Hi Mike, On Tue, Apr 14, 2020 at 07:03:44PM +0000, Mike Stunes wrote: > set_memory_decrypted needs to check the return value. I see it > consistently return ENOMEM. I've traced that back to split_large_page > in arch/x86/mm/pat/set_memory.c. I agree that the return code needs to be checked. But I wonder why this happens. The split_large_page() function returns -ENOMEM when alloc_pages() fails. Do you boot the guest with minal RAM assigned? Regards, Joerg