Re: [PATCH 3/3] powerpc: check CPU_FTR_COHERENT_ICACHE in __flush_dcache_icache for 64bit kernel
On Tue, Aug 06, 2013 at 08:36:38PM +1000, Benjamin Herrenschmidt wrote: 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... Will add. Thanks, Kevin Ben. Signed-off-by: Kevin Hao haoke...@gmail.com --- 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 * pgpTnvxoFEvjr.pgp Description: PGP signature ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
Re: [PATCH 3/3] powerpc: check CPU_FTR_COHERENT_ICACHE in __flush_dcache_icache for 64bit kernel
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. Signed-off-by: Kevin Hao haoke...@gmail.com --- 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 * ___ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
