From patchwork Mon Sep 14 12:35:04 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg Kurz X-Patchwork-Id: 11773699 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 EED9E14B7 for ; Mon, 14 Sep 2020 12:42:56 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 AA37220771 for ; Mon, 14 Sep 2020 12:42:56 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AA37220771 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=kaod.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:41572 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kHnot-0003nb-Mt for patchwork-qemu-devel@patchwork.kernel.org; Mon, 14 Sep 2020 08:42:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:37796) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kHnhz-0006yE-N6 for qemu-devel@nongnu.org; Mon, 14 Sep 2020 08:35:47 -0400 Received: from us-smtp-delivery-44.mimecast.com ([205.139.111.44]:60426) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kHnhx-0000lw-Tr for qemu-devel@nongnu.org; Mon, 14 Sep 2020 08:35:47 -0400 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-546-WUr8KAl9MNKJV4O3UKnRYw-1; Mon, 14 Sep 2020 08:35:41 -0400 X-MC-Unique: WUr8KAl9MNKJV4O3UKnRYw-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id AF70A18BA288; Mon, 14 Sep 2020 12:35:39 +0000 (UTC) Received: from bahia.redhat.com (ovpn-112-218.ams2.redhat.com [10.36.112.218]) by smtp.corp.redhat.com (Postfix) with ESMTP id 5E0ED10023A7; Mon, 14 Sep 2020 12:35:38 +0000 (UTC) From: Greg Kurz To: qemu-devel@nongnu.org Subject: [PATCH 14/15] spapr: Simplify error handling in spapr_memory_plug() Date: Mon, 14 Sep 2020 14:35:04 +0200 Message-Id: <20200914123505.612812-15-groug@kaod.org> In-Reply-To: <20200914123505.612812-1-groug@kaod.org> References: <20200914123505.612812-1-groug@kaod.org> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=groug@kaod.org X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: kaod.org Received-SPF: softfail client-ip=205.139.111.44; envelope-from=groug@kaod.org; helo=us-smtp-delivery-44.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/14 08:35:13 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -11 X-Spam_score: -1.2 X-Spam_bar: - X-Spam_report: (-1.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_SOFTFAIL=0.665 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Greg Kurz , Vladimir Sementsov-Ogievskiy , qemu-ppc@nongnu.org, Markus Armbruster , David Gibson Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" As recommended in "qapi/error.h", add a bool return value to spapr_add_lmbs() and spapr_add_nvdimm(), and use them instead of local_err in spapr_memory_plug(). Since object_property_get_uint() only returns 0 on failure, use that as well. Also call ERRP_GUARD() to be able to check the status of void function pc_dimm_plug() with *errp. This allows to get rid of the error propagation overhead. Signed-off-by: Greg Kurz --- include/hw/ppc/spapr_nvdimm.h | 2 +- hw/ppc/spapr.c | 35 +++++++++++++---------------------- hw/ppc/spapr_nvdimm.c | 5 +++-- 3 files changed, 17 insertions(+), 25 deletions(-) diff --git a/include/hw/ppc/spapr_nvdimm.h b/include/hw/ppc/spapr_nvdimm.h index b834d82f5545..dc30edece997 100644 --- a/include/hw/ppc/spapr_nvdimm.h +++ b/include/hw/ppc/spapr_nvdimm.h @@ -30,7 +30,7 @@ int spapr_pmem_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, void spapr_dt_persistent_memory(SpaprMachineState *spapr, void *fdt); bool spapr_nvdimm_validate(HotplugHandler *hotplug_dev, NVDIMMDevice *nvdimm, uint64_t size, Error **errp); -void spapr_add_nvdimm(DeviceState *dev, uint64_t slot, Error **errp); +bool spapr_add_nvdimm(DeviceState *dev, uint64_t slot, Error **errp); void spapr_create_nvdimm_dr_connectors(SpaprMachineState *spapr); #endif diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index e813c7cfb949..d6b4de6a1c53 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -3366,7 +3366,7 @@ int spapr_lmb_dt_populate(SpaprDrc *drc, SpaprMachineState *spapr, return 0; } -static void spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, +static bool spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, bool dedicated_hp_event_source, Error **errp) { SpaprDrc *drc; @@ -3387,7 +3387,7 @@ static void spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, addr / SPAPR_MEMORY_BLOCK_SIZE); spapr_drc_detach(drc); } - return; + return false; } if (!hotplugged) { spapr_drc_reset(drc); @@ -3409,12 +3409,13 @@ static void spapr_add_lmbs(DeviceState *dev, uint64_t addr_start, uint64_t size, nr_lmbs); } } + return true; } static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, Error **errp) { - Error *local_err = NULL; + ERRP_GUARD(); SpaprMachineState *ms = SPAPR_MACHINE(hotplug_dev); PCDIMMDevice *dimm = PC_DIMM(dev); uint64_t size, addr, slot; @@ -3422,39 +3423,29 @@ static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, size = memory_device_get_region_size(MEMORY_DEVICE(dev), &error_abort); - pc_dimm_plug(dimm, MACHINE(ms), &local_err); - if (local_err) { - goto out; + pc_dimm_plug(dimm, MACHINE(ms), errp); + if (*errp) { + return; } if (!is_nvdimm) { - addr = object_property_get_uint(OBJECT(dimm), - PC_DIMM_ADDR_PROP, &local_err); - if (local_err) { + addr = object_property_get_uint(OBJECT(dimm), PC_DIMM_ADDR_PROP, errp); + if (!addr || + !spapr_add_lmbs(dev, addr, size, + spapr_ovec_test(ms->ov5_cas, OV5_HP_EVT), errp)) { goto out_unplug; } - spapr_add_lmbs(dev, addr, size, - spapr_ovec_test(ms->ov5_cas, OV5_HP_EVT), - &local_err); } else { - slot = object_property_get_uint(OBJECT(dimm), - PC_DIMM_SLOT_PROP, &local_err); - if (local_err) { + slot = object_property_get_uint(OBJECT(dimm), PC_DIMM_SLOT_PROP, errp); + if (!slot || !spapr_add_nvdimm(dev, slot, errp)) { goto out_unplug; } - spapr_add_nvdimm(dev, slot, &local_err); - } - - if (local_err) { - goto out_unplug; } return; out_unplug: pc_dimm_unplug(dimm, MACHINE(ms)); -out: - error_propagate(errp, local_err); } static void spapr_memory_pre_plug(HotplugHandler *hotplug_dev, DeviceState *dev, diff --git a/hw/ppc/spapr_nvdimm.c b/hw/ppc/spapr_nvdimm.c index b3a489e9fe18..361ac8c28e33 100644 --- a/hw/ppc/spapr_nvdimm.c +++ b/hw/ppc/spapr_nvdimm.c @@ -89,7 +89,7 @@ bool spapr_nvdimm_validate(HotplugHandler *hotplug_dev, NVDIMMDevice *nvdimm, } -void spapr_add_nvdimm(DeviceState *dev, uint64_t slot, Error **errp) +bool spapr_add_nvdimm(DeviceState *dev, uint64_t slot, Error **errp) { SpaprDrc *drc; bool hotplugged = spapr_drc_hotplugged(dev); @@ -98,12 +98,13 @@ void spapr_add_nvdimm(DeviceState *dev, uint64_t slot, Error **errp) g_assert(drc); if (!spapr_drc_attach(drc, dev, errp)) { - return; + return false; } if (hotplugged) { spapr_hotplug_req_add_by_index(drc); } + return true; } void spapr_create_nvdimm_dr_connectors(SpaprMachineState *spapr)