On 10 April 2015 at 22:23, Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx> wrote: > >> On 10 apr. 2015, at 22:08, Arnd Bergmann <arnd@xxxxxxxx> wrote: >> >>> On Friday 10 April 2015 16:29:08 Ard Biesheuvel wrote: >>> +#if __ARM_MAX_ARCH__>=7 >>> +.arch armv7-a >>> +.fpu neon >>> + >> >> This will cause a build failure on an ARMv7-M build, which is incompatible >> with .arch armv7-a and .fpu neon. >> > > The neon part depends on CONFIG_KERNEL_MODE_NEON, which would never be set for that platform, I suppose On second thought, that is not entirely true, but I still don't think there is problem here: the .arch/.fpu declarations are understood perfectly fine by GAS when targeting ARMv7-M. Only, it will emit code that is incompatible with it. However, this code is invoked at runtime only if a NEON unit has been detected, so it will just be ignored on ARMv7-M -- Ard. -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
