From e426ab39f41045a4c163031272b2f48d944b69c0 Mon Sep 17 00:00:00 2001 From: Christophe Leroy Date: Fri, 14 Aug 2020 05:56:24 +0000 Subject: powerpc: Remove flush_instruction_cache for book3s/32 The only callers of flush_instruction_cache() are: arch/powerpc/kernel/swsusp_booke.S: bl flush_instruction_cache arch/powerpc/mm/nohash/40x.c: flush_instruction_cache(); arch/powerpc/mm/nohash/44x.c: flush_instruction_cache(); arch/powerpc/mm/nohash/fsl_booke.c: flush_instruction_cache(); arch/powerpc/platforms/44x/machine_check.c: flush_instruction_cache(); arch/powerpc/platforms/44x/machine_check.c: flush_instruction_cache(); This function is not used by book3s/32, drop it. Signed-off-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/50098f49877cea0f46730a9df82dcabf84160e4b.1597384512.git.christophe.leroy@csgroup.eu --- arch/powerpc/kernel/misc_32.S | 12 ++---------- 1 file changed, 2 insertions(+), 10 deletions(-) (limited to 'arch/powerpc/kernel/misc_32.S') diff --git a/arch/powerpc/kernel/misc_32.S b/arch/powerpc/kernel/misc_32.S index 8d9cb5df580e..aa860b8d1dcc 100644 --- a/arch/powerpc/kernel/misc_32.S +++ b/arch/powerpc/kernel/misc_32.S @@ -258,9 +258,8 @@ _ASM_NOKPROBE_SYMBOL(real_writeb) /* * Flush instruction cache. - * This is a no-op on the 601. */ -#ifndef CONFIG_PPC_8xx +#if !defined(CONFIG_PPC_8xx) && !defined(CONFIG_PPC_BOOK3S_32) _GLOBAL(flush_instruction_cache) #if defined(CONFIG_4xx) lis r3, KERNELBASE@h @@ -277,18 +276,11 @@ _GLOBAL(flush_instruction_cache) mfspr r3,SPRN_L1CSR1 ori r3,r3,L1CSR1_ICFI|L1CSR1_ICLFR mtspr SPRN_L1CSR1,r3 -#elif defined(CONFIG_PPC_BOOK3S_601) - blr /* for 601, do nothing */ -#else - /* 603/604 processor - use invalidate-all bit in HID0 */ - mfspr r3,SPRN_HID0 - ori r3,r3,HID0_ICFI - mtspr SPRN_HID0,r3 #endif /* CONFIG_4xx */ isync blr EXPORT_SYMBOL(flush_instruction_cache) -#endif /* CONFIG_PPC_8xx */ +#endif /* * Copy a whole page. We use the dcbz instruction on the destination -- cgit v1.2.3