From patchwork Thu May 17 08:15:26 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: David Hildenbrand X-Patchwork-Id: 915190 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=redhat.com Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 40mky34S7cz9s3x for ; Thu, 17 May 2018 18:30:03 +1000 (AEST) Received: from localhost ([::1]:42208 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fJEIT-0004vo-8E for incoming@patchwork.ozlabs.org; Thu, 17 May 2018 04:30:01 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:49559) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1fJE57-0002xF-AY for qemu-devel@nongnu.org; Thu, 17 May 2018 04:16:14 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1fJE52-00034Y-B7 for qemu-devel@nongnu.org; Thu, 17 May 2018 04:16:13 -0400 Received: from mx3-rdu2.redhat.com ([66.187.233.73]:54462 helo=mx1.redhat.com) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1fJE52-00034K-5Z; Thu, 17 May 2018 04:16:08 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id C3C0B81FE145; Thu, 17 May 2018 08:16:07 +0000 (UTC) Received: from t460s.redhat.com (ovpn-117-24.ams2.redhat.com [10.36.117.24]) by smtp.corp.redhat.com (Postfix) with ESMTP id 4262B215CDB7; Thu, 17 May 2018 08:16:05 +0000 (UTC) From: David Hildenbrand To: qemu-devel@nongnu.org Date: Thu, 17 May 2018 10:15:26 +0200 Message-Id: <20180517081527.14410-14-david@redhat.com> In-Reply-To: <20180517081527.14410-1-david@redhat.com> References: <20180517081527.14410-1-david@redhat.com> X-Scanned-By: MIMEDefang 2.78 on 10.11.54.6 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Thu, 17 May 2018 08:16:07 +0000 (UTC) X-Greylist: inspected by milter-greylist-4.5.16 (mx1.redhat.com [10.11.55.8]); Thu, 17 May 2018 08:16:07 +0000 (UTC) for IP:'10.11.54.6' DOMAIN:'int-mx06.intmail.prod.int.rdu2.redhat.com' HELO:'smtp.corp.redhat.com' FROM:'david@redhat.com' RCPT:'' X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 66.187.233.73 Subject: [Qemu-devel] [PATCH v4 13/14] memory-device: factor out unplug into hotplug handler X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Pankaj Gupta , Eduardo Habkost , "Michael S . Tsirkin" , Cornelia Huck , David Hildenbrand , Markus Armbruster , Alexander Graf , Christian Borntraeger , qemu-s390x@nongnu.org, qemu-ppc@nongnu.org, Paolo Bonzini , Marcel Apfelbaum , Igor Mammedov , Luiz Capitulino , David Gibson , Richard Henderson Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Let's move the unplug logic into the applicable hotplug handler for pc and spapr. We'll move the plug logic next, then this will look more symmetrical in the hotplug handlers. Signed-off-by: David Hildenbrand --- hw/i386/pc.c | 17 ++++++++++++++++- hw/mem/memory-device.c | 14 ++++++++++++-- hw/mem/pc-dimm.c | 2 -- hw/mem/trace-events | 2 ++ hw/ppc/spapr.c | 16 +++++++++++++++- include/hw/mem/memory-device.h | 2 +- 6 files changed, 46 insertions(+), 7 deletions(-) diff --git a/hw/i386/pc.c b/hw/i386/pc.c index 61f1537e14..426fb534c2 100644 --- a/hw/i386/pc.c +++ b/hw/i386/pc.c @@ -2044,6 +2044,12 @@ static void pc_machine_device_plug_cb(HotplugHandler *hotplug_dev, } else if (dev->parent_bus && dev->parent_bus->hotplug_handler) { hotplug_handler_plug(dev->parent_bus->hotplug_handler, dev, &local_err); } + + if (local_err) { + if (object_dynamic_cast(OBJECT(dev), TYPE_MEMORY_DEVICE)) { + memory_device_unplug(MACHINE(hotplug_dev), MEMORY_DEVICE(dev)); + } + } error_propagate(errp, local_err); } @@ -2080,7 +2086,16 @@ static void pc_machine_device_unplug_cb(HotplugHandler *hotplug_dev, error_setg(&local_err, "acpi: device unplug for not supported device" " type: %s", object_get_typename(OBJECT(dev))); } - error_propagate(errp, local_err); + + if (local_err) { + error_propagate(errp, local_err); + return; + } + + /* first stage hotplug handler */ + if (object_dynamic_cast(OBJECT(dev), TYPE_MEMORY_DEVICE)) { + memory_device_unplug(MACHINE(hotplug_dev), MEMORY_DEVICE(dev)); + } } static HotplugHandler *pc_get_hotpug_handler(MachineState *machine, diff --git a/hw/mem/memory-device.c b/hw/mem/memory-device.c index d22c91993f..8f10d613ea 100644 --- a/hw/mem/memory-device.c +++ b/hw/mem/memory-device.c @@ -17,6 +17,7 @@ #include "qemu/range.h" #include "hw/virtio/vhost.h" #include "sysemu/kvm.h" +#include "trace.h" static gint memory_device_addr_sort(gconstpointer a, gconstpointer b) { @@ -246,12 +247,21 @@ void memory_device_plug_region(MachineState *ms, MemoryRegion *mr, addr - ms->device_memory->base, mr); } -void memory_device_unplug_region(MachineState *ms, MemoryRegion *mr) +void memory_device_unplug(MachineState *ms, MemoryDeviceState *md) { - /* we expect a previous call to memory_device_get_free_addr() */ + const MemoryDeviceClass *mdc = MEMORY_DEVICE_GET_CLASS(md); + MemoryRegion *mr = mdc->get_memory_region(md); + + /* we expect a previous call to memory_device_pre_plug */ g_assert(ms->device_memory); + if (!memory_region_is_mapped(mr)) { + return; + } + memory_region_del_subregion(&ms->device_memory->mr, mr); + trace_memory_device_unassign_address(mdc->get_addr(md)); + mdc->set_addr(md, 0); } static const TypeInfo memory_device_info = { diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c index 5e2e3263ab..d487bb513b 100644 --- a/hw/mem/pc-dimm.c +++ b/hw/mem/pc-dimm.c @@ -94,9 +94,7 @@ void pc_dimm_memory_unplug(DeviceState *dev, MachineState *machine) PCDIMMDevice *dimm = PC_DIMM(dev); PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(dimm); MemoryRegion *vmstate_mr = ddc->get_vmstate_memory_region(dimm); - MemoryRegion *mr = ddc->get_memory_region(dimm, &error_abort); - memory_device_unplug_region(machine, mr); vmstate_unregister_ram(vmstate_mr, dev); } diff --git a/hw/mem/trace-events b/hw/mem/trace-events index e150dcc497..a661ee49a3 100644 --- a/hw/mem/trace-events +++ b/hw/mem/trace-events @@ -3,3 +3,5 @@ # hw/mem/pc-dimm.c mhp_pc_dimm_assigned_slot(int slot) "%d" mhp_pc_dimm_assigned_address(uint64_t addr) "0x%"PRIx64 +# hw/mem/memory-device.c +memory_device_unassign_address(uint64_t addr) "0x%"PRIx64 diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 562712def2..abdd38a6b5 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -3621,6 +3621,11 @@ static void spapr_machine_device_plug(HotplugHandler *hotplug_dev, hotplug_handler_plug(dev->parent_bus->hotplug_handler, dev, &local_err); } out: + if (local_err) { + if (object_dynamic_cast(OBJECT(dev), TYPE_MEMORY_DEVICE)) { + memory_device_unplug(MACHINE(hotplug_dev), MEMORY_DEVICE(dev)); + } + } error_propagate(errp, local_err); } @@ -3638,7 +3643,16 @@ static void spapr_machine_device_unplug(HotplugHandler *hotplug_dev, hotplug_handler_unplug(dev->parent_bus->hotplug_handler, dev, &local_err); } - error_propagate(errp, local_err); + + if (local_err) { + error_propagate(errp, local_err); + return; + } + + /* first stage hotplug handler */ + if (object_dynamic_cast(OBJECT(dev), TYPE_MEMORY_DEVICE)) { + memory_device_unplug(MACHINE(hotplug_dev), MEMORY_DEVICE(dev)); + } } static void spapr_machine_device_unplug_request(HotplugHandler *hotplug_dev, diff --git a/include/hw/mem/memory-device.h b/include/hw/mem/memory-device.h index 3a4e9edc92..b8365959e7 100644 --- a/include/hw/mem/memory-device.h +++ b/include/hw/mem/memory-device.h @@ -58,6 +58,6 @@ uint64_t memory_device_get_free_addr(MachineState *ms, const uint64_t *hint, Error **errp); void memory_device_plug_region(MachineState *ms, MemoryRegion *mr, uint64_t addr); -void memory_device_unplug_region(MachineState *ms, MemoryRegion *mr); +void memory_device_unplug(MachineState *ms, MemoryDeviceState *md); #endif