[PATCH 62/62] ARM: tegra: make debug_ll code build for ARMv6

Arnd Bergmann
2014-03-19T19:51:05Z

On Wednesday 19 March 2014 13:40:06 Stephen Warren wrote:
> Hmmm. This code is guaranteed to only execute on Tegra (well, perhaps
> someone can turn on the wrong debug option and run it on non-Tegra, but
> then it's guaranteed not to work since the HW it touches doesn't exist).
> As such, the code ought to be able to use ARMv7 instructions.
>
> As a fix for similar issues in assembly code in arch/arm/mach-tegra/*.S,
> Makefile there does:
>
> asflags-y += -march=armv7-a
>
> (I think you added that? Yes, in 408e713545ca "ARM: tegra: build
> assembly files with -march=armv7-a")
>
> Shouldn't we use the same fix in this case too?

That was my first idea, but I couldn't come up with a nice way to do this
for arch/arm/kernel/debug.S, which #includes the specific implementation.

I'd rather not put lots of per-platform hacks into arch/arm/kernel/Makefile.

Arnd