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proc/vmcore: Fix i386 build error of missing copy_oldmem_page_encrypted()
[ Upstream commit cf089611f4
]
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>
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1 changed files with 10 additions and 0 deletions
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@ -164,6 +164,16 @@ int __weak remap_oldmem_pfn_range(struct vm_area_struct *vma,
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return remap_pfn_range(vma, from, pfn, size, prot);
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}
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/*
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* Architectures which support memory encryption override this.
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*/
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ssize_t __weak
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copy_oldmem_page_encrypted(unsigned long pfn, char *buf, size_t csize,
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unsigned long offset, int userbuf)
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{
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return copy_oldmem_page(pfn, buf, csize, offset, userbuf);
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}
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/*
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* Copy to either kernel or user space
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*/
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