Re: [RFC] [Question] memset.S old code stuff

Catalin Marinas <[email protected]> Tue, 4 Aug 2026 16:57:54 +0100

Newsgroups	gmane.linux.kernel,gmane.linux.ports.arm.kernel
Message-ID	<[email protected]>

On Thu, Jul 23, 2026 at 12:17:15AM +0100, Bradley Morgan wrote:
> Hey folks, sorry for the crazy asm emails, I see that in memset.S in
> arch/arm64/lib/memset.S, the code is incredibly old code, like 2013 old
> (heh).
> 
> I was wondering if I could say, adapt it from optimized-routines (same
> treatment as memcpy.S essentially.

I think Robin attempted until he realised the use of the Q registers in
the Cortex Strings library, mentioned here:

https://lore.kernel.org/all/[email protected]/

So that's where Cortex Strings diverged from what we can use in the
kernel.

-- 
Catalin