* [PATCH] ARM: ux500: Enable HIGHMEM in the u8540 defconfig
@ 2013-05-31 15:09 Lee Jones
2013-06-04 9:19 ` Linus Walleij
0 siblings, 1 reply; 2+ messages in thread
From: Lee Jones @ 2013-05-31 15:09 UTC (permalink / raw)
To: linux-arm-kernel
In order to utilise all of the memory located on ux500 based devices
we have to enable HIGHMEM. Without it the kernel truncates memory down
to what's left after the PAGE_OFFSET has been applied, which doesn't
leave an awful lot, especially if we're running large rootfs' such
as full Linux desktop distributions or Android.
Signed-off-by: Lee Jones <lee.jones@linaro.org>
---
arch/arm/configs/u8500_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/configs/u8500_defconfig b/arch/arm/configs/u8500_defconfig
index 2d322d2..38d633a 100644
--- a/arch/arm/configs/u8500_defconfig
+++ b/arch/arm/configs/u8500_defconfig
@@ -1,3 +1,4 @@
+CONFIG_HIGHMEM=y
# CONFIG_SWAP is not set
CONFIG_SYSVIPC=y
CONFIG_NO_HZ=y
--
1.7.10.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* [PATCH] ARM: ux500: Enable HIGHMEM in the u8540 defconfig
2013-05-31 15:09 [PATCH] ARM: ux500: Enable HIGHMEM in the u8540 defconfig Lee Jones
@ 2013-06-04 9:19 ` Linus Walleij
0 siblings, 0 replies; 2+ messages in thread
From: Linus Walleij @ 2013-06-04 9:19 UTC (permalink / raw)
To: linux-arm-kernel
On Fri, May 31, 2013 at 5:09 PM, Lee Jones <lee.jones@linaro.org> wrote:
> In order to utilise all of the memory located on ux500 based devices
> we have to enable HIGHMEM. Without it the kernel truncates memory down
> to what's left after the PAGE_OFFSET has been applied, which doesn't
> leave an awful lot, especially if we're running large rootfs' such
> as full Linux desktop distributions or Android.
>
> Signed-off-by: Lee Jones <lee.jones@linaro.org>
Patch applied, but I renamed the topic arch to u8500
as the defconfig is named as such.
Yours,
Linus Walleij
^ permalink raw reply [flat|nested] 2+ messages in thread
end of thread, other threads:[~2013-06-04 9:19 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2013-05-31 15:09 [PATCH] ARM: ux500: Enable HIGHMEM in the u8540 defconfig Lee Jones
2013-06-04 9:19 ` Linus Walleij
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).