From: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Subject: powerpc/mm/highmem: use __set_pte_at() for kmap_local() The original PowerPC highmem mapping function used __set_pte_at() to denote that the mapping is per CPU. This got lost with the conversion to the generic implementation. Override the default map function. Link: https://lkml.kernel.org/r/20210112170411.281464308@xxxxxxxxxxxxx Fixes: 47da42b27a56 ("powerpc/mm/highmem: Switch to generic kmap atomic") Signed-off-by: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: Michael Ellerman <mpe@xxxxxxxxxxxxxx> Cc: Andreas Larsson <andreas@xxxxxxxxxxx> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> Cc: Paul Cercueil <paul@xxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Thomas Bogendoerfer <tsbogend@xxxxxxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/powerpc/include/asm/highmem.h | 2 ++ 1 file changed, 2 insertions(+) --- a/arch/powerpc/include/asm/highmem.h~powerpc-mm-highmem-use-__set_pte_at-for-kmap_local +++ a/arch/powerpc/include/asm/highmem.h @@ -58,6 +58,8 @@ extern pte_t *pkmap_page_table; #define flush_cache_kmaps() flush_cache_all() +#define arch_kmap_local_set_pte(mm, vaddr, ptep, ptev) \ + __set_pte_at(mm, vaddr, ptep, ptev, 1) #define arch_kmap_local_post_map(vaddr, pteval) \ local_flush_tlb_page(NULL, vaddr) #define arch_kmap_local_post_unmap(vaddr) \ _
