[PATCHv4 3/3] arm64: ptdump: Indicate whether memory should be faulting

From	Laura Abbott <labbott@fedoraproject.org>
Newsgroups	linux.kernel
Subject	[PATCHv4 3/3] arm64: ptdump: Indicate whether memory should be faulting
Date	2016-02-06 01:30 +0100
Message-ID	<qYYVc-7EH-5@gated-at.bofh.it> (permalink)
References	<qYYVb-7EH-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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With CONFIG_DEBUG_PAGEALLOC, pages do not have the valid bit
set when free in the buddy allocator. Add an indiciation to
the page table dumping code that the valid bit is not set,
'F' for fault, to make this easier to understand.

Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Laura Abbott <labbott@fedoraproject.org>
---
 arch/arm64/mm/dump.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/arch/arm64/mm/dump.c b/arch/arm64/mm/dump.c
index 5a22a11..f381ac9 100644
--- a/arch/arm64/mm/dump.c
+++ b/arch/arm64/mm/dump.c
@@ -90,6 +90,11 @@ struct prot_bits {
 
 static const struct prot_bits pte_bits[] = {
 	{
+		.mask	= PTE_VALID,
+		.val	= PTE_VALID,
+		.set	= " ",
+		.clear	= "F",
+	}, {
 		.mask	= PTE_USER,
 		.val	= PTE_USER,
 		.set	= "USR",
-- 
2.5.0

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[PATCHv4 3/3] arm64: ptdump: Indicate whether memory should be faulting Laura Abbott <labbott@fedoraproject.org> - 2016-02-06 01:30 +0100

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