From 274d842fa1efd9449e62222c8896e0be11621f1f Mon Sep 17 00:00:00 2001 From: Benjamin Gray Date: Wed, 9 Nov 2022 15:51:10 +1100 Subject: powerpc/tlb: Add local flush for page given mm_struct and psize Adds a local TLB flush operation that works given an mm_struct, VA to flush, and page size representation. Most implementations mirror the surrounding code. The book3s/32/tlbflush.h implementation is left as a BUILD_BUG because it is more complicated and not required for anything as yet. This removes the need to create a vm_area_struct, which the temporary patching mm work does not need. Signed-off-by: Benjamin Gray Reviewed-by: Christophe Leroy Signed-off-by: Michael Ellerman Link: https://lore.kernel.org/r/20221109045112.187069-8-bgray@linux.ibm.com --- arch/powerpc/mm/nohash/tlb.c | 8 ++++++++ 1 file changed, 8 insertions(+) (limited to 'arch/powerpc/mm/nohash/tlb.c') diff --git a/arch/powerpc/mm/nohash/tlb.c b/arch/powerpc/mm/nohash/tlb.c index 2c15c86c7015..a903b308acc5 100644 --- a/arch/powerpc/mm/nohash/tlb.c +++ b/arch/powerpc/mm/nohash/tlb.c @@ -184,6 +184,14 @@ void local_flush_tlb_page(struct vm_area_struct *vma, unsigned long vmaddr) mmu_get_tsize(mmu_virtual_psize), 0); } EXPORT_SYMBOL(local_flush_tlb_page); + +void local_flush_tlb_page_psize(struct mm_struct *mm, + unsigned long vmaddr, int psize) +{ + __local_flush_tlb_page(mm, vmaddr, mmu_get_tsize(psize), 0); +} +EXPORT_SYMBOL(local_flush_tlb_page_psize); + #endif /* -- cgit v1.2.3