diff options
| author | Laura Abbott <labbott@redhat.com> | 2017-01-10 13:35:42 -0800 |
|---|---|---|
| committer | Alex Shi <alex.shi@linaro.org> | 2018-03-07 13:09:18 +0800 |
| commit | 4e6b36a2f7046223154c345d00db44e0715e78df (patch) | |
| tree | 9a2e06f4a8867d230ed07ce64b9eba073290e827 | |
| parent | b8df0120d69532cf0996f5887cd0b3118d028136 (diff) | |
mm: Introduce lm_alias
commit 568c5fe5a54 upstream.
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>
Signed-off-by: Alex Shi <alex.shi@linaro.org>
| -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 2217e2f18247..edd2480cdff4 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -76,6 +76,10 @@ extern int mmap_rnd_compat_bits __read_mostly; #define page_to_virt(x) __va(PFN_PHYS(page_to_pfn(x))) #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. |