Messages in this thread Patch in this message | | | From | Tang Chen <> | Subject | [PATCH v5 09/14] memory-hotplug: remove page table of x86_64 architecture | Date | Mon, 24 Dec 2012 20:09:19 +0800 |
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This patch searches a page table about the removed memory, and clear page table for x86_64 architecture.
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> --- 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 b30df3c..4b160d8 100644 --- a/arch/x86/mm/init_64.c +++ b/arch/x86/mm/init_64.c @@ -979,6 +979,15 @@ remove_pagetable(unsigned long start, unsigned long end, bool direct) flush_tlb_all(); } +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) { @@ -988,6 +997,7 @@ 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); -- 1.7.1
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