From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4823816BE0B; Fri, 2 Aug 2024 16:44:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=185.176.79.56 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722617089; cv=none; b=D++J5nz4W2qB0UvFG9MIHJXD8C7wV6h5WlA4WoHP6DaOmfQ6Z0yK9BADE2hpDG0L++hmOSS3w4aHIiFpw+G/w/64hKhVnqkcOQDX8u6awsSAA79dtqngqscDCIraPv0p9bOP49sn6aecIpxyA2EZzJXvXP7kLqJl99NP0acsCkw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722617089; c=relaxed/simple; bh=NCbcoYaXRkWCPqQyDc3SvLTQKqJDdoxXXdNRp7Lxpbs=; h=Date:From:To:CC:Subject:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=lCLHlV6CpOm8I3ytXZV58odGzhKssSn4mYVx+u82uzv2NNPAt2KhqqLINfwmoktDWEPfarSn0pNNgy2pndspbrAFJOAOv800Z1YiIQHDiCFGqttqzLNKeoo+jeIP/yMK0EOY3KVFIeqaHdCChPcptQkkK+4SJIg+2NX1uFpYF8A= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=Huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=185.176.79.56 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=Huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4WbBTD2kfFz6K5YZ; Sat, 3 Aug 2024 00:42:40 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id A6A811404F5; Sat, 3 Aug 2024 00:44:44 +0800 (CST) Received: from localhost (10.203.177.66) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Fri, 2 Aug 2024 17:44:43 +0100 Date: Fri, 2 Aug 2024 17:44:43 +0100 From: Jonathan Cameron To: Mike Rapoport CC: , Alexander Gordeev , Andreas Larsson , "Andrew Morton" , Arnd Bergmann , "Borislav Petkov" , Catalin Marinas , Christophe Leroy , Dan Williams , Dave Hansen , David Hildenbrand , "David S. Miller" , Davidlohr Bueso , "Greg Kroah-Hartman" , Heiko Carstens , Huacai Chen , Ingo Molnar , Jiaxun Yang , "John Paul Adrian Glaubitz" , Jonathan Corbet , Michael Ellerman , Palmer Dabbelt , "Rafael J. Wysocki" , Rob Herring , Samuel Holland , Thomas Bogendoerfer , Thomas Gleixner , "Vasily Gorbik" , Will Deacon , Zi Yan , , , , , , , , , , , , , , , , Subject: Re: [PATCH v3 00/26] mm: introduce numa_memblks Message-ID: <20240802174443.0000710c@Huawei.com> In-Reply-To: <20240801060826.559858-1-rppt@kernel.org> References: <20240801060826.559858-1-rppt@kernel.org> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-ClientProxiedBy: lhrpeml500004.china.huawei.com (7.191.163.9) To lhrpeml500005.china.huawei.com (7.191.163.240) On Thu, 1 Aug 2024 09:08:00 +0300 Mike Rapoport wrote: > From: "Mike Rapoport (Microsoft)" > > Hi, > > Following the discussion about handling of CXL fixed memory windows on > arm64 [1] I decided to bite the bullet and move numa_memblks from x86 to > the generic code so they will be available on arm64/riscv and maybe on > loongarch sometime later. > > While it could be possible to use memblock to describe CXL memory windows, > it currently lacks notion of unpopulated memory ranges and numa_memblks > does implement this. > > Another reason to make numa_memblks generic is that both arch_numa (arm64 > and riscv) and loongarch use trimmed copy of x86 code although there is no > fundamental reason why the same code cannot be used on all these platforms. > Having numa_memblks in mm/ will make it's interaction with ACPI and FDT > more consistent and I believe will reduce maintenance burden. > > And with generic numa_memblks it is (almost) straightforward to enable NUMA > emulation on arm64 and riscv. Tested-by: Jonathan Cameron #arm64 + CXL via QEMU With that one fix in patch 7. Feel free to figure out which patches actually got tested by that (or tag them all - I'll pretend I tested ip27 :) Jonathan From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 07EB2C3DA4A for ; Fri, 2 Aug 2024 16:45:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Subject:CC:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=bbwnn51imNzvLYs2jV4x2u8oo5vMrVLndpMm5Sq6qFw=; b=oiM2JI477lnhyT /x8geDLVhu9L9X+0zhk2gUy3x0N9a0PWn87uRwc3J+cFHI6/bQTdZHL7Y+j7+6LPiXNsY8uoayvXq //7kqMDWvCNC3YyqhdpeBbjpQjemAByrUX827XGk3Pa9aB98CloJ0U9/7kAP1Ens2LR134Kbu1psD T0UIgVmtWWjBeU7OaMAFy1tNmcJJDndFAfCCC199TK9sYvK7oRL2d4fUwDcWSGVkQBlFNeQedGcJ2 v7BwHifDqKWZnSSsxjVjPEnyN9/ibzG2IMsx+pZDTrATjNm4fDRdI4Kc0a6TQSqdmGh2OTN1HNHpZ grdYR289ciG0nFrWtTuQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sZvPB-00000009VhS-42jG; Fri, 02 Aug 2024 16:45:25 +0000 Received: from frasgout.his.huawei.com ([185.176.79.56]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sZvOf-00000009VYN-0sVR; Fri, 02 Aug 2024 16:44:55 +0000 Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4WbBTD2kfFz6K5YZ; Sat, 3 Aug 2024 00:42:40 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id A6A811404F5; Sat, 3 Aug 2024 00:44:44 +0800 (CST) Received: from localhost (10.203.177.66) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Fri, 2 Aug 2024 17:44:43 +0100 Date: Fri, 2 Aug 2024 17:44:43 +0100 From: Jonathan Cameron To: Mike Rapoport CC: , Alexander Gordeev , Andreas Larsson , "Andrew Morton" , Arnd Bergmann , "Borislav Petkov" , Catalin Marinas , Christophe Leroy , Dan Williams , Dave Hansen , David Hildenbrand , "David S. Miller" , Davidlohr Bueso , "Greg Kroah-Hartman" , Heiko Carstens , Huacai Chen , Ingo Molnar , Jiaxun Yang , "John Paul Adrian Glaubitz" , Jonathan Corbet , Michael Ellerman , Palmer Dabbelt , "Rafael J. Wysocki" , Rob Herring , Samuel Holland , Thomas Bogendoerfer , Thomas Gleixner , "Vasily Gorbik" , Will Deacon , Zi Yan , , , , , , , , , , , , , , , , Subject: Re: [PATCH v3 00/26] mm: introduce numa_memblks Message-ID: <20240802174443.0000710c@Huawei.com> In-Reply-To: <20240801060826.559858-1-rppt@kernel.org> References: <20240801060826.559858-1-rppt@kernel.org> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 X-Originating-IP: [10.203.177.66] X-ClientProxiedBy: lhrpeml500004.china.huawei.com (7.191.163.9) To lhrpeml500005.china.huawei.com (7.191.163.240) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240802_094453_545766_9998E66B X-CRM114-Status: GOOD ( 14.01 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Thu, 1 Aug 2024 09:08:00 +0300 Mike Rapoport wrote: > From: "Mike Rapoport (Microsoft)" > > Hi, > > Following the discussion about handling of CXL fixed memory windows on > arm64 [1] I decided to bite the bullet and move numa_memblks from x86 to > the generic code so they will be available on arm64/riscv and maybe on > loongarch sometime later. > > While it could be possible to use memblock to describe CXL memory windows, > it currently lacks notion of unpopulated memory ranges and numa_memblks > does implement this. > > Another reason to make numa_memblks generic is that both arch_numa (arm64 > and riscv) and loongarch use trimmed copy of x86 code although there is no > fundamental reason why the same code cannot be used on all these platforms. > Having numa_memblks in mm/ will make it's interaction with ACPI and FDT > more consistent and I believe will reduce maintenance burden. > > And with generic numa_memblks it is (almost) straightforward to enable NUMA > emulation on arm64 and riscv. Tested-by: Jonathan Cameron #arm64 + CXL via QEMU With that one fix in patch 7. Feel free to figure out which patches actually got tested by that (or tag them all - I'll pretend I tested ip27 :) Jonathan _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 8C01BC52D6F for ; Fri, 2 Aug 2024 16:45:18 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [IPv6:::1]) by lists.ozlabs.org (Postfix) with ESMTP id 4WbBXD58YKz3fqS for ; Sat, 3 Aug 2024 02:45:16 +1000 (AEST) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=Huawei.com Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=huawei.com (client-ip=185.176.79.56; helo=frasgout.his.huawei.com; envelope-from=jonathan.cameron@huawei.com; receiver=lists.ozlabs.org) Received: from frasgout.his.huawei.com (frasgout.his.huawei.com [185.176.79.56]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4WbBWm5MBRz3cW3 for ; Sat, 3 Aug 2024 02:44:50 +1000 (AEST) Received: from mail.maildlp.com (unknown [172.18.186.231]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4WbBTD2kfFz6K5YZ; Sat, 3 Aug 2024 00:42:40 +0800 (CST) Received: from lhrpeml500005.china.huawei.com (unknown [7.191.163.240]) by mail.maildlp.com (Postfix) with ESMTPS id A6A811404F5; Sat, 3 Aug 2024 00:44:44 +0800 (CST) Received: from localhost (10.203.177.66) by lhrpeml500005.china.huawei.com (7.191.163.240) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Fri, 2 Aug 2024 17:44:43 +0100 Date: Fri, 2 Aug 2024 17:44:43 +0100 From: Jonathan Cameron To: Mike Rapoport Subject: Re: [PATCH v3 00/26] mm: introduce numa_memblks Message-ID: <20240802174443.0000710c@Huawei.com> In-Reply-To: <20240801060826.559858-1-rppt@kernel.org> References: <20240801060826.559858-1-rppt@kernel.org> Organization: Huawei Technologies Research and Development (UK) Ltd. X-Mailer: Claws Mail 4.1.0 (GTK 3.24.33; x86_64-w64-mingw32) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit X-Originating-IP: [10.203.177.66] X-ClientProxiedBy: lhrpeml500004.china.huawei.com (7.191.163.9) To lhrpeml500005.china.huawei.com (7.191.163.240) X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nvdimm@lists.linux.dev, x86@kernel.org, Andreas Larsson , Catalin Marinas , Dave Hansen , David Hildenbrand , Jiaxun Yang , linux-mips@vger.kernel.org, linux-mm@kvack.org, sparclinux@vger.kernel.org, Alexander Gordeev , Will Deacon , Thomas Gleixner , linux-arch@vger.kernel.org, Rob Herring , Davidlohr Bueso , Vasily Gorbik , Jonathan Corbet , linux-sh@vger.kernel.org, Huacai Chen , Christophe Leroy , linux-acpi@vger.kernel.org, Ingo Molnar , Zi Yan , devicetree@vger.kernel.org, Arnd Bergmann , linux-s390@vger.kernel.org, Heiko Carstens , Borislav Petkov , linux-cxl@vger.kernel.org, loongarch@lists.linux.dev, John Paul Adrian Glaubitz , Dan Williams , linux-arm-kernel@lists.infradead.org, Thomas Bogendoerfer , Greg Kroah-Hartman , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, Samuel Holland , linux-riscv@lists.infradead.org, Palmer Dabbelt , "Rafael J. Wysocki" , Andrew Morton , linuxppc-dev@lists.ozlabs.org, "David S. Miller" Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On Thu, 1 Aug 2024 09:08:00 +0300 Mike Rapoport wrote: > From: "Mike Rapoport (Microsoft)" > > Hi, > > Following the discussion about handling of CXL fixed memory windows on > arm64 [1] I decided to bite the bullet and move numa_memblks from x86 to > the generic code so they will be available on arm64/riscv and maybe on > loongarch sometime later. > > While it could be possible to use memblock to describe CXL memory windows, > it currently lacks notion of unpopulated memory ranges and numa_memblks > does implement this. > > Another reason to make numa_memblks generic is that both arch_numa (arm64 > and riscv) and loongarch use trimmed copy of x86 code although there is no > fundamental reason why the same code cannot be used on all these platforms. > Having numa_memblks in mm/ will make it's interaction with ACPI and FDT > more consistent and I believe will reduce maintenance burden. > > And with generic numa_memblks it is (almost) straightforward to enable NUMA > emulation on arm64 and riscv. Tested-by: Jonathan Cameron #arm64 + CXL via QEMU With that one fix in patch 7. Feel free to figure out which patches actually got tested by that (or tag them all - I'll pretend I tested ip27 :) Jonathan