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powerpc/64s/radix: Fix memory hot-unplug page table split
author
Nicholas Piggin
<npiggin@gmail.com>
Wed, 24 Jul 2019 08:46:35 +0000
(18:46 +1000)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Mon, 27 Jan 2020 13:51:05 +0000
(14:51 +0100)
[ Upstream commit
31f210cf42d4b308eacef89b6cb0b1459338b8de
]
create_physical_mapping expects physical addresses, but splitting
these mapping on hot unplug is supplying virtual (effective)
addresses.
Fixes:
4dd5f8a99e791
("powerpc/mm/radix: Split linear mapping on hot-unplug")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link:
https://lore.kernel.org/r/20190724084638.24982-2-npiggin@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
arch/powerpc/mm/pgtable-radix.c
patch
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blob
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history
diff --git
a/arch/powerpc/mm/pgtable-radix.c
b/arch/powerpc/mm/pgtable-radix.c
index
69caeb5
..
5404a63
100644
(file)
--- a/
arch/powerpc/mm/pgtable-radix.c
+++ b/
arch/powerpc/mm/pgtable-radix.c
@@
-717,8
+717,8
@@
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;
}