Re: [PATCH 3/3] powerpc: check CPU_FTR_COHERENT_ICACHE in __flush_dcache_icache for 64bit kernel
flat view
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2013-08-06 10:36:45
On Tue, 2013-08-06 at 18:23 +0800, Kevin Hao wrote:
We don't need to flush the dcache and invalidate the icache on the CPU which has CPU_FTR_COHERENT_ICACHE set.
Actually we probably need an isync... Ben.
quoted hunk ↗ jump to hunk
Signed-off-by: Kevin Hao <redacted> --- arch/powerpc/kernel/misc_64.S | 3 +++ 1 file changed, 3 insertions(+)diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S index a781566..32e78e2 100644 --- a/arch/powerpc/kernel/misc_64.S +++ b/arch/powerpc/kernel/misc_64.S@@ -207,6 +207,9 @@ _GLOBAL(flush_inval_dcache_range) * void __flush_dcache_icache(void *page) */ _GLOBAL(__flush_dcache_icache) +BEGIN_FTR_SECTION + blr +END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE) /* * Flush the data cache to memory *