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arm64: Make the kernel page dump utility aware of the CONT bit

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The kernel page dump utility needs to be aware of the CONT bit before
it will break up pages ranges for display.

Signed-off-by: Jeremy Linton <jeremy.linton@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
Jeremy Linton 2015-10-07 12:00:23 -05:00 committed by Catalin Marinas
parent 06f90d2527
commit 202e41a1c2
1 changed files with 17 additions and 1 deletions
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18
arch/arm64/mm/dump.c
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@ -67,6 +67,12 @@ static struct addr_marker address_markers[] = {
{ -1, NULL },
};
/*
* The page dumper groups page table entries of the same type into a single
* description. It uses pg_state to track the range information while
* iterating over the pte entries. When the continuity is broken it then
* dumps out a description of the range.
*/
struct pg_state {
struct seq_file *seq;
const struct addr_marker *marker;
@ -113,6 +119,16 @@ static const struct prot_bits pte_bits[] = {
.val = PTE_NG,
.set = "NG",
.clear = " ",
}, {
.mask = PTE_CONT,
.val = PTE_CONT,
.set = "CON",
.clear = " ",
}, {
.mask = PTE_TABLE_BIT,
.val = PTE_TABLE_BIT,
.set = " ",
.clear = "BLK",
}, {
.mask = PTE_UXN,
.val = PTE_UXN,
@ -198,7 +214,7 @@ static void note_page(struct pg_state *st, unsigned long addr, unsigned level,
unsigned long delta;
if (st->current_prot) {
seq_printf(st->seq, "0x%16lx-0x%16lx ",
seq_printf(st->seq, "0x%016lx-0x%016lx ",
st->start_address, addr);
delta = (addr - st->start_address) >> 10;