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Commit 86ee79c3 authored by David S. Miller's avatar David S. Miller
Browse files

sparc64: Flush TLB before releasing pages. 



tlb_flush_mmu() needs to flush pending TLB entries before
processing the mmu_gather ->pages list.

Noticed by Benjamin Herrenschmidt.

Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 8e0ee43b

arch/sparc/include/asm/tlb_64.h

+2 −2
Original line number Diff line number Diff line
@@ -57,6 +57,8 @@ static inline struct mmu_gather *tlb_gather_mmu(struct mm_struct *mm, unsigned i 


static inline void tlb_flush_mmu(struct mmu_gather *mp)

{

	if (!mp->fullmm)

		flush_tlb_pending();

	if (mp->need_flush) {

		free_pages_and_swap_cache(mp->pages, mp->pages_nr);

		mp->pages_nr = 0;
@@ -78,8 +80,6 @@ static inline void tlb_finish_mmu(struct mmu_gather *mp, unsigned long start, un 


	if (mp->fullmm)

		mp->fullmm = 0;

	else

		flush_tlb_pending();



	/* keep the page table cache within bounds */

	check_pgt_cache();