diff options
| author | Laura Abbott <labbott@redhat.com> | 2017-01-10 13:35:42 -0800 |
|---|---|---|
| committer | Mark Salyzyn <salyzyn@google.com> | 2017-11-20 13:50:07 -0800 |
| commit | b11250d2adedb7fc5965ff4ac410df40fb073f3a (patch) | |
| tree | f9eeb14d2aa4ac7a5eef5f37b35906903a48cd82 /include/linux/mm.h | |
| parent | 7eab308a49db1596e7dca26bbcaffdedf6818e9b (diff) | |
UPSTREAM: mm: Introduce lm_alias
(cherry-pick from commit 568c5fe5a54f2654f5a4c599c45b8a62ed9a2013)
Certain architectures may have the kernel image mapped separately to
alias the linear map. Introduce a macro lm_alias to translate a kernel
image symbol into its linear alias. This is used in part with work to
add CONFIG_DEBUG_VIRTUAL support for arm64.
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Tested-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Laura Abbott <labbott@redhat.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Bug: 20045882
Bug: 63737556
Change-Id: I93ba4ef8df77f7e52717ab6e208d06122ac3a72b
Diffstat (limited to 'include/linux/mm.h')
| -rw-r--r-- | include/linux/mm.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/mm.h b/include/linux/mm.h index e51aafbc4b3a..941c7f711ada 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -70,6 +70,10 @@ extern int mmap_rnd_compat_bits __read_mostly; #define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x), 0)) #endif +#ifndef lm_alias +#define lm_alias(x) __va(__pa_symbol(x)) +#endif + /* * To prevent common memory management code establishing * a zero page mapping on a read fault. |