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s390/boot: avoid potential amode31 truncation
author
Vasily Gorbik
<gor@linux.ibm.com>
Thu, 2 Feb 2023 18:22:35 +0000
(19:22 +0100)
committer
Heiko Carstens
<hca@linux.ibm.com>
Mon, 6 Feb 2023 10:13:55 +0000
(11:13 +0100)
Fixes:
bb1520d581a3
("s390/mm: start kernel with DAT enabled")
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>
arch/s390/boot/startup.c
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diff --git
a/arch/s390/boot/startup.c
b/arch/s390/boot/startup.c
index e7e2de386e24e623a2ef294c0aabc68794be86d7..f5a7545d3c13db091f1f87f42c7c289d2d9941d4 100644
(file)
--- a/
arch/s390/boot/startup.c
+++ b/
arch/s390/boot/startup.c
@@
-271,7
+271,7
@@
static void offset_vmlinux_info(unsigned long offset)
static unsigned long reserve_amode31(unsigned long safe_addr)
{
__amode31_base = PAGE_ALIGN(safe_addr);
- return
safe_addr
+ vmlinux.amode31_size;
+ return
__amode31_base
+ vmlinux.amode31_size;
}
void startup_kernel(void)