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Subject: Re: [PATCH 00/25] mm: Preemptibility -v7
From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Sam Ravnborg <sam@ravnborg.org>
Cc: Andrea Arcangeli <aarcange@redhat.com>, Avi Kivity <avi@redhat.com>,
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        Yanmin Zhang <yanmin_zhang@linux.intel.com>
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Date: Tue, 25 Jan 2011 20:28:53 +0100
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On Tue, 2011-01-25 at 19:32 +0100, Sam Ravnborg wrote:

> Foregive me my ignorance..
> Why is this relevant for sparc64 but not for sparc32?
> 
> A quick grep showed up only this in sparc32 specific files:
> 
> mm/init_32.c:DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
> 
> Maybe this is just something sparc32 does not support?

sparc32 uses include/asm-generic/tlb.h, whereas sparc64 implements its
own variant.