From: Michal Hocko <mhocko@kernel.org>
To: Baoquan He <bhe@redhat.com>
Cc: mmorana@amperecomputing.com,
Catalin Marinas <catalin.marinas@arm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
"open list:MEMORY MANAGEMENT" <linux-mm@kvack.org>,
Paul Mackerras <paulus@samba.org>,
"H. Peter Anvin" <hpa@zytor.com>,
sparclinux@vger.kernel.org,
Alexander Duyck <alexander.h.duyck@linux.intel.com>,
linux-s390@vger.kernel.org, Michael Ellerman <mpe@ellerman.id.au>,
x86@kernel.org, Mike Rapoport <rppt@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Ingo Molnar <mingo@redhat.com>,
Hoan Tran <Hoan@os.amperecomputing.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
Pavel Tatashin <pavel.tatashin@microsoft.com>,
lho@amperecomputing.com, Vasily Gorbik <gor@linux.ibm.com>,
Vlastimil Babka <vbabka@suse.cz>,
Will Deacon <will.deacon@arm.com>, Borislav Petkov <bp@alien8.de>,
Thomas Gleixner <tglx@linutronix.de>,
linux-arm-kernel@lists.infradead.org,
Oscar Salvador <osalvador@suse.de>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
linuxppc-dev@lists.ozlabs.org,
"David S. Miller" <davem@davemloft.net>
Subject: Re: [PATCH v3 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA
Date: Mon, 30 Mar 2020 09:44:26 +0200 [thread overview]
Message-ID: <20200330074426.GB14243@dhcp22.suse.cz> (raw)
In-Reply-To: <20200329001924.GS3039@MiWiFi-R3L-srv>
On Sun 29-03-20 08:19:24, Baoquan He wrote:
> On 03/28/20 at 11:31am, Hoan Tran wrote:
> > In NUMA layout which nodes have memory ranges that span across other nodes,
> > the mm driver can detect the memory node id incorrectly.
> >
> > For example, with layout below
> > Node 0 address: 0000 xxxx 0000 xxxx
> > Node 1 address: xxxx 1111 xxxx 1111
>
> Sorry, I read this example several times, but still don't get what it
> means. Can it be given with real hex number address as an exmaple? I
> mean just using the memory layout you have seen from some systems. The
> change looks interesting though.
Does this make it more clear?
physical address range and its node associaion
[0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1]
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2020-03-30 7:44 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-28 18:31 [PATCH v3 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA Hoan Tran
2020-03-28 18:31 ` [PATCH v3 1/5] " Hoan Tran
2020-03-28 18:31 ` [PATCH v3 2/5] powerpc: Kconfig: Remove CONFIG_NODES_SPAN_OTHER_NODES Hoan Tran
2020-03-28 18:31 ` [PATCH v3 3/5] x86: " Hoan Tran
2020-03-28 18:31 ` [PATCH v3 4/5] sparc: " Hoan Tran
2020-03-28 18:31 ` [PATCH v3 5/5] s390: " Hoan Tran
2020-03-29 0:19 ` [PATCH v3 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA Baoquan He
2020-03-30 7:44 ` Michal Hocko [this message]
2020-03-30 8:04 ` Baoquan He
2020-03-30 7:42 ` Michal Hocko
2020-03-30 8:16 ` Baoquan He
2020-03-30 8:28 ` Baoquan He
2020-03-30 9:21 ` Mike Rapoport
2020-03-30 9:58 ` Michal Hocko
2020-03-30 10:26 ` Mike Rapoport
2020-03-30 10:43 ` Baoquan He
2020-03-31 21:56 ` [PATCH RFC] mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP (was: Re: [PATCH v3 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA) Mike Rapoport
2020-04-01 5:42 ` Baoquan He
2020-04-01 7:51 ` Mike Rapoport
2020-04-02 8:01 ` Michal Hocko
2020-04-09 14:41 ` Baoquan He
2020-04-09 15:33 ` Michal Hocko
2020-04-10 6:46 ` Baoquan He
2020-03-30 9:26 ` [PATCH v3 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA Baoquan He
2020-03-30 17:51 ` Mike Rapoport
2020-03-30 18:23 ` Michal Hocko
2020-03-31 8:14 ` Mike Rapoport
2020-03-31 8:55 ` Michal Hocko
2020-03-31 14:03 ` Baoquan He
2020-03-31 14:21 ` Michal Hocko
2020-03-31 14:31 ` Baoquan He
2020-04-03 4:46 ` Hoan Tran
2020-04-03 7:09 ` Baoquan He
2020-04-03 16:36 ` Hoan Tran
2020-04-09 16:27 ` Mike Rapoport
2020-04-10 6:50 ` Baoquan He
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