The quilt patch titled Subject: mm/memremap.c: map FS_DAX device memory as decrypted has been removed from the -mm tree. Its filename was mm-memremapc-map-fs_dax-device-memory-as-decrypted.patch

This patch was dropped because it was merged into the mm-hotfixes-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------ From: Pankaj Gupta pankaj.gupta@amd.com Subject: mm/memremap.c: map FS_DAX device memory as decrypted Date: Wed, 2 Nov 2022 11:07:28 -0500

virtio_pmem use devm_memremap_pages() to map the device memory. By default this memory is mapped as encrypted with SEV. Guest reboot changes the current encryption key and guest no longer properly decrypts the FSDAX device meta data.

Mark the corresponding device memory region for FSDAX devices (mapped with memremap_pages) as decrypted to retain the persistent memory property.

Link: https://lkml.kernel.org/r/20221102160728.3184016-1-pankaj.gupta@amd.com Fixes: b7b3c01b19159 ("mm/memremap_pages: support multiple ranges per invocation") Signed-off-by: Pankaj Gupta pankaj.gupta@amd.com Cc: Dan Williams dan.j.williams@intel.com Cc: Tom Lendacky thomas.lendacky@amd.com Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---

mm/memremap.c | 1 + 1 file changed, 1 insertion(+)

--- a/mm/memremap.c~mm-memremapc-map-fs_dax-device-memory-as-decrypted +++ a/mm/memremap.c @@ -335,6 +335,7 @@ void *memremap_pages(struct dev_pagemap WARN(1, "File system DAX not supported\n"); return ERR_PTR(-EINVAL); } + params.pgprot = pgprot_decrypted(params.pgprot); break; case MEMORY_DEVICE_GENERIC: break; _

Patches currently in -mm which might be from pankaj.gupta@amd.com are