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Date: Tue, 3 Feb 2015 12:38:17 +0100 (CET) From: Christophe Leroy <christophe.leroy@....fr> To: Benjamin Herrenschmidt <benh@...nel.crashing.org>, Paul Mackerras <paulus@...ba.org>, Michael Ellerman <mpe@...erman.id.au>, scottwood@...escale.com CC: linux-kernel@...r.kernel.org, linuxppc-dev@...ts.ozlabs.org, Joakim Tjernlund <joakim.tjernlund@...nsmode.se> Subject: [PATCH v3 07/11] powerpc/8xx: macro for handling CPU15 errata Having a macro will help keep clear code. Signed-off-by: Christophe Leroy <christophe.leroy@....fr> --- v2: no change v3: Fixed the macro (missing -) and changed macro name to be more explicit arch/powerpc/kernel/head_8xx.S | 18 ++++++++++++------ 1 file changed, 12 insertions(+), 6 deletions(-) diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 987a589..59039a6 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. -- 2.1.0 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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