Re: [PATCH v2 43/62] x86/alternative: Define ELF section entry size for alternatives

[Borislav Petkov]

On Fri, May 09, 2025 at 02:54:00PM -0700, Josh Poimboeuf wrote:
> On Fri, May 09, 2025 at 11:36:35PM +0200, Borislav Petkov wrote:
> > On Fri, May 09, 2025 at 01:17:07PM -0700, Josh Poimboeuf wrote:
> > > +#define ALTINSTR_SIZE		14
> > 
> > We have sizeof(struct alt_instr) to offer...
> 
> Right, but IIRC, sizeof(struct alt_instr) isn't available at macro
> expansion time so it would have to be provided as an input constraint.
> 
> That doesn't really work for the ALTERNATIVE macro, where the asm
> constraints are out of our control because they're set by the caller.

Bah, that doesn't work. And you're enforcing it with BUILD_BUG_ON(). Oh well,
ignore the noise.

:-)

-- 
Regards/Gruss,
    Boris.

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