From: Ard Biesheuvel <ardb@kernel.org>
Date: Thu, 2 Feb 2023 17:30:06 +0000 (+0100)
Subject: efi: Accept version 2 of memory attributes table
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=636ab417a7aec4ee993916e688eb5c5977570836;p=linux.git

efi: Accept version 2 of memory attributes table

UEFI v2.10 introduces version 2 of the memory attributes table, which
turns the reserved field into a flags field, but is compatible with
version 1 in all other respects. So let's not complain about version 2
if we encounter it.

Cc: <stable@vger.kernel.org>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---

diff --git a/drivers/firmware/efi/memattr.c b/drivers/firmware/efi/memattr.c
index 0a9aba5f9ceff..f178b2984dfb2 100644
--- a/drivers/firmware/efi/memattr.c
+++ b/drivers/firmware/efi/memattr.c
@@ -33,7 +33,7 @@ int __init efi_memattr_init(void)
 		return -ENOMEM;
 	}
 
-	if (tbl->version > 1) {
+	if (tbl->version > 2) {
 		pr_warn("Unexpected EFI Memory Attributes table version %d\n",
 			tbl->version);
 		goto unmap;