On Tue, Jan 18, 2011 at 11:09:22AM +0000, Russell King - ARM Linux wrote: > I'd rather not in this patch - this patch adds CPU_V6K as an alias for > CPU_V6 - so eveywhere which referenced CPU_V6 becomes (CPU_V6 || CPU_V6K). > We could remove it in a later patch though. Here's a follow-up patch to do that. There's a few other things which could do with updating now that we have CPU_Vx* straightened out. I've also recently noticed that the v6 and v7 cache stuff doesn't use the direct-call optimization (see commented out bits in cacheflush.h). That was because my original V6 support used the block cache operations, which had to be run-time tested for presence, and so modified the global cpu_cache methods directly. As the block cache stuff was dropped, we should re-enable this optimization. That said, I'd rather not add too much to this series as I think it needs to go into mainline ASAP - and probably stable as well, even though it's on the large side - once properly and fully tested. 8<---- Subject: [PATCH] ARM: v6k: DMA_CACHE_RWFO isn't appropriate for non-v6k CPUs Limit DMA_CACHE_RWFO to only v6k SMP CPUs - V6 CPUs aren't SMP capable, so the read/write for ownership work-around doesn't apply to them. Signed-off-by: Russell King <rmk+kernel@xxxxxxxxxxxxxxxx> --- arch/arm/mm/Kconfig | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index 843bc8c..808b832 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -775,7 +775,7 @@ config NEEDS_SYSCALL_FOR_CMPXCHG config DMA_CACHE_RWFO bool "Enable read/write for ownership DMA cache maintenance" - depends on (CPU_V6 || CPU_V6K) && SMP + depends on CPU_V6K && SMP default y help The Snoop Control Unit on ARM11MPCore does not detect the -- 1.6.2.5 -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
