Re: [PATCH v2] crypto: arm64/sha: Add constant operand modifier to ASM_EXPORT

[Herbert Xu]

On Tue, Apr 18, 2017 at 10:34:01AM -0700, Matthias Kaehlcke wrote:
> El Tue, Apr 18, 2017 at 04:35:02PM +0100 Ard Biesheuvel ha dit:
> 
> > On 18 April 2017 at 15:47, Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx> wrote:
> > > On Wed, Apr 5, 2017 at 2:34 PM, Matthias Kaehlcke <mka@xxxxxxxxxxxx> wrote:
> > >> The operand is an integer constant, make the constness explicit by
> > >> adding the modifier. This is needed for clang to generate valid code
> > >> and also works with gcc.
> > >
> > > Actually it doesn't work with all gcc.  I've got an older arm64 toolchain that I
> > > only use for syntax checking (and hence I don't care if it is the latest and
> > > greatest) and this commit breaks it:
> > >
> > > arch/arm64/crypto/sha1-ce-glue.c:21:2: error: invalid 'asm': invalid
> > > operand prefix '%c'
> > >   asm(".globl " #sym "; .set " #sym ", %c0" :: "i"(val));
> 
> Sorry about that :(

So what's the consensus? Should I revert this patch?

Thanks,
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
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