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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Wed, 24 Apr 2019 12:33:58 +0100 Received: from b06wcsmtp001.portsmouth.uk.ibm.com (b06wcsmtp001.portsmouth.uk.ibm.com [9.149.105.160]) by b06cxnps3074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x3OBXvOw43188232 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Wed, 24 Apr 2019 11:33:57 GMT Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id B0825A4068; Wed, 24 Apr 2019 11:33:55 +0000 (GMT) Received: from b06wcsmtp001.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id DBF48A4064; Wed, 24 Apr 2019 11:33:54 +0000 (GMT) Received: from rapoport-lnx (unknown [9.148.8.112]) by b06wcsmtp001.portsmouth.uk.ibm.com (Postfix) with ESMTPS; Wed, 24 Apr 2019 11:33:54 +0000 (GMT) Date: Wed, 24 Apr 2019 14:33:53 +0300 From: Mike Rapoport To: Christoph Hellwig Cc: Mel Gorman , Matthew Wilcox , Andrew Morton , Mikulas Patocka , James Bottomley , linux-parisc@vger.kernel.org, linux-mm@kvack.org, Vlastimil Babka , LKML , linux-arch@vger.kernel.org Subject: Re: DISCONTIGMEM is deprecated References: <20190419094335.GJ18914@techsingularity.net> <20190419140521.GI7751@bombadil.infradead.org> <20190421063859.GA19926@rapoport-lnx> <20190421132606.GJ7751@bombadil.infradead.org> <20190421211604.GN18914@techsingularity.net> <20190423071354.GB12114@infradead.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190423071354.GB12114@infradead.org> User-Agent: Mutt/1.5.24 (2015-08-30) X-TM-AS-GCONF: 00 x-cbid: 19042411-4275-0000-0000-0000032C0709 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19042411-4276-0000-0000-0000383B4F66 Message-Id: <20190424113352.GA6278@rapoport-lnx> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-04-24_08:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=874 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1904240095 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Tue, Apr 23, 2019 at 12:13:54AM -0700, Christoph Hellwig wrote: > On Sun, Apr 21, 2019 at 10:16:04PM +0100, Mel Gorman wrote: > > 32-bit NUMA systems should be non-existent in practice. The last NUMA > > system I'm aware of that was both NUMA and 32-bit only died somewhere > > between 2004 and 2007. If someone is running a 64-bit capable system in > > 32-bit mode with NUMA, they really are just punishing themselves for fun. > > Can we mark it as BROKEN to see if someone shouts and then remove it > a year or two down the road? Or just kill it off now.. How about making SPARSEMEM default for x86-32? >From ac2dc27414e26f799ea063fd1d01e19d70056f43 Mon Sep 17 00:00:00 2001 From: Mike Rapoport Date: Wed, 24 Apr 2019 14:32:12 +0300 Subject: [PATCH] x86/Kconfig: make SPARSEMEM default for X86_32 Signed-off-by: Mike Rapoport --- arch/x86/Kconfig | 6 +----- 1 file changed, 1 insertion(+), 5 deletions(-) diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 62fc3fd..77b17af 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -1609,10 +1609,6 @@ config ARCH_DISCONTIGMEM_ENABLE def_bool y depends on NUMA && X86_32 -config ARCH_DISCONTIGMEM_DEFAULT - def_bool y - depends on NUMA && X86_32 - config ARCH_SPARSEMEM_ENABLE def_bool y depends on X86_64 || NUMA || X86_32 || X86_32_NON_STANDARD @@ -1621,7 +1617,7 @@ config ARCH_SPARSEMEM_ENABLE config ARCH_SPARSEMEM_DEFAULT def_bool y - depends on X86_64 + depends on X86_64 || (NUMA && X86_32) config ARCH_SELECT_MEMORY_MODEL def_bool y -- 2.7.4 -- Sincerely yours, Mike.