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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C844FC433F5 for ; Mon, 27 Sep 2021 15:05:50 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id 972836108E for ; Mon, 27 Sep 2021 15:05:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 972836108E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org 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:Message-Id:Date:Subject:Cc :To:From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=XeqRekmYyBGHRyKIqKgxwWRCyXNKXbAUdr76TYsaELM=; b=VQutsV0hgY6ZnK LwTCT7GA/dMlnvxu1A34OZPg3yyFmWWLlbpO5YPj3MNo4jJWoFTOessqe5cSbNALxi7U1Qfw2QZPJ WrQlpTB3pTB1xGcH/wHBqiYZ62xeOc+FReXfNg9HNT23tMZ/waAeE/SVj4CIrjuTEx2TqfTJ7kQSs 7zNPLzKsQMJ8QbkajSr5H2ERg5VLOWuuqGKzO0LnqIkphwnxEscBubKKVkzH2haG93qj+89QV3vPC S8g5HYfo0fe8aCrmMsq1WKpJEEdZMPUzvMVLC4CF+NbTyHWo2zST7MLpzcOocQtc7bYXH9rABpumD bZs7pJ3tW5rT2d8TgCsA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mUsCU-0031af-1t; Mon, 27 Sep 2021 15:05:50 +0000 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mUsCP-0031Uo-2s for linux-snps-arc@lists.infradead.org; Mon, 27 Sep 2021 15:05:46 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1632755141; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=C3epFIds1GdiZHzRVp8oQ/YE01ZWNz++UB0u9toC/UY=; b=iUNNZRsQsH+gbJ0cHC14zkRNjy5qXajHBNvOSxvk74j9Nqhv03vCo3Mdv8/boM7fhb5715 HSaX5PC1kihgoAQuqB9AU/9ttDw6NRAxfWZJxFnBHjPj7w0zajIFjE0GQGR1I+Dba6H5vd eg/MpslAJjWhsL7TwH4/oXzvzFJ2+9E= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-598-wESedMfYNS2jvH245K4Uwg-1; Mon, 27 Sep 2021 11:05:39 -0400 X-MC-Unique: wESedMfYNS2jvH245K4Uwg-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 98FCA100C612; Mon, 27 Sep 2021 15:05:36 +0000 (UTC) Received: from t480s.redhat.com (unknown [10.39.193.71]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7320860C13; Mon, 27 Sep 2021 15:05:19 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: David Hildenbrand , Andrew Morton , Mike Rapoport , Michal Hocko , Oscar Salvador , Jianyong Wu , "Aneesh Kumar K . V" , Vineet Gupta , Geert Uytterhoeven , Huacai Chen , Jiaxun Yang , Thomas Bogendoerfer , Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Eric Biederman , Arnd Bergmann , linux-snps-arc@lists.infradead.org, linux-ia64@vger.kernel.org, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-s390@vger.kernel.org, linux-mm@kvack.org, kexec@lists.infradead.org Subject: [PATCH v1 0/4] mm/memory_hotplug: full support for Date: Mon, 27 Sep 2021 17:05:14 +0200 Message-Id: <20210927150518.8607-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210927_080545_216480_666E071A X-CRM114-Status: GOOD ( 13.05 ) X-BeenThere: linux-snps-arc@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux on Synopsys ARC Processors List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-snps-arc" Errors-To: linux-snps-arc-bounces+linux-snps-arc=archiver.kernel.org@lists.infradead.org Architectures that require CONFIG_ARCH_KEEP_MEMBLOCK=y, such as arm64, don't cleanly support add_memory_driver_managed() yet. Most prominently, kexec_file can still end up placing images on such driver-managed memory, resulting in undesired behavior. Teaching kexec to not place images on driver-managed memory is especially relevant for virtio-mem. Details can be found in commit 7b7b27214bba ("mm/memory_hotplug: introduce add_memory_driver_managed()"). Extend memblock with a new flag and set it from memory hotplug code when applicable. This is required to fully support virtio-mem on arm64, making also kexec_file behave like on x86-64. Alternative A: Extend kexec_walk_memblock() to consult the kernel resource tree whether IORESOURCE_SYSRAM_DRIVER_MANAGED is set. This feels wrong, because the goal was to rely on memblock and not the resource tree. Alternative B: Reuse MEMBLOCK_HOTPLUG. MEMBLOCK_HOTPLUG serves a different purpose, though. Cc: Andrew Morton Cc: Mike Rapoport Cc: Michal Hocko Cc: Oscar Salvador Cc: Jianyong Wu Cc: Aneesh Kumar K.V Cc: Vineet Gupta Cc: Geert Uytterhoeven Cc: Huacai Chen Cc: Jiaxun Yang Cc: Thomas Bogendoerfer Cc: Heiko Carstens Cc: Vasily Gorbik Cc: Christian Borntraeger Cc: Eric Biederman Cc: Arnd Bergmann Cc: linux-snps-arc@lists.infradead.org Cc: linux-ia64@vger.kernel.org Cc: linux-m68k@lists.linux-m68k.org Cc: linux-mips@vger.kernel.org Cc: linux-s390@vger.kernel.org Cc: linux-mm@kvack.org Cc: kexec@lists.infradead.org David Hildenbrand (4): mm/memory_hotplug: handle memblock_add_node() failures in add_memory_resource() memblock: allow to specify flags with memblock_add_node() memblock: add MEMBLOCK_DRIVER_MANAGED to mimic IORESOURCE_SYSRAM_DRIVER_MANAGED mm/memory_hotplug: indicate MEMBLOCK_DRIVER_MANAGED with IORESOURCE_SYSRAM_DRIVER_MANAGED arch/arc/mm/init.c | 4 ++-- arch/ia64/mm/contig.c | 2 +- arch/ia64/mm/init.c | 2 +- arch/m68k/mm/mcfmmu.c | 3 ++- arch/m68k/mm/motorola.c | 6 ++++-- arch/mips/loongson64/init.c | 4 +++- arch/mips/sgi-ip27/ip27-memory.c | 3 ++- arch/s390/kernel/setup.c | 3 ++- include/linux/memblock.h | 19 ++++++++++++++++--- include/linux/mm.h | 2 +- kernel/kexec_file.c | 5 +++++ mm/memblock.c | 13 +++++++++---- mm/memory_hotplug.c | 11 +++++++++-- 13 files changed, 57 insertions(+), 20 deletions(-) base-commit: 5816b3e6577eaa676ceb00a848f0fd65fe2adc29 -- 2.31.1 _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc