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

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;