From 5491ae7b6f48499b8892822cff371746f0b4102f Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Wed, 13 Jul 2016 15:06:43 +0530 Subject: powerpc/mm/hugetlb: Add flush_hugetlb_tlb_range Some archs like ppc64 need to do special things when flushing tlb for hugepage. Add a new helper to flush hugetlb tlb range. This helps us to avoid flushing the entire tlb mapping for the pid. Signed-off-by: Aneesh Kumar K.V Signed-off-by: Michael Ellerman --- arch/powerpc/mm/hugetlbpage-radix.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'arch/powerpc/mm/hugetlbpage-radix.c') diff --git a/arch/powerpc/mm/hugetlbpage-radix.c b/arch/powerpc/mm/hugetlbpage-radix.c index 1eca0deaf89b..35254a678456 100644 --- a/arch/powerpc/mm/hugetlbpage-radix.c +++ b/arch/powerpc/mm/hugetlbpage-radix.c @@ -25,6 +25,16 @@ void radix__local_flush_hugetlb_page(struct vm_area_struct *vma, unsigned long v radix__local_flush_tlb_page_psize(vma->vm_mm, vmaddr, psize); } +void radix__flush_hugetlb_tlb_range(struct vm_area_struct *vma, unsigned long start, + unsigned long end) +{ + int psize; + struct hstate *hstate = hstate_file(vma->vm_file); + + psize = hstate_get_psize(hstate); + radix__flush_tlb_range_psize(vma->vm_mm, start, end, psize); +} + /* * A vairant of hugetlb_get_unmapped_area doing topdown search * FIXME!! should we do as x86 does or non hugetlb area does ? -- cgit v1.2.3-59-g8ed1b