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powerpc: Remove flush_instruction_cache for book3s/32

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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 <christophe.leroy@csgroup.eu>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/50098f49877cea0f46730a9df82dcabf84160e4b.1597384512.git.christophe.leroy@csgroup.eu
This commit is contained in:
Christophe Leroy 2020-08-14 05:56:24 +00:00 • committed by Michael Ellerman
parent 9d6792ffe1
commit e426ab39f4
1 changed files with 2 additions and 10 deletions
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12
arch/powerpc/kernel/misc_32.S
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@ -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