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,liwanp@xxxxxxxxxxxxxxxxxx,mgorman@xxxxxxx,mina86@xxxxxxxxxx,minchan@xxxxxxxxxx,mingo@xxxxxxx,riel@xxxxxxxxxx,tglx@xxxxxxxxxxxxx,tj@xxxxxxxxxx,toshi.kani@xxxxxx,trenn@xxxxxxx,wency@xxxxxxxxxxxxxx,yinghai@xxxxxxxxxx,zhangyanfei@xxxxxxxxxxxxxx
From: akpm@xxxxxxxxxxxxxxxxxxxx
Date: Fri, 11 Oct 2013 13:39:14 -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>
Signed-off-by: Zhang Yanfei <zhangyanfei@xxxxxxxxxxxxxx>
Acked-by: Tejun Heo <tj@xxxxxxxxxx>
Acked-by: Toshi Kani <toshi.kani@xxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxx>
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
Cc: Wanpeng Li <liwanp@xxxxxxxxxxxxxxxxxx>
Cc: Thomas Renninger <trenn@xxxxxxx>
Cc: Yinghai Lu <yinghai@xxxxxxxxxx>
Cc: Jiang Liu <jiang.liu@xxxxxxxxxx>
Cc: Wen Congyang <wency@xxxxxxxxxxxxxx>
Cc: Lai Jiangshan <laijs@xxxxxxxxxxxxxx>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx>
Cc: Taku Izumi <izumi.taku@xxxxxxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Michal Nazarewicz <mina86@xxxxxxxxxx
Cc: Minchan Kim <minchan@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/setup.c | 9 +++++++--
1 file changed, 7 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();
@@ -1134,6 +1132,13 @@ void __init setup_arch(char **cmdline_p)
early_acpi_boot_init();
initmem_init();
+
+ /*
+ * Reserve memory for crash kernel after SRAT is parsed so that it
+ * won't consume hotpluggable memory.
+ */
+ reserve_crashkernel();
+
memblock_find_dma_reserve();
#ifdef CONFIG_KVM_GUEST
_
Patches currently in -mm which might be from tangchen@xxxxxxxxxxxxxx are
mm-sparsemem-use-pages_per_section-to-remove-redundant-nr_pages-parameter.patch
mm-sparsemem-fix-a-bug-in-free_map_bootmem-when-config_sparsemem_vmemmap.patch
mm-sparsemem-fix-a-bug-in-free_map_bootmem-when-config_sparsemem_vmemmap-v2.patch
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-movable_node-boot-option.patch
linux-next.patch
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