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| author |   Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2017-03-09 17:24:03 +0300 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2017-03-09 11:48:47 -0800 |
| commit | 505a60e225606fbd3d2eadc31ff793d939ba66f1 (patch) | |
| tree | 00eb708b2512cb3d49e6aff3606b6c8c83cd61f6 /include/asm-generic/4level-fixup.h | |
| parent | x86/cpufeature: Add 5-level paging detection (diff) | |
| download | linux-dev-505a60e225606fbd3d2eadc31ff793d939ba66f1.tar.xz linux-dev-505a60e225606fbd3d2eadc31ff793d939ba66f1.zip | |
asm-generic: introduce 5level-fixup.h
We are going to switch core MM to 5-level paging abstraction.
This is preparation step which adds <asm-generic/5level-fixup.h>
As with 4level-fixup.h, the new header allows quickly make all
architectures compatible with 5-level paging in core MM.
In long run we would like to switch architectures to properly folded p4d
level by using <asm-generic/pgtable-nop4d.h>, but it requires more
changes to arch-specific code.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-generic/4level-fixup.h')
| -rw-r--r-- | include/asm-generic/4level-fixup.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/asm-generic/4level-fixup.h b/include/asm-generic/4level-fixup.h index 5bdab6bffd23..928fd66b1271 100644 --- a/include/asm-generic/4level-fixup.h +++ b/include/asm-generic/4level-fixup.h @@ -15,7 +15,6 @@ ((unlikely(pgd_none(*(pud))) && __pmd_alloc(mm, pud, address))? \ NULL: pmd_offset(pud, address)) -#define pud_alloc(mm, pgd, address) (pgd) #define pud_offset(pgd, start) (pgd) #define pud_none(pud) 0 #define pud_bad(pud) 0 @@ -35,4 +34,6 @@ #undef pud_addr_end #define pud_addr_end(addr, end) (end) +#include <asm-generic/5level-fixup.h> + #endif |