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From: Nicholas Piggin <npiggin@gmail.com>
To: linuxppc-dev@lists.ozlabs.org
Cc: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>,
	"Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>,
	Reza Arbab <arbab@linux.vnet.ibm.com>,
	Anju T Sudhakar <anju@linux.vnet.ibm.com>,
	Nicholas Piggin <npiggin@gmail.com>
Subject: [PATCH 2/5] powerpc/64s/radix: Fix memory hot-unplug page table split
Date: Wed, 24 Jul 2019 18:46:35 +1000	[thread overview]
Message-ID: <20190724084638.24982-2-npiggin@gmail.com> (raw)
In-Reply-To: <20190724084638.24982-1-npiggin@gmail.com>

create_physical_mapping expects physical addresses, but splitting
these mapping on hot unplug is supplying virtual (effective)
addresses.

[I'm not sure how to test this one]

Cc: Balbir Singh <bsingharora@gmail.com>
Fixes: 4dd5f8a99e791 ("powerpc/mm/radix: Split linear mapping on hot-unplug")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 arch/powerpc/mm/book3s64/radix_pgtable.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/arch/powerpc/mm/book3s64/radix_pgtable.c b/arch/powerpc/mm/book3s64/radix_pgtable.c
index c5cc16ab1954..2204d8eeb784 100644
--- a/arch/powerpc/mm/book3s64/radix_pgtable.c
+++ b/arch/powerpc/mm/book3s64/radix_pgtable.c
@@ -737,8 +737,8 @@ static int __meminit stop_machine_change_mapping(void *data)
 
 	spin_unlock(&init_mm.page_table_lock);
 	pte_clear(&init_mm, params->aligned_start, params->pte);
-	create_physical_mapping(params->aligned_start, params->start, -1);
-	create_physical_mapping(params->end, params->aligned_end, -1);
+	create_physical_mapping(__pa(params->aligned_start), __pa(params->start), -1);
+	create_physical_mapping(__pa(params->end), __pa(params->aligned_end), -1);
 	spin_lock(&init_mm.page_table_lock);
 	return 0;
 }
-- 
2.22.0


  reply	other threads:[~2019-07-24  8:51 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-07-24  8:46 [PATCH 1/5] powerpc/64s/radix: Fix memory hotplug section page table creation Nicholas Piggin
2019-07-24  8:46 ` Nicholas Piggin [this message]
2019-07-24  9:55   ` [PATCH 2/5] powerpc/64s/radix: Fix memory hot-unplug page table split Aneesh Kumar K.V
2019-07-24  8:46 ` [PATCH 3/5] powerpc/perf: fix imc allocation failure handling Nicholas Piggin
2019-07-24  9:58   ` Aneesh Kumar K.V
2019-07-24  8:46 ` [PATCH 4/5] powerpc/64: Add VIRTUAL_BUG_ON checks for __va and __pa addresses Nicholas Piggin
2019-07-24  9:59   ` Aneesh Kumar K.V
2019-07-29 11:57   ` Christophe Leroy
2021-12-24 13:24   ` Christophe Leroy
2021-12-25 10:10     ` Nicholas Piggin
2021-12-26 17:20       ` Christophe Leroy
2019-07-24  8:46 ` [PATCH 5/5] powerpc/64s/radix: Remove redundant pfn_pte bitop, add VM_BUG_ON Nicholas Piggin
2019-07-24  9:59   ` Aneesh Kumar K.V
2019-07-24  9:54 ` [PATCH 1/5] powerpc/64s/radix: Fix memory hotplug section page table creation Aneesh Kumar K.V
2019-08-22 13:08 ` Michael Ellerman

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