Commit fb944c9b authored by Ralf Baechle's avatar Ralf Baechle
Browse files

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: default avatarRalf Baechle <ralf@linux-mips.org>
parent 01422ff4

arch/mips/mm/tlb-r4k.c

+1 −0
Original line number Diff line number Diff line
@@ -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