From: Vasily Gorbik <gor@linux.ibm.com>
Date: Tue, 14 Feb 2023 08:39:24 +0000 (+0100)
Subject: s390/mm,pageattr: allow KASAN shadow memory
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=e4c31004d3348202d4bc0bcdf662bf9d9d3e11cb;p=linux.git

s390/mm,pageattr: allow KASAN shadow memory

Allow changing page table attributes for KASAN shadow memory ranges.

Acked-by: Heiko Carstens <hca@linux.ibm.com>
Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---

diff --git a/arch/s390/mm/pageattr.c b/arch/s390/mm/pageattr.c
index 85195c18b2e82..7838e9c70000b 100644
--- a/arch/s390/mm/pageattr.c
+++ b/arch/s390/mm/pageattr.c
@@ -300,8 +300,6 @@ static int change_page_attr(unsigned long addr, unsigned long end,
 
 	if (addr == end)
 		return 0;
-	if (end >= MODULES_END)
-		return -EINVAL;
 	mutex_lock(&cpa_mutex);
 	pgdp = pgd_offset_k(addr);
 	do {