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From: steve.capper@linaro.org (Steve Capper)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 2/3] ARM: mm: Make LPAE huge page ptes NG by default
Date: Tue, 19 Nov 2013 17:35:28 +0000	[thread overview]
Message-ID: <1384882529-28104-3-git-send-email-steve.capper@linaro.org> (raw)
In-Reply-To: <1384882529-28104-1-git-send-email-steve.capper@linaro.org>

We now don't set the NG bit as we write the huge page entry, so set it
on huge page entry creation. This simplifies code, and obviates the
need for us to override pte_same.

Signed-off-by: Steve Capper <steve.capper@linaro.org>
---
 arch/arm/include/asm/pgtable-3level.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 5689c18..d1318e1 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -199,7 +199,7 @@ static inline pmd_t *pmd_offset(pud_t *pud, unsigned long addr)
 #define set_pte_ext(ptep,pte,ext) cpu_set_pte_ext(ptep,__pte(pte_val(pte)|(ext)))
 
 #define pte_huge(pte)		(pte_val(pte) && !(pte_val(pte) & PTE_TABLE_BIT))
-#define pte_mkhuge(pte)		(__pte(pte_val(pte) & ~PTE_TABLE_BIT))
+#define pte_mkhuge(pte)		(__pte((pte_val(pte) & ~PTE_TABLE_BIT) | PTE_EXT_NG))
 
 #define pmd_young(pmd)		(pmd_val(pmd) & PMD_SECT_AF)
 
-- 
1.8.1.4

  parent reply	other threads:[~2013-11-19 17:35 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-11-19 17:35 [PATCH 0/3] Simplify set_huge_pte_at, pte_same for LPAE Steve Capper
2013-11-19 17:35 ` [PATCH 1/3] ARM: mm: Rewire LPAE set_huge_pte_at Steve Capper
2013-11-19 17:35 ` Steve Capper [this message]
2013-11-19 17:35 ` [PATCH 3/3] Revert "ARM: mm: correct pte_same behaviour for LPAE." Steve Capper
2013-11-19 18:02 ` [PATCH 0/3] Simplify set_huge_pte_at, pte_same for LPAE Christoffer Dall
2013-12-03 13:46 ` Steve Capper
2013-12-03 15:09   ` Catalin Marinas

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