Here are some bug fix patches for physical memory hot-remove. All these patches are based on the latest -mm tree. git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git akpm And patch1 and patch3 are very important. patch1: free compound pages when freeing memmap, otherwise the kernel will panic the next time memory is hot-added. patch3: the old way of freeing pagetable pages was wrong. We should never split larger pages into small ones. Lai Jiangshan (1): Bug-fix: mempolicy: fix is_valid_nodemask() Tang Chen (3): Bug fix: Do not split pages when freeing pagetable pages. Bug fix: Fix section mismatch problem of release_firmware_map_entry(). Bug fix: Fix the doc format in drivers/firmware/memmap.c Wen Congyang (1): Bug fix: consider compound pages when free memmap arch/x86/mm/init_64.c | 148 ++++++++++++++------------------------------- drivers/firmware/memmap.c | 16 +++--- mm/mempolicy.c | 36 +++++++---- mm/sparse.c | 2 +- 4 files changed, 77 insertions(+), 125 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html