From: Christophe Leroy <christophe.leroy@c-s.fr>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Paul Mackerras <paulus@samba.org>,
Michael Ellerman <mpe@ellerman.id.au>,
scottwood@freescale.com
Cc: linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org
Subject: [PATCH 4/4] powerpc32/8xx: invert _PAGE_RW bit in PTE accessors
Date: Wed, 10 Dec 2014 19:00:46 +0100 (CET) [thread overview]
Message-ID: <20141210180046.9A8FA1A5D62@localhost.localdomain> (raw)
The 8xx inverts _PAGE_RW. Lets to it in PTE accessors.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.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
reply other threads:[~2014-12-10 18:01 UTC|newest]
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