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

[Josh Poimboeuf]

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.

-- 
Josh