This is a note to let you know that I've just added the patch titled
MIPS: Reserve nosave data for hibernation
to the 4.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
mips-reserve-nosave-data-for-hibernation.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From a95d069204e178f18476f5499abab0d0d9cbc32c Mon Sep 17 00:00:00 2001
From: Huacai Chen <chenhc@xxxxxxxxxx>
Date: Thu, 17 Mar 2016 20:37:10 +0800
Subject: MIPS: Reserve nosave data for hibernation
From: Huacai Chen <chenhc@xxxxxxxxxx>
commit a95d069204e178f18476f5499abab0d0d9cbc32c upstream.
After commit 92923ca3aacef63c92d ("mm: meminit: only set page reserved
in the memblock region"), the MIPS hibernation is broken. Because pages
in nosave data section should be "reserved", but currently they aren't
set to "reserved" at initialization. This patch makes hibernation work
again.
Signed-off-by: Huacai Chen <chenhc@xxxxxxxxxx>
Cc: Aurelien Jarno <aurelien@xxxxxxxxxxx>
Cc: Steven J . Hill <sjhill@xxxxxxxxxxxxxxxxxx>
Cc: Fuxin Zhang <zhangfx@xxxxxxxxxx>
Cc: Zhangjin Wu <wuzhangjin@xxxxxxxxx>
Cc: linux-mips@xxxxxxxxxxxxxx
Patchwork: https://patchwork.linux-mips.org/patch/12888/
Signed-off-by: Ralf Baechle <ralf@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/mips/kernel/setup.c | 3 +++
1 file changed, 3 insertions(+)
--- a/arch/mips/kernel/setup.c
+++ b/arch/mips/kernel/setup.c
@@ -706,6 +706,9 @@ static void __init arch_mem_init(char **
for_each_memblock(reserved, reg)
if (reg->size != 0)
reserve_bootmem(reg->base, reg->size, BOOTMEM_DEFAULT);
+
+ reserve_bootmem_region(__pa_symbol(&__nosave_begin),
+ __pa_symbol(&__nosave_end)); /* Reserve for hibernation */
}
static void __init resource_init(void)
Patches currently in stable-queue which might be from chenhc@xxxxxxxxxx are
queue-4.4/mips-reserve-nosave-data-for-hibernation.patch
queue-4.4/mips-loongson-3-reserve-32mb-for-rs780e-integrated-gpu.patch
queue-4.4/mips-sync-icache-dcache-in-set_pte_at.patch
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