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| author | Linus Walleij <linus.walleij@linaro.org> | 2011-09-29 12:37:23 +0400 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2011-10-01 20:49:18 +0400 |
| commit | 002ea9eefec98dada56fd5f8e432a4e8570c2a26 (patch) | |
| tree | d97e36ac8ad876269cd26d28c0d368c0ec35c75e /arch/arm/mm | |
| parent | 47ea91b4052d9e94b9dca5d7a3d947fbebd07ba9 (diff) | |
| download | linux-002ea9eefec98dada56fd5f8e432a4e8570c2a26.tar.xz | |
ARM: 7113/1: mm: Align bank start to MAX_ORDER_NR_PAGES
The VM subsystem assumes that there are valid memmap entries from
the bank start aligned to MAX_ORDER_NR_PAGES.
On the Ux500 we have a lot of mem=N arguments on the commandline
triggering this bug several times over and causing kernel
oops messages.
Cc: stable@kernel.org
Cc: Michael Bohan <mbohan@codeaurora.org>
Cc: Nicolas Pitre <nico@fluxnic.net>
Signed-off-by: Johan Palsson <johan.palsson@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mm')
| -rw-r--r-- | arch/arm/mm/init.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c index cc7e2d8be9aa..f8037ba338ac 100644 --- a/arch/arm/mm/init.c +++ b/arch/arm/mm/init.c @@ -496,6 +496,13 @@ static void __init free_unused_memmap(struct meminfo *mi) */ bank_start = min(bank_start, ALIGN(prev_bank_end, PAGES_PER_SECTION)); +#else + /* + * Align down here since the VM subsystem insists that the + * memmap entries are valid from the bank start aligned to + * MAX_ORDER_NR_PAGES. + */ + bank_start = round_down(bank_start, MAX_ORDER_NR_PAGES); #endif /* * If we had a previous bank, and there is a space |