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riscv: mm: Fix code comment

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Fix the comment since vmalloc_fault doesn't reach
flush_tlb_fix_spurious_fault.

Signed-off-by: ShihPo Hung <shihpo.hung@sifive.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: linux-riscv@lists.infradead.org
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
This commit is contained in:
ShihPo Hung 2019-06-18 17:39:15 +08:00 committed by Paul Walmsley
parent e3f9dada0a
commit 0db7f5cd4a
1 changed files with 0 additions and 3 deletions
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3
arch/riscv/mm/fault.c
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@ -272,9 +272,6 @@ asmlinkage void do_page_fault(struct pt_regs *regs)
* entries, but in RISC-V, SFENCE.VMA specifies an
* ordering constraint, not a cache flush; it is
* necessary even after writing invalid entries.
* Relying on flush_tlb_fix_spurious_fault would
* suffice, but the extra traps reduce
* performance. So, eagerly SFENCE.VMA.
*/
local_flush_tlb_page(addr);