Re: [PATCH] x86/hweight: Fix and improve __arch_hweight{32,64}() assembly

[Borislav Petkov]

On Mon, Mar 10, 2025 at 10:18:50PM +0100, Uros Bizjak wrote:
> a) Use ASM_CALL_CONSTRAINT to prevent inline asm that includes call
> instruction from being scheduled by the compiler before the frame
> pointer gets set
> up by the containing function. This unconstrained scheduling might
> cause objtool to print a "call without frame pointer save/setup"
> warning.
> 
> would be ok?

Yes, and pls say something along the lines of: this is not a currently
triggered issue but it can potentially happen, so that it is perfectly clear
what this patch is addressing.

Thx.

-- 
Regards/Gruss,
    Boris.

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