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From: Michal Hocko <mhocko@kernel.org>
To: Baoquan He <bhe@redhat.com>
Cc: Hoan Tran <Hoan@os.amperecomputing.com>,
	Catalin Marinas <catalin.marinas@arm.com>,
	Will Deacon <will.deacon@arm.com>,
	Andrew Morton <akpm@linux-foundation.org>,
	Vlastimil Babka <vbabka@suse.cz>,
	Oscar Salvador <osalvador@suse.de>,
	Pavel Tatashin <pavel.tatashin@microsoft.com>,
	Mike Rapoport <rppt@linux.ibm.com>,
	Alexander Duyck <alexander.h.duyck@linux.intel.com>,
	Benjamin Herrenschmidt <benh@kernel.crashing.org>,
	Paul Mackerras <paulus@samba.org>,
	Michael Ellerman <mpe@ellerman.id.au>,
	Thomas Gleixner <tglx@linutronix.de>,
	Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
	"H. Peter Anvin" <hpa@zytor.com>,
	"David S. Miller" <davem@davemloft.net>,
	Heiko Carstens <heiko.carstens@de.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	"open list:MEMORY MANAGEMENT" <linux-mm@kvack.org>,
	linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org,
	sparclinux@vger.kernel.org, x86@kernel.org,
	linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org,
	lho@amperecomputing.com, mmorana@amperecomputing.com
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

WARNING: multiple messages have this Message-ID (diff)
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 07:44:26 +0000	[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

WARNING: multiple messages have this Message-ID (diff)
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, 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>,
	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

WARNING: multiple messages have this Message-ID (diff)
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

_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

  reply	other threads:[~2020-03-30  7:44 UTC|newest]

Thread overview: 156+ 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 ` Hoan Tran
2020-03-28 18:31 ` Hoan Tran
2020-03-28 18:31 ` Hoan Tran
2020-03-28 18:31 ` Hoan Tran
2020-03-28 18:31 ` Hoan Tran
2020-03-28 18:31 ` [PATCH v3 1/5] " Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` 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   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31 ` [PATCH v3 3/5] x86: " Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31 ` [PATCH v3 4/5] sparc: " Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31 ` [PATCH v3 5/5] s390: " Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-28 18:31   ` Hoan Tran
2020-03-29  0:19 ` [PATCH v3 0/5] mm: Enable CONFIG_NODES_SPAN_OTHER_NODES by default for NUMA Baoquan He
2020-03-29  0:19   ` Baoquan He
2020-03-29  0:19   ` Baoquan He
2020-03-29  0:19   ` Baoquan He
2020-03-30  7:44   ` Michal Hocko [this message]
2020-03-30  7:44     ` Michal Hocko
2020-03-30  7:44     ` Michal Hocko
2020-03-30  7:44     ` Michal Hocko
2020-03-30  8:04     ` Baoquan He
2020-03-30  8:04       ` Baoquan He
2020-03-30  8:04       ` Baoquan He
2020-03-30  8:04       ` Baoquan He
2020-03-30  7:42 ` Michal Hocko
2020-03-30  7:42   ` Michal Hocko
2020-03-30  7:42   ` Michal Hocko
2020-03-30  7:42   ` Michal Hocko
2020-03-30  8:16   ` Baoquan He
2020-03-30  8:16     ` Baoquan He
2020-03-30  8:16     ` Baoquan He
2020-03-30  8:16     ` Baoquan He
2020-03-30  8:28     ` Baoquan He
2020-03-30  8:28       ` Baoquan He
2020-03-30  8:28       ` Baoquan He
2020-03-30  8:28       ` Baoquan He
2020-03-30  9:21   ` Mike Rapoport
2020-03-30  9:21     ` Mike Rapoport
2020-03-30  9:21     ` Mike Rapoport
2020-03-30  9:21     ` Mike Rapoport
2020-03-30  9:58     ` Michal Hocko
2020-03-30  9:58       ` Michal Hocko
2020-03-30  9:58       ` Michal Hocko
2020-03-30  9:58       ` Michal Hocko
2020-03-30 10:26       ` Mike Rapoport
2020-03-30 10:26         ` Mike Rapoport
2020-03-30 10:26         ` Mike Rapoport
2020-03-30 10:26         ` Mike Rapoport
2020-03-30 10:43         ` Baoquan He
2020-03-30 10:43           ` Baoquan He
2020-03-30 10:43           ` Baoquan He
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
2020-03-31 21:56         ` Mike Rapoport
2020-03-31 21:56         ` Mike Rapoport
2020-03-31 21:56         ` [PATCH RFC] mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP (was: Re: [PATCH v3 0/5] mm: Enable CONFIG_NODE Mike Rapoport
2020-04-01  5:42         ` [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) Baoquan He
2020-04-01  5:42           ` Baoquan He
2020-04-01  5:42           ` Baoquan He
2020-04-01  5:42           ` [PATCH RFC] mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP (was: Re: [PATCH v3 0/5] mm: Enable CONFIG_ Baoquan He
2020-04-01  7:51           ` [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  7:51             ` Mike Rapoport
2020-04-01  7:51             ` Mike Rapoport
2020-04-01  7:51             ` [PATCH RFC] mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP (was: Re: [PATCH v3 0/5] mm: Enable CONFIG_ Mike Rapoport
2020-04-02  8:01             ` [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) Michal Hocko
2020-04-02  8:01               ` Michal Hocko
2020-04-02  8:01               ` Michal Hocko
2020-04-02  8:01               ` [PATCH RFC] mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP (was: Re: [PATCH v3 0/5] mm: Enable CONFIG_ Michal Hocko
2020-04-09 14:41               ` [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) Baoquan He
2020-04-09 14:41                 ` Baoquan He
2020-04-09 14:41                 ` Baoquan He
2020-04-09 14:41                 ` [PATCH RFC] mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP (was: Re: [PATCH v3 0/5] mm: Enable CONFIG_ Baoquan He
2020-04-09 15:33                 ` [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) Michal Hocko
2020-04-09 15:33                   ` Michal Hocko
2020-04-09 15:33                   ` Michal Hocko
2020-04-09 15:33                   ` [PATCH RFC] mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP (was: Re: [PATCH v3 0/5] mm: Enable CONFIG_ Michal Hocko
2020-04-10  6:46                   ` [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) Baoquan He
2020-04-10  6:46                     ` Baoquan He
2020-04-10  6:46                     ` Baoquan He
2020-04-10  6:46                     ` [PATCH RFC] mm: remove CONFIG_HAVE_MEMBLOCK_NODE_MAP (was: Re: [PATCH v3 0/5] mm: Enable CONFIG_ 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  9:26     ` Baoquan He
2020-03-30  9:26     ` Baoquan He
2020-03-30  9:26     ` Baoquan He
2020-03-30 17:51   ` Mike Rapoport
2020-03-30 17:51     ` Mike Rapoport
2020-03-30 17:51     ` Mike Rapoport
2020-03-30 17:51     ` Mike Rapoport
2020-03-30 18:23     ` Michal Hocko
2020-03-30 18:23       ` Michal Hocko
2020-03-30 18:23       ` Michal Hocko
2020-03-30 18:23       ` Michal Hocko
2020-03-31  8:14       ` Mike Rapoport
2020-03-31  8:14         ` Mike Rapoport
2020-03-31  8:14         ` Mike Rapoport
2020-03-31  8:14         ` Mike Rapoport
2020-03-31  8:55         ` Michal Hocko
2020-03-31  8:55           ` Michal Hocko
2020-03-31  8:55           ` Michal Hocko
2020-03-31  8:55           ` Michal Hocko
2020-03-31 14:03           ` Baoquan He
2020-03-31 14:03             ` Baoquan He
2020-03-31 14:03             ` Baoquan He
2020-03-31 14:03             ` Baoquan He
2020-03-31 14:21             ` Michal Hocko
2020-03-31 14:21               ` Michal Hocko
2020-03-31 14:21               ` Michal Hocko
2020-03-31 14:21               ` Michal Hocko
2020-03-31 14:31               ` Baoquan He
2020-03-31 14:31                 ` Baoquan He
2020-03-31 14:31                 ` Baoquan He
2020-03-31 14:31                 ` Baoquan He
2020-04-03  4:46                 ` Hoan Tran
2020-04-03  4:46                   ` Hoan Tran
2020-04-03  4:46                   ` Hoan Tran
2020-04-03  4:46                   ` Hoan Tran
2020-04-03  7:09                   ` Baoquan He
2020-04-03  7:09                     ` Baoquan He
2020-04-03  7:09                     ` Baoquan He
2020-04-03  7:09                     ` Baoquan He
2020-04-03 16:36                     ` Hoan Tran
2020-04-03 16:36                       ` Hoan Tran
2020-04-03 16:36                       ` Hoan Tran
2020-04-03 16:36                       ` Hoan Tran
2020-04-09 16:27               ` Mike Rapoport
2020-04-09 16:27                 ` Mike Rapoport
2020-04-09 16:27                 ` Mike Rapoport
2020-04-09 16:27                 ` Mike Rapoport
2020-04-10  6:50                 ` Baoquan He
2020-04-10  6:50                   ` Baoquan He
2020-04-10  6:50                   ` Baoquan He
2020-04-10  6:50                   ` Baoquan He

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