From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Nicholas Piggin <npiggin@gmail.com>,
"Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>
Subject: [PATCH v2 1/3] powerpc/64s/radix: fix preempt imbalance in TLB flush
Date: Tue, 24 Oct 2017 23:06:52 +1000 [thread overview]
Message-ID: <20171024130654.1223-2-npiggin@gmail.com> (raw)
In-Reply-To: <20171024130654.1223-1-npiggin@gmail.com>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
arch/powerpc/mm/tlb-radix.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/mm/tlb-radix.c b/arch/powerpc/mm/tlb-radix.c
index 3a07d7a5e2fe..892544ebc2d2 100644
--- a/arch/powerpc/mm/tlb-radix.c
+++ b/arch/powerpc/mm/tlb-radix.c
@@ -358,7 +358,7 @@ void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm, unsigned long addr)
unsigned long ap = mmu_get_ap(mmu_virtual_psize);
unsigned long pid, end;
-
+ preempt_disable();
pid = mm->context.id;
if (unlikely(pid == MMU_NO_CONTEXT))
goto no_context;
@@ -366,6 +366,7 @@ void radix__flush_tlb_collapsed_pmd(struct mm_struct *mm, unsigned long addr)
/* 4k page size, just blow the world */
if (PAGE_SIZE == 0x1000) {
radix__flush_all_mm(mm);
+ preempt_enable();
return;
}
--
2.13.3
next prev parent reply other threads:[~2017-10-24 13:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-24 13:06 [PATCH v2 0/3] powerpc/64s/radix: misc minor TLB flush fixes Nicholas Piggin
2017-10-24 13:06 ` Nicholas Piggin [this message]
2017-10-26 6:52 ` [PATCH v2 1/3] powerpc/64s/radix: fix preempt imbalance in TLB flush Aneesh Kumar K.V
2017-11-01 5:17 ` [v2,1/3] " Michael Ellerman
2017-10-24 13:06 ` [PATCH v2 2/3] powerpc/64s/radix: tlbie improve preempt handling Nicholas Piggin
2017-10-26 6:53 ` Aneesh Kumar K.V
2017-11-07 23:30 ` [v2,2/3] " Michael Ellerman
2017-10-24 13:06 ` [PATCH v2 3/3] powerpc/64s/radix: Fix process table entry cache invalidation Nicholas Piggin
2017-10-26 6:53 ` Aneesh Kumar K.V
2017-11-07 23:30 ` [v2, " Michael Ellerman
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