[PATCH 4/4] powerpc32/8xx: invert _PAGE_RW bit in PTE accessors
From: Christophe Leroy <hidden>
Date: 2014-12-10 18:02:09
Also in:
lkml
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
The 8xx inverts _PAGE_RW. Lets to it in PTE accessors. Signed-off-by: Christophe Leroy <redacted> --- 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