From patchwork Thu May 7 14:01:24 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 11533867 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2771681 for ; Thu, 7 May 2020 14:02:15 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0CA6120838 for ; Thu, 7 May 2020 14:02:15 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="cA2dOUFy" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726660AbgEGOCO (ORCPT ); Thu, 7 May 2020 10:02:14 -0400 Received: from us-smtp-2.mimecast.com ([207.211.31.81]:28597 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726408AbgEGOCN (ORCPT ); Thu, 7 May 2020 10:02:13 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1588860131; 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=YnnUFsND7O7jqtL6msM8nwBMUisTSmUw25RGNt2JJrs=; b=cA2dOUFyzz3xZhTTLdSIVp2NdSKgyvVyjJ7QTDkMFgWT9gTFSDzCrdeUyfPikRSQMu3xGf Mq74s3CzLtsnht/MY5YB3umFiMFUBEIhpmuc16oAZyq+CtENaxIBF23J2auFnsQThh6Tyl aRd0kk9AqCyan2cnxq6EYo9YLniVyaY= 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-103-rdP8lYCVMWC9u4yrElCVAQ-1; Thu, 07 May 2020 10:02:03 -0400 X-MC-Unique: rdP8lYCVMWC9u4yrElCVAQ-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 C4169835B45; Thu, 7 May 2020 14:01:58 +0000 (UTC) Received: from t480s.redhat.com (ovpn-113-245.ams2.redhat.com [10.36.113.245]) by smtp.corp.redhat.com (Postfix) with ESMTP id AF26260FB9; Thu, 7 May 2020 14:01:40 +0000 (UTC) From: David Hildenbrand To: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org, virtio-dev@lists.oasis-open.org, virtualization@lists.linux-foundation.org, kvm@vger.kernel.org, Michal Hocko , Andrew Morton , "Michael S . Tsirkin" , David Hildenbrand , Alexander Duyck , Alexander Potapenko , Anshuman Khandual , Anthony Yznaga , Dan Williams , Dave Young , Igor Mammedov , Jason Wang , Johannes Weiner , Juergen Gross , Konrad Rzeszutek Wilk , Len Brown , Mel Gorman , Michal Hocko , Mike Rapoport , Oscar Salvador , Oscar Salvador , Pankaj Gupta , Pavel Tatashin , Pavel Tatashin , Pingfan Liu , Qian Cai , "Rafael J. Wysocki" , "Rafael J. Wysocki" , Stefan Hajnoczi , Vlastimil Babka , Wei Yang Subject: [PATCH v4 00/15] virtio-mem: paravirtualized memory Date: Thu, 7 May 2020 16:01:24 +0200 Message-Id: <20200507140139.17083-1-david@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org This series is based on v5.7-rc4. The patches are located at: https://github.com/davidhildenbrand/linux.git virtio-mem-v4 This is basically a resend of v3 [1], now based on v5.7-rc4 and restested. One patch was reshuffled and two ACKs I missed to add were added. The rebase did not require any modifications to patches. Details about virtio-mem can be found in the cover letter of v2 [2]. A basic QEMU implementation was posted yesterday [3]. [1] https://lkml.kernel.org/r/20200507103119.11219-1-david@redhat.com [2] https://lkml.kernel.org/r/20200311171422.10484-1-david@redhat.com [3] https://lkml.kernel.org/r/20200506094948.76388-1-david@redhat.com v3 -> v4: - Move "MAINTAINERS: Add myself as virtio-mem maintainer" to #2 - Add two ACKs from Andrew (in reply to v2) -- "mm: Allow to offline unmovable PageOffline() pages via ..." -- "mm/memory_hotplug: Introduce offline_and_remove_memory()" v2 -> v3: - "virtio-mem: Paravirtualized memory hotplug" -- Include "linux/slab.h" to fix build issues -- Remember the "region_size", helpful for patch #11 -- Minor simplifaction in virtio_mem_overlaps_range() -- Use notifier_from_errno() instead of notifier_to_errno() in notifier -- More reliable check for added memory when unloading the driver - "virtio-mem: Allow to specify an ACPI PXM as nid" -- Also print the nid - Added patch #11-#15 David Hildenbrand (15): virtio-mem: Paravirtualized memory hotplug MAINTAINERS: Add myself as virtio-mem maintainer virtio-mem: Allow to specify an ACPI PXM as nid virtio-mem: Paravirtualized memory hotunplug part 1 virtio-mem: Paravirtualized memory hotunplug part 2 mm: Allow to offline unmovable PageOffline() pages via MEM_GOING_OFFLINE virtio-mem: Allow to offline partially unplugged memory blocks mm/memory_hotplug: Introduce offline_and_remove_memory() virtio-mem: Offline and remove completely unplugged memory blocks virtio-mem: Better retry handling virtio-mem: Add parent resource for all added "System RAM" virtio-mem: Drop manual check for already present memory virtio-mem: Unplug subblocks right-to-left virtio-mem: Use -ETXTBSY as error code if the device is busy virtio-mem: Try to unplug the complete online memory block first MAINTAINERS | 7 + drivers/acpi/numa/srat.c | 1 + drivers/virtio/Kconfig | 17 + drivers/virtio/Makefile | 1 + drivers/virtio/virtio_mem.c | 1962 +++++++++++++++++++++++++++++++ include/linux/memory_hotplug.h | 1 + include/linux/page-flags.h | 10 + include/uapi/linux/virtio_ids.h | 1 + include/uapi/linux/virtio_mem.h | 208 ++++ mm/memory_hotplug.c | 81 +- mm/page_alloc.c | 26 + mm/page_isolation.c | 9 + 12 files changed, 2314 insertions(+), 10 deletions(-) create mode 100644 drivers/virtio/virtio_mem.c create mode 100644 include/uapi/linux/virtio_mem.h