[PATCH v2 3/3] powerpc: check CPU_FTR_COHERENT_ICACHE in __flush_dcache_icache for 64bit kernel
Kevin Hao
haokexin at gmail.com
Thu Aug 15 21:45:18 EST 2013
We don't need to flush the dcache and invalidate the icache on the
CPU which has CPU_FTR_COHERENT_ICACHE set. Also add the missing
required isync in this case.
Signed-off-by: Kevin Hao <haokexin at gmail.com>
---
v2: Add the isync.
arch/powerpc/kernel/misc_64.S | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/powerpc/kernel/misc_64.S b/arch/powerpc/kernel/misc_64.S
index 971d7e7..992a78e 100644
--- a/arch/powerpc/kernel/misc_64.S
+++ b/arch/powerpc/kernel/misc_64.S
@@ -207,6 +207,10 @@ _GLOBAL(flush_inval_dcache_range)
* void __flush_dcache_icache(void *page)
*/
_GLOBAL(__flush_dcache_icache)
+BEGIN_FTR_SECTION
+ isync
+ blr
+END_FTR_SECTION_IFSET(CPU_FTR_COHERENT_ICACHE)
/*
* Flush the data cache to memory
*
--
1.8.3.1
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