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Re: [Xen-devel] [PATCH] arm32: fix build after 063188f4b3

On 10/10/2014 17:18, Jan Beulich wrote:
On 10.10.14 at 17:55, <julien.grall@xxxxxxxxxx> wrote:
On 10/10/2014 15:51, Jan Beulich wrote:
On 10.10.14 at 16:12, <julien.grall@xxxxxxxxxx> wrote:
This function is duplicate in 3 different places in Xen:
        - arch/arm/psci.c
        - arch/platforms/exynos5.c
        - arch/platforms/seattle.c

So all those functions should be fixed. I think it's time to introduce a
global SMC function...

Okay, I got the build failure only in this one place. But if and when
the compiler choses to do such transformations is entirely up to it,
so yes, if there are multiple instances likely they all would need

BTW,  named register is a GNU extension and not supported by clang. Can
you avoid to use them? Maybe by writing the function in assembly. So we
are safe against any compiler optimization.

I don't think I'm the right one to write ARM assembly code at this
point. I really just want the build fixed - anything beyond that I'd
rather leave to you guys.

I will write a patch and send it during the week-end.


Julien Grall

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