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powerpc/64s: Move branch cache flushing bcctr variant to ppc-ops.h

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Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200609070610.846703-6-npiggin@gmail.com
This commit is contained in:
Nicholas Piggin
2020-06-09 17:06:08 +10:00
committed by Michael Ellerman
parent c0036549a9
commit 70d7cdaf05
2 changed files with 4 additions and 4 deletions
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2
arch/powerpc/include/asm/ppc-opcode.h
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@@ -195,6 +195,7 @@
#define OP_LQ 56
/* sorted alphabetically */
#define PPC_INST_BCCTR_FLUSH 0x4c400420
#define PPC_INST_BHRBE 0x7c00025c
#define PPC_INST_CLRBHRB 0x7c00035c
#define PPC_INST_COPY 0x7c20060c
@@ -437,6 +438,7 @@
#endif
/* Deal with instructions that older assemblers aren't aware of */
#define PPC_BCCTR_FLUSH stringify_in_c(.long PPC_INST_BCCTR_FLUSH)
#define PPC_CP_ABORT stringify_in_c(.long PPC_INST_CP_ABORT)
#define PPC_COPY(a, b) stringify_in_c(.long PPC_INST_COPY | \
___PPC_RA(a) | ___PPC_RB(b))

6
arch/powerpc/kernel/entry_64.S
View File

@@ -261,8 +261,6 @@ _ASM_NOKPROBE_SYMBOL(save_nvgprs);
1: nop; \
patch_site 1b, patch__call_flush_branch_caches
#define BCCTR_FLUSH .long 0x4c400420
.macro nops number
.rept \number
nop
@@ -293,7 +291,7 @@ flush_branch_caches:
li r9,0x7fff
mtctr r9
BCCTR_FLUSH
PPC_BCCTR_FLUSH
2: nop
patch_site 2b patch__flush_count_cache_return
@@ -302,7 +300,7 @@ flush_branch_caches:
.rept 278
.balign 32
BCCTR_FLUSH
PPC_BCCTR_FLUSH
nops 7
.endr