From: Jeremy Linton <jeremy.linton@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: catalin.marinas@arm.com, will.deacon@arm.com,
linux-kernel@vger.kernel.org, dwoods@ezcip.com,
steve.capper@arm.com, shijie.huang@arm.com,
Jeremy Linton <jeremy.linton@arm.com>
Subject: [PATCH 5/7] arm64: Default kernel pages should be contiguous
Date: Wed, 16 Sep 2015 14:03:04 -0500 [thread overview]
Message-ID: <1442430186-9083-6-git-send-email-jeremy.linton@arm.com> (raw)
In-Reply-To: <1442430186-9083-1-git-send-email-jeremy.linton@arm.com>
The default page attributes for a PMD being broken should have the CONT bit
set. Create a new definition for an early boot range of PTE's that are
contiguous.
Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
---
arch/arm64/include/asm/pgtable.h | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index d43e1d1..252499e 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -76,6 +76,8 @@ extern void __pgd_error(const char *file, int line, unsigned long val);
#define PAGE_KERNEL __pgprot(_PAGE_DEFAULT | PTE_PXN | PTE_UXN | PTE_DIRTY | PTE_WRITE)
#define PAGE_KERNEL_EXEC __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | PTE_WRITE)
+#define PAGE_KERNEL_EXEC_CONT __pgprot(_PAGE_DEFAULT | PTE_UXN | PTE_DIRTY | \
+ PTE_WRITE | PTE_CONT)
#define PAGE_HYP __pgprot(_PAGE_DEFAULT | PTE_HYP)
#define PAGE_HYP_DEVICE __pgprot(PROT_DEVICE_nGnRE | PTE_HYP)
--
2.4.3
next prev parent reply other threads:[~2015-09-16 19:03 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-16 19:02 [PATCH 0/7] arm64: Use contigous PTE bit for the kernel linear mapping Jeremy Linton
2015-09-16 19:03 ` [PATCH 1/7] arm64: Add contiguous page flag shifts and constants Jeremy Linton
2015-09-16 19:03 ` [PATCH 2/7] arm64: Shorten lines which exceed 80 characters Jeremy Linton
2015-09-17 9:45 ` Catalin Marinas
2015-09-16 19:03 ` [PATCH 3/7] arm64: PTE/PMD contiguous bit definition Jeremy Linton
2015-09-16 19:03 ` [PATCH 4/7] arm64: Macros to check/set/unset the contiguous bit Jeremy Linton
2015-09-16 19:03 ` Jeremy Linton [this message]
2015-09-16 19:03 ` [PATCH 6/7] arm64: Make the kernel page dump utility aware of the CONT bit Jeremy Linton
2015-09-18 7:02 ` Huang Shijie
2015-09-18 8:35 ` Huang Shijie
2015-09-16 19:03 ` [PATCH 7/7] arm64: Mark kernel page ranges contiguous Jeremy Linton
2015-09-17 17:23 ` Steve Capper
2015-09-17 17:33 ` Jeremy Linton
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