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| author | Laura Abbott <labbott@redhat.com> | 2017-01-11 00:35:42 +0300 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2017-01-11 16:56:49 +0300 |
| commit | 568c5fe5a54f2654f5a4c599c45b8a62ed9a2013 (patch) | |
| tree | 1c3f81b9fa7918f5590efd74072ebc40ebc7cfb4 /include/linux/mm.h | |
| parent | 2dece445b6dbdaa3d94f38ef44aa1b63bc2a6bb9 (diff) | |
| download | linux-568c5fe5a54f2654f5a4c599c45b8a62ed9a2013.tar.xz | |
mm: Introduce lm_alias
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>
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 fe6b4036664a..5dc9c4650522 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. |