linux-kernel - [tip:x86/cpu] x86/numa_emulation: Fix emulated-to-physical node mapping

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <tip-3b6c62f363a19ce82bf378187ab97c9dc01e3927@git.kernel.org>
Date:   Fri, 6 Jul 2018 09:54:54 -0700
From:   tip-bot for Dan Williams <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...nel.org,
        dan.j.williams@...el.com, richard.weiyang@...il.com,
        peterz@...radead.org, torvalds@...ux-foundation.org,
        rientjes@...gle.com, hpa@...or.com
Subject: [tip:x86/cpu] x86/numa_emulation: Fix emulated-to-physical node
 mapping

Commit-ID:  3b6c62f363a19ce82bf378187ab97c9dc01e3927
Gitweb:     https://git.kernel.org/tip/3b6c62f363a19ce82bf378187ab97c9dc01e3927
Author:     Dan Williams <dan.j.williams@...el.com>
AuthorDate: Fri, 6 Jul 2018 09:08:01 -0700
Committer:  Ingo Molnar <mingo@...nel.org>
CommitDate: Fri, 6 Jul 2018 18:48:58 +0200

x86/numa_emulation: Fix emulated-to-physical node mapping

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@...el.com>
Cc: David Rientjes <rientjes@...gle.com>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Wei Yang <richard.weiyang@...il.com>
Cc: linux-mm@...ck.org
Link: http://lkml.kernel.org/r/153089328103.27680.14778434392225818887.stgit@dwillia2-desk3.amr.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
 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 34a2a3bfde9c..22cbad56acab 100644
--- a/arch/x86/mm/numa_emulation.c
+++ b/arch/x86/mm/numa_emulation.c
@@ -61,7 +61,7 @@ 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) {