kim Phillips <> | Subject | Re: [PATCH 2/3] x86/speculation: Support Automatic IBRS |
| |
On 11/5/22 6:39 AM, David Laight wrote: > From: Borislav Petkov >> Sent: 04 November 2022 21:52 >> >> On Fri, Nov 04, 2022 at 04:36:50PM -0500, Kim Phillips wrote: >>> - Allow for spectre_v2=autoibrs in the kernel command line, >>> reverting to auto-selection if the feature isn't available. >> >> Why? >> >> What the whole logic here should do is enable autoibrs when detected >> automatically, without the need for the user to even select it as it is >> the superior mitigation. > > The only useful option is to allow a different option be > selected for code testing. > So maybe you want an option for completeness - for when > an 'even better' option is available.
This is true.
Kim
| |