[PATCH 4/4] kselftest/arm64: Fix compilation of SME instructions in the arm64 fp tests

[Catalin Marinas]

On Fri, Nov 08, 2024 at 02:53:29PM +0000, Mark Brown wrote:
> On Fri, Nov 08, 2024 at 01:49:20PM +0000, Catalin Marinas wrote:
> > SMSTOP/SMSTART require the SME arch extension for the assembler. Add
> > '.arch_extension sme' to za-test.S and zt-test.S.
> 
> I've got an alternative, more idiomatic fix for this running through my
> testing - SME is still relatively recent so we can't rely on people's
> toolchains having it and we should use a .inst instead.  The issue was
> that the toolchain I'm using locally appears to default to a full fat
> version of the architecture and happily assembled the SMSTART even
> though we don't have a .inst macro for it like we do with SMSTOP (which
> is why that didn't error).  We only have SMSTART SM and SMSTART ZA.

It makes sense. Please post yours and I'll drop this one.

-- 
Catalin