Messages in this thread Patch in this message | | | Date | Tue, 12 Jan 2021 18:01:39 +0100 | From | Thomas Gleixner <> | Subject | [patch 3/4] mips/mm/highmem: Use set_pte() for kmap_local() |
| |
set_pte_at() on MIPS invokes update_cache() which might recurse into kmap_local(). Use set_pte() like the original MIPS highmem implementation did.
Fixes: a4c33e83bca1 ("mips/mm/highmem: Switch to generic kmap atomic") Reported-by: Paul Cercueil <paul@crapouillou.net> Reported-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- arch/mips/include/asm/highmem.h | 1 + 1 file changed, 1 insertion(+)
--- a/arch/mips/include/asm/highmem.h +++ b/arch/mips/include/asm/highmem.h @@ -51,6 +51,7 @@ extern void kmap_flush_tlb(unsigned long #define flush_cache_kmaps() BUG_ON(cpu_has_dc_aliases) +#define arch_kmap_local_set_pte(mm, vaddr, ptep, ptev) set_pte(ptep, ptev) #define arch_kmap_local_post_map(vaddr, pteval) local_flush_tlb_one(vaddr) #define arch_kmap_local_post_unmap(vaddr) local_flush_tlb_one(vaddr)
| |