[Hi Wen, Good news!! I was waiting for this patch to come. Applying the patches, can we hot-remove physical memory completely? Thanks, Yasuaki Ishimatsu 2012/07/20 16:06, Wen Congyang wrote:
This patch series aims to support physical memory hot-remove(clear page table). This patch series base on ishimatsu's patch series. You can get it here: http://www.spinics.net/lists/linux-acpi/msg36804.html The patches can remove following things: - page table of removed memory If you find lack of function for physical memory hot-remove, please let me know. Note: * The patch "remove memory info from list before freeing it" is being disccussed in other thread. But for testing the patch series, the patch is needed. So I added the patch as [PATCH 0/8]. * You need to apply ishimatsu's patch series first before applying this patch series. Wen Congyang (8): memory-hotplug: store the node id in acpi_memory_device memory-hotplug: offline memory only when it is onlined memory-hotplug: call remove_memory() to cleanup when removing memory device memory-hotplug: export the function acpi_bus_remove() memory-hotplug: call acpi_bus_remove() to remove memory device memory-hotplug: introduce new function arch_remove_memory() x86: make __split_large_page() generally avialable memory-hotplug: implement arch_remove_memory() arch/ia64/mm/init.c | 16 ++++ arch/powerpc/mm/mem.c | 14 +++ arch/s390/mm/init.c | 8 ++ arch/sh/mm/init.c | 15 +++ arch/tile/mm/init.c | 8 ++ arch/x86/include/asm/pgtable_types.h | 1 + arch/x86/mm/init_32.c | 10 ++ arch/x86/mm/init_64.c | 160 ++++++++++++++++++++++++++++++++++ arch/x86/mm/pageattr.c | 47 +++++----- drivers/acpi/acpi_memhotplug.c | 24 ++++-- drivers/acpi/scan.c | 3 +- include/acpi/acpi_bus.h | 1 + include/linux/memory_hotplug.h | 1 + mm/memory_hotplug.c | 2 +- 14 files changed, 280 insertions(+), 30 deletions(-)
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