Messages in this thread | | | From | Linus Torvalds <> | Date | Fri, 23 Mar 2018 11:26:49 -0700 | Subject | Re: [PATCH 00/11] Use global pages with PTI |
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On Fri, Mar 23, 2018 at 10:44 AM, Dave Hansen <dave.hansen@linux.intel.com> wrote: > > This adds one major change from the last version of the patch set > (present in the last patch). It makes all kernel text global for non- > PCID systems. This keeps kernel data protected always, but means that > it will be easier to find kernel gadgets via meltdown on old systems > without PCIDs. This heuristic is, I think, a reasonable one and it > keeps us from having to create any new pti=foo options
Sounds sane.
The patches look reasonable, but I hate seeing a patch series like this where the only ostensible reason is performance, and there are no performance numbers anywhere..
Linus
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