* [PATCH AUTOSEL 3.18 03/29] x86/numa_emulation: Fix emulated-to-physical node mapping
[not found] <20180917030533.592-1-alexander.levin@microsoft.com>
@ 2018-09-17 3:05 ` Sasha Levin
0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2018-09-17 3:05 UTC (permalink / raw)
To: stable@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Dan Williams, David Rientjes, Linus Torvalds, Peter Zijlstra,
Thomas Gleixner, Wei Yang, linux-mm@kvack.org, Ingo Molnar,
Sasha Levin
From: Dan Williams <dan.j.williams@intel.com>
[ Upstream commit 3b6c62f363a19ce82bf378187ab97c9dc01e3927 ]
Without this change the distance table calculation for emulated nodes
may use the wrong numa node and report an incorrect distance.
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Wei Yang <richard.weiyang@gmail.com>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/153089328103.27680.14778434392225818887.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
---
arch/x86/mm/numa_emulation.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/mm/numa_emulation.c b/arch/x86/mm/numa_emulation.c
index a8f90ce3dedf..dc6d99017f3f 100644
--- a/arch/x86/mm/numa_emulation.c
+++ b/arch/x86/mm/numa_emulation.c
@@ -60,7 +60,7 @@ static int __init emu_setup_memblk(struct numa_meminfo *ei,
eb->nid = nid;
if (emu_nid_to_phys[nid] == NUMA_NO_NODE)
- emu_nid_to_phys[nid] = nid;
+ emu_nid_to_phys[nid] = pb->nid;
pb->start += size;
if (pb->start >= pb->end) {
--
2.17.1
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