[PATCH v2 10/20] x86: avoid W^X being broken during modules loading

Nadav Amit nadav.amit at gmail.com
Mon Feb 11 20:32:41 UTC 2019


> On Feb 11, 2019, at 11:42 AM, Borislav Petkov <bp at alien8.de> wrote:
> 
> On Mon, Feb 11, 2019 at 11:27:03AM -0800, Nadav Amit wrote:
>> Is there any comment over static_cpu_has()? ;-)
> 
> Almost:
> 
> /*
> * Static testing of CPU features.  Used the same as boot_cpu_has().
> * These will statically patch the target code for additional
> * performance.
> */
> static __always_inline __pure bool _static_cpu_has(u16 bit)

Oh, I missed this comment.

BTW: the “__pure” attribute is useless when “__always_inline” is used.
Unless it is intended to be some sort of comment, of course.




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