From: Nicholas Piggin <npiggin@gmail.com>
Date: Wed, 7 Nov 2018 02:35:20 +0000 (+0800)
Subject: nios2: User address TLB flush break after finding the matching entry
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=b6a10463438d8775aa6aa09ece46e8af14345712;p=linux.git

nios2: User address TLB flush break after finding the matching entry

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
---

diff --git a/arch/nios2/mm/tlb.c b/arch/nios2/mm/tlb.c
index 2469f88ef7f3e..2e49993d29efc 100644
--- a/arch/nios2/mm/tlb.c
+++ b/arch/nios2/mm/tlb.c
@@ -76,6 +76,11 @@ void flush_tlb_one_pid(unsigned long addr, unsigned long mmu_pid)
 		WRCTL(CTL_TLBMISC, tlbmisc);
 		WRCTL(CTL_PTEADDR, pteaddr_invalid(addr));
 		WRCTL(CTL_TLBACC, 0);
+		/*
+		 * There should be only a single entry that maps a
+		 * particular {address,pid} so break after a match.
+		 */
+		break;
 	}
 
 	WRCTL(CTL_TLBMISC, org_misc);