diff options
| author | Thomas Gleixner <[email protected]> | 2021-01-23 21:01:57 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2021-01-24 10:34:52 -0800 |
| commit | f99e02372af2e7ee72a6da497712ec9152964347 (patch) | |
| tree | e17aaa825745cdbdd40218e1b0a47b68a6761414 | |
| parent | dad4e5b390866ca902653df0daa864ae4b8d4147 (diff) | |
sparc/mm/highmem: flush cache and TLB
Patch series "mm/highmem: Fix fallout from generic kmap_local
conversions".
The kmap_local conversion wreckaged sparc, mips and powerpc as it missed
some of the details in the original implementation.
This patch (of 4):
The recent conversion to the generic kmap_local infrastructure failed to
assign the proper pre/post map/unmap flush operations for sparc.
Sparc requires cache flush before map/unmap and tlb flush afterwards.
Link: https://lkml.kernel.org/r/[email protected]
Link: https://lkml.kernel.org/r/[email protected]
Fixes: 3293efa97807 ("sparc/mm/highmem: Switch to generic kmap atomic")
Signed-off-by: Thomas Gleixner <[email protected]>
Reported-by: Andreas Larsson <[email protected]>
Cc: "David S. Miller" <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Paul Cercueil <[email protected]>
Cc: Thomas Bogendoerfer <[email protected]>
Cc: Michael Ellerman <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | arch/sparc/include/asm/highmem.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/arch/sparc/include/asm/highmem.h b/arch/sparc/include/asm/highmem.h index 875116209ec1..c7b2e208328b 100644 --- a/arch/sparc/include/asm/highmem.h +++ b/arch/sparc/include/asm/highmem.h @@ -50,10 +50,11 @@ extern pte_t *pkmap_page_table; #define flush_cache_kmaps() flush_cache_all() -/* FIXME: Use __flush_tlb_one(vaddr) instead of flush_cache_all() -- Anton */ -#define arch_kmap_local_post_map(vaddr, pteval) flush_cache_all() -#define arch_kmap_local_post_unmap(vaddr) flush_cache_all() - +/* FIXME: Use __flush_*_one(vaddr) instead of flush_*_all() -- Anton */ +#define arch_kmap_local_pre_map(vaddr, pteval) flush_cache_all() +#define arch_kmap_local_pre_unmap(vaddr) flush_cache_all() +#define arch_kmap_local_post_map(vaddr, pteval) flush_tlb_all() +#define arch_kmap_local_post_unmap(vaddr) flush_tlb_all() #endif /* __KERNEL__ */ |