diff options
| author | Jani Nikula <jani.nikula@intel.com> | 2018-11-02 09:00:55 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2018-11-02 09:01:28 +0200 |
| commit | 7a085c3aad94cce7e11031c6800e41668418ae4c (patch) | |
| tree | b3474f8bd622f87ad39227057f9de60959c8bd95 /arch/s390/include/asm/mmu.h | |
| parent | 18cde299df33ff73908f7e5dcebf321fb79ed36c (diff) | |
| parent | f9885ef875e9160454392f85159163674159c51f (diff) | |
Merge drm/drm-next into drm-intel-next-queued
Although there's nothing crucial missing, it's been a long time since
the last backmerge. Catch up with drm-next.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'arch/s390/include/asm/mmu.h')
| -rw-r--r-- | arch/s390/include/asm/mmu.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/arch/s390/include/asm/mmu.h b/arch/s390/include/asm/mmu.h index f31a15044c24..a8418e1379eb 100644 --- a/arch/s390/include/asm/mmu.h +++ b/arch/s390/include/asm/mmu.h @@ -16,7 +16,13 @@ typedef struct { unsigned long asce; unsigned long asce_limit; unsigned long vdso_base; - /* The mmu context allocates 4K page tables. */ + /* + * The following bitfields need a down_write on the mm + * semaphore when they are written to. As they are only + * written once, they can be read without a lock. + * + * The mmu context allocates 4K page tables. + */ unsigned int alloc_pgste:1; /* The mmu context uses extended page tables. */ unsigned int has_pgste:1; |