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proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted()
author
Borislav Petkov
<bp@suse.de>
Mon, 8 Oct 2018 08:05:20 +0000
(10:05 +0200)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Mon, 25 Nov 2019 14:54:47 +0000
(15:54 +0100)
[ Upstream commit
cf089611f4c446285046fcd426d90c18f37d2905
]
Lianbo reported a build error with a particular 32-bit config, see Link
below for details.
Provide a weak copy_oldmem_page_encrypted() function which architectures
can override, in the same manner other functionality in that file is
supplied.
Reported-by: Lianbo Jiang <lijiang@redhat.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
CC: x86@kernel.org
Link:
http://lkml.kernel.org/r/710b9d95-2f70-eadf-c4a1-c3dc80ee4ebb@redhat.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
fs/proc/vmcore.c
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diff --git
a/fs/proc/vmcore.c
b/fs/proc/vmcore.c
index
4e61388
..
0814313
100644
(file)
--- a/
fs/proc/vmcore.c
+++ b/
fs/proc/vmcore.c
@@
-165,6
+165,16
@@
int __weak remap_oldmem_pfn_range(struct vm_area_struct *vma,
}
/*
+ * Architectures which support memory encryption override this.
+ */
+ssize_t __weak
+copy_oldmem_page_encrypted(unsigned long pfn, char *buf, size_t csize,
+ unsigned long offset, int userbuf)
+{
+ return copy_oldmem_page(pfn, buf, csize, offset, userbuf);
+}
+
+/*
* Copy to either kernel or user space
*/
static int copy_to(void *target, void *src, size_t size, int userbuf)