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arm64: ptdump: Indicate whether memory should be faulting

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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>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit d7e9d59494a9a5d83274f5af2148b82ca22dff3f)
Signed-off-by: Alex Shi <alex.shi@linaro.org>
This commit is contained in:
Laura Abbott 2016-02-05 16:24:48 -08:00 • committed by Alex Shi
parent e4d0298cdf
commit 5ca7d16080
1 changed files with 5 additions and 0 deletions
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5
arch/arm64/mm/dump.c
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@ -90,6 +90,11 @@ struct prot_bits {
static const struct prot_bits pte_bits[] = { static const struct prot_bits pte_bits[] = {
{ {
.mask = PTE_VALID,
.val = PTE_VALID,
.set = " ",
.clear = "F",
}, {
.mask = PTE_USER, .mask = PTE_USER,
.val = PTE_USER, .val = PTE_USER,
.set = "USR", .set = "USR",