From patchwork Wed Apr 26 21:31:24 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Henrique Barboza X-Patchwork-Id: 9702089 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 704E9603F4 for ; Wed, 26 Apr 2017 21:35:22 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 611A9285E7 for ; Wed, 26 Apr 2017 21:35:22 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 56028285EA; Wed, 26 Apr 2017 21:35:22 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B09A4285EB for ; Wed, 26 Apr 2017 21:35:21 +0000 (UTC) Received: from localhost ([::1]:57241 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d3Uan-0005Jy-12 for patchwork-qemu-devel@patchwork.kernel.org; Wed, 26 Apr 2017 17:35:21 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:48933) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1d3UXP-0002tp-6G for qemu-devel@nongnu.org; Wed, 26 Apr 2017 17:31:52 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1d3UXN-0003Zj-QQ for qemu-devel@nongnu.org; Wed, 26 Apr 2017 17:31:51 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:37188 helo=mx0a-001b2d01.pphosted.com) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1d3UXN-0003ZR-LQ for qemu-devel@nongnu.org; Wed, 26 Apr 2017 17:31:49 -0400 Received: from pps.filterd (m0098421.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v3QLSlwI100376 for ; Wed, 26 Apr 2017 17:31:49 -0400 Received: from e24smtp01.br.ibm.com (e24smtp01.br.ibm.com [32.104.18.85]) by mx0a-001b2d01.pphosted.com with ESMTP id 2a2yhqabsx-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 26 Apr 2017 17:31:48 -0400 Received: from localhost by e24smtp01.br.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! 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Violators will be prosecuted; Wed, 26 Apr 2017 18:31:45 -0300 Received: from d24av01.br.ibm.com (d24av01.br.ibm.com [9.8.31.91]) by d24relay03.br.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id v3QLVi9C18219162; Wed, 26 Apr 2017 18:31:44 -0300 Received: from d24av01.br.ibm.com (localhost [127.0.0.1]) by d24av01.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id v3QLViMU017252; Wed, 26 Apr 2017 18:31:44 -0300 Received: from localhost.localdomain ([9.85.186.39]) by d24av01.br.ibm.com (8.14.4/8.14.4/NCO v10.0 AVin) with ESMTP id v3QLVWkW017183; Wed, 26 Apr 2017 18:31:42 -0300 From: Daniel Henrique Barboza To: qemu-devel@nongnu.org Date: Wed, 26 Apr 2017 18:31:24 -0300 X-Mailer: git-send-email 2.9.3 In-Reply-To: <20170426213124.29064-1-danielhb@linux.vnet.ibm.com> References: <20170426213124.29064-1-danielhb@linux.vnet.ibm.com> X-TM-AS-MML: disable x-cbid: 17042621-1523-0000-0000-00000299A785 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17042621-1524-0000-0000-00002A2FD75D Message-Id: <20170426213124.29064-5-danielhb@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:, , definitions=2017-04-26_14:, , signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=1 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1703280000 definitions=main-1704260353 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 148.163.158.5 Subject: [Qemu-devel] [PATCH 4/4] migration: spapr: migrate pending_events of spapr state 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: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Jianjun Duan In racing situations between hotplug events and migration operation, a rtas hotplug event could have not yet be delivered to the source guest when migration is started. In this case the pending_events of spapr state need be transmitted to the target so that the hotplug event can be finished on the target. All the different fields of the events are encoded as defined by PAPR. We can migrate them as uint8_t binary stream without any concerns about data padding or endianess. pending_events is put in a subsection in the spapr state VMSD to make sure migration across different versions is not broken. Signed-off-by: Jianjun Duan Signed-off-by: Daniel Henrique Barboza --- hw/ppc/spapr.c | 33 +++++++++++++++++++++++++++++++++ hw/ppc/spapr_events.c | 24 +++++++++++++----------- include/hw/ppc/spapr.h | 3 ++- 3 files changed, 48 insertions(+), 12 deletions(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 2a788dc..bc4ca91 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1468,6 +1468,38 @@ static const VMStateDescription vmstate_spapr_ccs_list = { }, }; +static bool spapr_pending_events_needed(void *opaque) +{ + sPAPRMachineState *spapr = (sPAPRMachineState *)opaque; + return !QTAILQ_EMPTY(&spapr->pending_events); +} + +static const VMStateDescription vmstate_spapr_event_entry = { + .name = "spapr_event_log_entry", + .version_id = 1, + .minimum_version_id = 1, + .fields = (VMStateField[]) { + VMSTATE_INT32(log_type, sPAPREventLogEntry), + VMSTATE_BOOL(exception, sPAPREventLogEntry), + VMSTATE_UINT32(data_size, sPAPREventLogEntry), + VMSTATE_VARRAY_UINT32_ALLOC(data, sPAPREventLogEntry, data_size, + 0, vmstate_info_uint8, uint8_t), + VMSTATE_END_OF_LIST() + }, +}; + +static const VMStateDescription vmstate_spapr_pending_events = { + .name = "spapr_pending_events", + .version_id = 1, + .minimum_version_id = 1, + .needed = spapr_pending_events_needed, + .fields = (VMStateField[]) { + VMSTATE_QTAILQ_V(pending_events, sPAPRMachineState, 1, + vmstate_spapr_event_entry, sPAPREventLogEntry, next), + VMSTATE_END_OF_LIST() + }, +}; + static bool spapr_ov5_cas_needed(void *opaque) { sPAPRMachineState *spapr = opaque; @@ -1567,6 +1599,7 @@ static const VMStateDescription vmstate_spapr = { &vmstate_spapr_ov5_cas, &vmstate_spapr_patb_entry, &vmstate_spapr_ccs_list, + &vmstate_spapr_pending_events, NULL } }; diff --git a/hw/ppc/spapr_events.c b/hw/ppc/spapr_events.c index f0b28d8..70c7cfc 100644 --- a/hw/ppc/spapr_events.c +++ b/hw/ppc/spapr_events.c @@ -342,7 +342,8 @@ static int rtas_event_log_to_irq(sPAPRMachineState *spapr, int log_type) return source->irq; } -static void rtas_event_log_queue(int log_type, void *data, bool exception) +static void rtas_event_log_queue(int log_type, void *data, bool exception, + int data_size) { sPAPRMachineState *spapr = SPAPR_MACHINE(qdev_get_machine()); sPAPREventLogEntry *entry = g_new(sPAPREventLogEntry, 1); @@ -351,6 +352,7 @@ static void rtas_event_log_queue(int log_type, void *data, bool exception) entry->log_type = log_type; entry->exception = exception; entry->data = data; + entry->data_size = data_size; QTAILQ_INSERT_TAIL(&spapr->pending_events, entry, next); } @@ -445,6 +447,7 @@ static void spapr_powerdown_req(Notifier *n, void *opaque) struct rtas_event_log_v6_mainb *mainb; struct rtas_event_log_v6_epow *epow; struct epow_log_full *new_epow; + uint32_t data_size; new_epow = g_malloc0(sizeof(*new_epow)); hdr = &new_epow->hdr; @@ -453,14 +456,13 @@ static void spapr_powerdown_req(Notifier *n, void *opaque) mainb = &new_epow->mainb; epow = &new_epow->epow; + data_size = sizeof(*new_epow); hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 | RTAS_LOG_SEVERITY_EVENT | RTAS_LOG_DISPOSITION_NOT_RECOVERED | RTAS_LOG_OPTIONAL_PART_PRESENT | RTAS_LOG_TYPE_EPOW); - hdr->extended_length = cpu_to_be32(sizeof(*new_epow) - - sizeof(new_epow->hdr)); - + hdr->extended_length = cpu_to_be32(data_size - sizeof(new_epow->hdr)); spapr_init_v6hdr(v6hdr); spapr_init_maina(maina, 3 /* Main-A, Main-B and EPOW */); @@ -479,7 +481,7 @@ static void spapr_powerdown_req(Notifier *n, void *opaque) epow->event_modifier = RTAS_LOG_V6_EPOW_MODIFIER_NORMAL; epow->extended_modifier = RTAS_LOG_V6_EPOW_XMODIFIER_PARTITION_SPECIFIC; - rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true); + rtas_event_log_queue(RTAS_LOG_TYPE_EPOW, new_epow, true, data_size); qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr), rtas_event_log_to_irq(spapr, @@ -504,6 +506,7 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, struct rtas_event_log_v6_maina *maina; struct rtas_event_log_v6_mainb *mainb; struct rtas_event_log_v6_hp *hp; + uint32_t data_size; new_hp = g_malloc0(sizeof(struct hp_log_full)); hdr = &new_hp->hdr; @@ -512,14 +515,14 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, mainb = &new_hp->mainb; hp = &new_hp->hp; + data_size = sizeof(*new_hp); hdr->summary = cpu_to_be32(RTAS_LOG_VERSION_6 | RTAS_LOG_SEVERITY_EVENT | RTAS_LOG_DISPOSITION_NOT_RECOVERED | RTAS_LOG_OPTIONAL_PART_PRESENT | RTAS_LOG_INITIATOR_HOTPLUG | RTAS_LOG_TYPE_HOTPLUG); - hdr->extended_length = cpu_to_be32(sizeof(*new_hp) - - sizeof(new_hp->hdr)); + hdr->extended_length = cpu_to_be32(data_size - sizeof(new_hp->hdr)); spapr_init_v6hdr(v6hdr); spapr_init_maina(maina, 3 /* Main-A, Main-B, HP */); @@ -572,7 +575,7 @@ static void spapr_hotplug_req_event(uint8_t hp_id, uint8_t hp_action, cpu_to_be32(drc_id->count_indexed.index); } - rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true); + rtas_event_log_queue(RTAS_LOG_TYPE_HOTPLUG, new_hp, true, data_size); qemu_irq_pulse(xics_get_qirq(XICS_FABRIC(spapr), rtas_event_log_to_irq(spapr, @@ -671,8 +674,7 @@ static void check_exception(PowerPCCPU *cpu, sPAPRMachineState *spapr, if (!event) { goto out_no_events; } - - hdr = event->data; + hdr = (struct rtas_error_log *)event->data; event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); if (event_len < len) { @@ -728,7 +730,7 @@ static void event_scan(PowerPCCPU *cpu, sPAPRMachineState *spapr, goto out_no_events; } - hdr = event->data; + hdr = (struct rtas_error_log *)event->data; event_len = be32_to_cpu(hdr->extended_length) + sizeof(*hdr); if (event_len < len) { diff --git a/include/hw/ppc/spapr.h b/include/hw/ppc/spapr.h index 5802f88..fbe1d93 100644 --- a/include/hw/ppc/spapr.h +++ b/include/hw/ppc/spapr.h @@ -599,7 +599,8 @@ sPAPRTCETable *spapr_tce_find_by_liobn(target_ulong liobn); struct sPAPREventLogEntry { int log_type; bool exception; - void *data; + uint8_t *data; + uint32_t data_size; QTAILQ_ENTRY(sPAPREventLogEntry) next; };