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proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted()

Browse source 
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 <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
CC: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
This commit is contained in:
Borislav Petkov 2018-10-08 10:05:20 +02:00
commit cf089611f4
1 changed files with 10 additions and 0 deletions
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10
fs/proc/vmcore.c
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@ -187,6 +187,16 @@ int __weak remap_oldmem_pfn_range(struct vm_area_struct *vma,
return remap_pfn_range(vma, from, pfn, size, prot);
}
/*
* 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
*/