Hi Support for unaccepted memory was added recently, refer commit dcdfdd40fa82 ("mm: Add support for unaccepted memory"), whereby a virtual machine may need to accept memory before it can be used. Plug a few gaps where RAM is exposed without checking if it is unaccepted memory. Changes in V2: efi/unaccepted: Do not let /proc/vmcore try to access unaccepted memory Change patch subject and commit message Use vmcore_cb->.pfn_is_ram() instead of changing vmcore.c proc/kcore: Do not try to access unaccepted memory Change patch subject and commit message Do not open code pfn_is_unaccepted_memory() /dev/mem: Do not map unaccepted memory Patch dropped because it is not required Adrian Hunter (2): efi/unaccepted: Do not let /proc/vmcore try to access unaccepted memory proc/kcore: Do not try to access unaccepted memory drivers/firmware/efi/unaccepted_memory.c | 20 ++++++++++++++++++++ fs/proc/kcore.c | 3 ++- include/linux/mm.h | 7 +++++++ 3 files changed, 29 insertions(+), 1 deletion(-) Regards Adrian