Commit 45d90b93 authored Oct 08, 2018 by Borislav Petkov Committed by Greg Kroah-Hartman Nov 25, 2019

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



[ 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>

parent d17a2b73

fs/proc/vmcore.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -164,6 +164,16 @@ 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
		*/