diff options
| author | Tang Chen <tangchen@cn.fujitsu.com> | 2013-02-22 16:33:06 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-02-23 17:50:12 -0800 |
| commit | bbcab8789d4a5b942773aa7496794ceebe2d3f78 (patch) | |
| tree | a57c8765ccd0e336ce423249f186c8603abdc9e3 /arch/x86/mm/init_64.c | |
| parent | ae9aae9eda2db71bf4b592f15618b0160eb07731 (diff) | |
memory-hotplug: remove page table of x86_64 architecture
Search a page table about the removed memory, and clear page table for
x86_64 architecture.
[akpm@linux-foundation.org: make kernel_physical_mapping_remove() static]
Signed-off-by: Wen Congyang <wency@cn.fujitsu.com>
Signed-off-by: Jianguo Wu <wujianguo@huawei.com>
Signed-off-by: Jiang Liu <jiang.liu@huawei.com>
Signed-off-by: Tang Chen <tangchen@cn.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Kamezawa Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Cc: Wu Jianguo <wujianguo@huawei.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/mm/init_64.c')
| -rw-r--r-- | arch/x86/mm/init_64.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c index ca6cd403a27..4e58b83e6b2 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -1011,6 +1011,15 @@ remove_pagetable(unsigned long start, unsigned long end, bool direct) flush_tlb_all(); } +static void __meminit +kernel_physical_mapping_remove(unsigned long start, unsigned long end) +{ + start = (unsigned long)__va(start); + end = (unsigned long)__va(end); + + remove_pagetable(start, end, true); +} + #ifdef CONFIG_MEMORY_HOTREMOVE int __ref arch_remove_memory(u64 start, u64 size) { @@ -1020,6 +1029,7 @@ int __ref arch_remove_memory(u64 start, u64 size) int ret; zone = page_zone(pfn_to_page(start_pfn)); + kernel_physical_mapping_remove(start, start + size); ret = __remove_pages(zone, start_pfn, nr_pages); WARN_ON_ONCE(ret); |