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| author | LEROY Christophe <christophe.leroy@c-s.fr> | 2015-04-20 05:54:38 (GMT) |
|---|---|---|
| committer | Scott Wood <scottwood@freescale.com> | 2015-06-03 02:37:25 (GMT) |
| commit | 90883a8255148e98026591e52a3495db18b29905 (patch) | |
| tree | ca0b27e76afbb41c9d495e38231c53956aced25b /arch/powerpc | |
| parent | 7f6972a0d018daacef3b31090057771bc657f18a (diff) | |
| download | linux-90883a8255148e98026591e52a3495db18b29905.tar.xz | |
powerpc/8xx: macro for handling CPU15 errata
Having a macro will help keep clear code.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Scott Wood <scottwood@freescale.com>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/kernel/head_8xx.S | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 9b53fe1..1279018 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -297,6 +297,17 @@ SystemCall: * We have to use the MD_xxx registers for the tablewalk because the * equivalent MI_xxx registers only perform the attribute functions. */ + +#ifdef CONFIG_8xx_CPU15 +#define INVALIDATE_ADJACENT_PAGES_CPU15(tmp, addr) \ + addi tmp, addr, PAGE_SIZE; \ + tlbie tmp; \ + addi tmp, addr, -PAGE_SIZE; \ + tlbie tmp +#else +#define INVALIDATE_ADJACENT_PAGES_CPU15(tmp, addr) +#endif + InstructionTLBMiss: #ifdef CONFIG_8xx_CPU6 mtspr SPRN_DAR, r3 @@ -304,12 +315,7 @@ InstructionTLBMiss: EXCEPTION_PROLOG_0 mtspr SPRN_SPRG_SCRATCH2, r10 mfspr r10, SPRN_SRR0 /* Get effective address of fault */ -#ifdef CONFIG_8xx_CPU15 - addi r11, r10, PAGE_SIZE - tlbie r11 - addi r11, r10, -PAGE_SIZE - tlbie r11 -#endif + INVALIDATE_ADJACENT_PAGES_CPU15(r11, r10) /* If we are faulting a kernel address, we have to use the * kernel page tables. |