Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init
From: H. Peter Anvin
Date: Wed Jan 20 2016 - 09:48:56 EST
On January 20, 2016 3:05:19 AM PST, Borislav Petkov <bp@xxxxxxx> wrote:
>On Wed, Jan 20, 2016 at 02:55:24AM -0800, H. Peter Anvin wrote:
>> How about:
>> section for code used exclusively before alternatives are run. All
>references to such code must be patched out by alternatives, normally
>by using a patch with X86_FEATURE_ALWAYS.
>> See static_cpu_has() for an example.
>My thinking was to make it a bit more generic so that if we decide to
>some different monkey business with the alternatives, to put stuff in
>But we can always change that later - it's not like it is user-visible.
I don't think the verbiage I suggested in any way disagrees with that notion.
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