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From: Matt Fleming <matt@console-pimps.org>
To: linux-sh@vger.kernel.org
Subject: [PATCH 1/2] sh: Flush ITLB too in PTEAEX's flush_tlb_page()
Date: Sun, 21 Mar 2010 19:51:43 +0000	[thread overview]
Message-ID: <1269201103-28283-1-git-send-email-matt@console-pimps.org> (raw)

flush_tlb_page() can be used to flush TLB entries that map executable
pages. Therefore, we need to ensure that the ITLB is also flushed in
local_flush_tlb_page().

Signed-off-by: Matt Fleming <matt@console-pimps.org>
---
 arch/sh/include/cpu-sh4/cpu/mmu_context.h |    2 ++
 arch/sh/mm/tlb-pteaex.c                   |    2 ++
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/arch/sh/include/cpu-sh4/cpu/mmu_context.h b/arch/sh/include/cpu-sh4/cpu/mmu_context.h
index 03ea75c..310ec92 100644
--- a/arch/sh/include/cpu-sh4/cpu/mmu_context.h
+++ b/arch/sh/include/cpu-sh4/cpu/mmu_context.h
@@ -19,6 +19,8 @@
 
 #define MMUCR		0xFF000010	/* MMU Control Register */
 
+#define MMU_ITLB_ADDRESS_ARRAY  0xF2000000
+#define MMU_ITLB_ADDRESS_ARRAY2	0xF2800000
 #define MMU_UTLB_ADDRESS_ARRAY	0xF6000000
 #define MMU_UTLB_ADDRESS_ARRAY2	0xF6800000
 #define MMU_PAGE_ASSOC_BIT	0x80
diff --git a/arch/sh/mm/tlb-pteaex.c b/arch/sh/mm/tlb-pteaex.c
index 32dc674..bdd0982 100644
--- a/arch/sh/mm/tlb-pteaex.c
+++ b/arch/sh/mm/tlb-pteaex.c
@@ -73,5 +73,7 @@ void local_flush_tlb_one(unsigned long asid, unsigned long page)
 	jump_to_uncached();
 	__raw_writel(page, MMU_UTLB_ADDRESS_ARRAY | MMU_PAGE_ASSOC_BIT);
 	__raw_writel(asid, MMU_UTLB_ADDRESS_ARRAY2 | MMU_PAGE_ASSOC_BIT);
+	__raw_writel(page, MMU_ITLB_ADDRESS_ARRAY | MMU_PAGE_ASSOC_BIT);
+	__raw_writel(asid, MMU_ITLB_ADDRESS_ARRAY2 | MMU_PAGE_ASSOC_BIT);
 	back_to_cached();
 }
-- 
1.6.4.rc0


             reply	other threads:[~2010-03-21 19:51 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-21 19:51 Matt Fleming [this message]
2010-03-23  4:39 ` [PATCH 1/2] sh: Flush ITLB too in PTEAEX's flush_tlb_page() Paul Mundt

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