Subject: + x86-acpi-crash-kdump-do-reserve_crashkernel-after-srat-is-parsed.patch added to -mm tree
To: tangchen@xxxxxxxxxxxxxx,hannes@xxxxxxxxxxx,hpa@xxxxxxxxx,isimatu.yasuaki@xxxxxxxxxxxxxx,izumi.taku@xxxxxxxxxxxxxx,jiang.liu@xxxxxxxxxx,kamezawa.hiroyu@xxxxxxxxxxxxxx,laijs@xxxxxxxxxxxxxx,lenb@xxxxxxxxxx,liwanp@xxxxxxxxxxxxxxxxxx,mgorman@xxxxxxx,mina86@xxxxxxxxxx,minchan@xxxxxxxxxx,mingo@xxxxxxx,riel@xxxxxxxxxx,rjw@xxxxxxx,tglx@xxxxxxxxxxxxx,tj@xxxxxxxxxx,toshi.kani@xxxxxx,trenn@xxxxxxx,wency@xxxxxxxxxxxxxx,yinghai@xxxxxxxxxx,zhangyanfei@xxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Wed, 25 Sep 2013 17:05:28 -0700
The patch titled
Subject: x86, acpi, crash, kdump: do reserve_crashkernel() after SRAT is parsed
has been added to the -mm tree. Its filename is
x86-acpi-crash-kdump-do-reserve_crashkernel-after-srat-is-parsed.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/x86-acpi-crash-kdump-do-reserve_crashkernel-after-srat-is-parsed.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/x86-acpi-crash-kdump-do-reserve_crashkernel-after-srat-is-parsed.patch
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------------------------------------------------------
From: Tang Chen <tangchen@xxxxxxxxxxxxxx>
Subject: x86, acpi, crash, kdump: do reserve_crashkernel() after SRAT is parsed
Memory reserved for crashkernel could be large. So we should not allocate
this memory bottom up from the end of kernel image.
When SRAT is parsed, we will be able to know which memory is hotpluggable,
and we can avoid allocating this memory for the kernel. So reorder
reserve_crashkernel() after SRAT is parsed.
Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx>
Reviewed-by: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: "Rafael J . Wysocki" <rjw@xxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Cc: Len Brown <lenb@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Michal Nazarewicz <mina86@xxxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Taku Izumi <izumi.taku@xxxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Thomas Renninger <trenn@xxxxxxx>
Cc: Toshi Kani <toshi.kani@xxxxxx>
Cc: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
Cc: Wen Congyang <wency@xxxxxxxxxxxxxx>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/setup.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff -puN arch/x86/kernel/setup.c~x86-acpi-crash-kdump-do-reserve_crashkernel-after-srat-is-parsed arch/x86/kernel/setup.c
--- a/arch/x86/kernel/setup.c~x86-acpi-crash-kdump-do-reserve_crashkernel-after-srat-is-parsed
+++ a/arch/x86/kernel/setup.c
@@ -1120,8 +1120,6 @@ void __init setup_arch(char **cmdline_p)
acpi_initrd_override((void *)initrd_start, initrd_end - initrd_start);
#endif
- reserve_crashkernel();
-
vsmp_init();
io_delay_init();
@@ -1136,6 +1134,12 @@ void __init setup_arch(char **cmdline_p)
initmem_init();
memblock_find_dma_reserve();
+ /*
+ * Reserve memory for crash kernel after SRAT is parsed so that it
+ * won't consume hotpluggable memory.
+ */
+ reserve_crashkernel();
+
#ifdef CONFIG_KVM_GUEST
kvmclock_init();
#endif
_
Patches currently in -mm which might be from tangchen@xxxxxxxxxxxxxx are
memblock-factor-out-of-top-down-allocation.patch
memblock-introduce-bottom-up-allocation-mode.patch
x86-mm-factor-out-of-top-down-direct-mapping-setup.patch
x86-mem-hotplug-support-initialize-page-tables-in-bottom-up.patch
x86-acpi-crash-kdump-do-reserve_crashkernel-after-srat-is-parsed.patch
mem-hotplug-introduce-movablenode-boot-option.patch
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