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ARM: 8167/1: extend the reserved memory for initrd to be page aligned 

This patch extends the start and end address of initrd to be page aligned,
so that we can free all memory including the un-page aligned head or tail
page of initrd, if the start or end address of initrd are not page
aligned, the page can't be freed by free_initrd_mem() function.

Signed-off-by: Yalin Wang <yalin.wang@sonymobile.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
wifi-calibration
Yalin Wang 2014-09-26 03:07:09 +01:00 committed by Russell King
parent 562c85cadb
commit 421520ba98
2 changed files with 12 additions and 1 deletions
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5
arch/arm/mm/init.c
View File

@ -636,6 +636,11 @@ static int keep_initrd;
void free_initrd_mem(unsigned long start, unsigned long end)
{
if (!keep_initrd) {
if (start == initrd_start)
start = round_down(start, PAGE_SIZE);
if (end == initrd_end)
end = round_up(end, PAGE_SIZE);
poison_init_mem((void *)start, PAGE_ALIGN(end) - start);
free_reserved_area((void *)start, (void *)end, -1, "initrd");
}

8
arch/arm64/mm/init.c
View File

@ -334,8 +334,14 @@ static int keep_initrd;
void free_initrd_mem(unsigned long start, unsigned long end)
{
if (!keep_initrd)
if (!keep_initrd) {
if (start == initrd_start)
start = round_down(start, PAGE_SIZE);
if (end == initrd_end)
end = round_up(end, PAGE_SIZE);
free_reserved_area((void *)start, (void *)end, 0, "initrd");
}
}
static int __init keepinitrd_setup(char *__unused)