v2->v1: fix typo.
Tong Tiangen (2): uce: cow scenario support kernel recovery uce: pagecache reading scenario support kernel recovery
arch/arm64/Kconfig | 10 + arch/arm64/include/asm/exception.h | 12 ++ arch/arm64/include/asm/page.h | 8 + arch/arm64/include/asm/thread_info.h | 8 + arch/arm64/include/asm/uaccess.h | 8 + arch/arm64/kernel/ras.c | 7 + arch/arm64/lib/copy_page.S | 78 ++++++++ arch/arm64/lib/copy_template_generic_read.S | 193 ++++++++++++++++++++ arch/arm64/lib/copy_to_user.S | 19 ++ arch/arm64/mm/copypage.c | 14 ++ arch/arm64/mm/fault.c | 160 ++++++++++++++++ include/linux/highmem.h | 17 ++ include/linux/kernel.h | 4 + include/linux/mm.h | 3 + include/linux/uio.h | 5 + kernel/sysctl.c | 13 ++ lib/iov_iter.c | 132 +++++++++++++ mm/filemap.c | 8 +- mm/internal.h | 6 + mm/memory-failure.c | 7 + mm/memory.c | 8 + 21 files changed, 719 insertions(+), 1 deletion(-) create mode 100644 arch/arm64/lib/copy_template_generic_read.S