From fb944c9ba3f4838a64929a1926822e987b4e44c0 Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Wed, 17 Oct 2012 01:01:21 +0200 Subject: [PATCH] MIPS: hugetlbfs: Fix hazard between tlb write and pagemask restoration. On some CPU the write to pagemask might complete before the TLB write instruction reads from the pagemask register. Signed-off-by: Ralf Baechle --- arch/mips/mm/tlb-r4k.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mips/mm/tlb-r4k.c b/arch/mips/mm/tlb-r4k.c index 87b9cfcc30ff..4b9b935a070e 100644 --- a/arch/mips/mm/tlb-r4k.c +++ b/arch/mips/mm/tlb-r4k.c @@ -320,6 +320,7 @@ void __update_tlb(struct vm_area_struct * vma, unsigned long address, pte_t pte) tlb_write_random(); else tlb_write_indexed(); + tlbw_use_hazard(); write_c0_pagemask(PM_DEFAULT_MASK); } else #endif -- 2.20.1