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Date: Wed, 10 Dec 2014 19:00:46 +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 Subject: [PATCH 4/4] powerpc32/8xx: invert _PAGE_RW bit in PTE accessors The 8xx inverts _PAGE_RW. Lets to it in PTE accessors. Signed-off-by: Christophe Leroy <christophe.leroy@....fr> --- arch/powerpc/include/asm/pte-8xx.h | 1 + arch/powerpc/kernel/head_8xx.S | 3 --- 2 files changed, 1 insertion(+), 3 deletions(-) diff --git a/arch/powerpc/include/asm/pte-8xx.h b/arch/powerpc/include/asm/pte-8xx.h index daa4616..57bad0a 100644 --- a/arch/powerpc/include/asm/pte-8xx.h +++ b/arch/powerpc/include/asm/pte-8xx.h @@ -57,6 +57,7 @@ #define _PMD_PAGE_8M 0x000c #define _PTE_NONE_MASK _PAGE_KNLRO +#define _PTE_HW_INVERTED _PAGE_RW /* Until my rework is finished, 8xx still needs atomic PTE updates */ #define PTE_ATOMIC_UPDATES 1 diff --git a/arch/powerpc/kernel/head_8xx.S b/arch/powerpc/kernel/head_8xx.S index 3d4b8ee..807b0db 100644 --- a/arch/powerpc/kernel/head_8xx.S +++ b/arch/powerpc/kernel/head_8xx.S @@ -441,9 +441,6 @@ DataStoreTLBMiss: and r11, r11, r10 rlwimi r10, r11, 0, _PAGE_PRESENT #endif - /* invert RW */ - xori r10, r10, _PAGE_RW - /* The Linux PTE won't go exactly into the MMU TLB. * Software indicator bits 22 and 28 must be clear. * Software indicator bits 24, 25, 26, and 27 must be -- 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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