[PATCH] powerpc vdso updates

[Anton Blanchard]

Hi Ben,

> This patch cleans up some locking & error handling in the ppc vdso and
> moves the vdso base pointer from the thread struct to the mm context
> where it more logically belongs. It brings the powerpc implementation
> closer to Ingo's new x86 one and also adds an arch_vma_name() function
> allowing to print [vsdo] in /proc/<pid>/maps if Ingo's x86 vdso patch is
> also applied.

Im getting this on the current powerpc git tree:

arch/powerpc/kernel/signal_32.c: In function 'handle_rt_signal':
arch/powerpc/kernel/signal_32.c:763: error: request for member
'vdso_base' in something not a structure or union

It looks like we use the mm_context_t definition in asm-ppc/mmu.h for
32bit ARCH=powerpc builds and need vdso_base there too.

Anton