From patchwork Tue May 14 15:31:22 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 13664253 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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 12C30C04FFE for ; Tue, 14 May 2024 15:34:16 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s6u8A-0001I5-Ss; Tue, 14 May 2024 11:31:55 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s6u7z-0001CY-Mx for qemu-devel@nongnu.org; Tue, 14 May 2024 11:31:43 -0400 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1s6u7x-0000Vw-Op for qemu-devel@nongnu.org; Tue, 14 May 2024 11:31:43 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1715700700; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=saACD+bKt08Zn3rOT2iSL9usk+oPqoqtWSgLCYRdEDE=; b=RoDwhUmyl35BTgItxicbQZwLj3G5ptXKCWg11CBIiAMH14RgnmuU2KzLlpqmB/MV3YeyD3 JFdCzeHa/7T65dRnr13OD04cXU9MIHBaGgTAdcfC+BzCUIOTu0ZckypLvRjeuK5oOYca19 UVkbbf0KuZx9zQD2hfwok52G8tVNDEk= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-248-xB27HLVoNdmKo9VzjdPrMQ-1; Tue, 14 May 2024 11:31:37 -0400 X-MC-Unique: xB27HLVoNdmKo9VzjdPrMQ-1 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.rdu2.redhat.com [10.11.54.6]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id BBD828E7802; Tue, 14 May 2024 15:31:35 +0000 (UTC) Received: from corto.redhat.com (unknown [10.39.192.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id E57EA200BFC7; Tue, 14 May 2024 15:31:33 +0000 (UTC) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-devel@nongnu.org Cc: Peter Xu , Fabiano Rosas , Alex Williamson , Avihai Horon , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , Markus Armbruster , =?utf-8?q?C=C3=A9dric_Le_Goater?= Subject: [PATCH v6 1/9] vfio: Add Error** argument to .set_dirty_page_tracking() handler Date: Tue, 14 May 2024 17:31:22 +0200 Message-ID: <20240514153130.394307-2-clg@redhat.com> In-Reply-To: <20240514153130.394307-1-clg@redhat.com> References: <20240514153130.394307-1-clg@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.11.54.6 Received-SPF: pass client-ip=170.10.133.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -30 X-Spam_score: -3.1 X-Spam_bar: --- X-Spam_report: (-3.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.974, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org We will use the Error object to improve error reporting in the .log_global*() handlers of VFIO. Add documentation while at it. Reviewed-by: Philippe Mathieu-Daudé Reviewed-by: Avihai Horon Signed-off-by: Cédric Le Goater Reviewed-by: Eric Auger --- Changes in v5: - Fixed typo in set_dirty_page_tracking documentation include/hw/vfio/vfio-container-base.h | 18 ++++++++++++++++-- hw/vfio/common.c | 4 ++-- hw/vfio/container-base.c | 4 ++-- hw/vfio/container.c | 6 +++--- 4 files changed, 23 insertions(+), 9 deletions(-) diff --git a/include/hw/vfio/vfio-container-base.h b/include/hw/vfio/vfio-container-base.h index 3582d5f97a37877b2adfc0d0b06996c82403f8b7..326ceea52a2030eec9dad289a9845866c4a8c090 100644 --- a/include/hw/vfio/vfio-container-base.h +++ b/include/hw/vfio/vfio-container-base.h @@ -82,7 +82,7 @@ int vfio_container_add_section_window(VFIOContainerBase *bcontainer, void vfio_container_del_section_window(VFIOContainerBase *bcontainer, MemoryRegionSection *section); int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer, - bool start); + bool start, Error **errp); int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer, VFIOBitmap *vbmap, hwaddr iova, hwaddr size); @@ -121,9 +121,23 @@ struct VFIOIOMMUClass { int (*attach_device)(const char *name, VFIODevice *vbasedev, AddressSpace *as, Error **errp); void (*detach_device)(VFIODevice *vbasedev); + /* migration feature */ + + /** + * @set_dirty_page_tracking + * + * Start or stop dirty pages tracking on VFIO container + * + * @bcontainer: #VFIOContainerBase on which to de/activate dirty + * page tracking + * @start: indicates whether to start or stop dirty pages tracking + * @errp: pointer to Error*, to store an error if it happens. + * + * Returns zero to indicate success and negative for error + */ int (*set_dirty_page_tracking)(const VFIOContainerBase *bcontainer, - bool start); + bool start, Error **errp); int (*query_dirty_bitmap)(const VFIOContainerBase *bcontainer, VFIOBitmap *vbmap, hwaddr iova, hwaddr size); diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 8f9cbdc0264044ce587877a7d19d14b28527291b..485e53916491f1164d29e739fb7106c0c77df737 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -1076,7 +1076,7 @@ static bool vfio_listener_log_global_start(MemoryListener *listener, if (vfio_devices_all_device_dirty_tracking(bcontainer)) { ret = vfio_devices_dma_logging_start(bcontainer); } else { - ret = vfio_container_set_dirty_page_tracking(bcontainer, true); + ret = vfio_container_set_dirty_page_tracking(bcontainer, true, NULL); } if (ret) { @@ -1096,7 +1096,7 @@ static void vfio_listener_log_global_stop(MemoryListener *listener) if (vfio_devices_all_device_dirty_tracking(bcontainer)) { vfio_devices_dma_logging_stop(bcontainer); } else { - ret = vfio_container_set_dirty_page_tracking(bcontainer, false); + ret = vfio_container_set_dirty_page_tracking(bcontainer, false, NULL); } if (ret) { diff --git a/hw/vfio/container-base.c b/hw/vfio/container-base.c index 913ae49077c4f09b7b27517c1231cfbe4befb7fb..7c0764121d24b02b6c4e66e368d7dff78a6d65aa 100644 --- a/hw/vfio/container-base.c +++ b/hw/vfio/container-base.c @@ -53,14 +53,14 @@ void vfio_container_del_section_window(VFIOContainerBase *bcontainer, } int vfio_container_set_dirty_page_tracking(VFIOContainerBase *bcontainer, - bool start) + bool start, Error **errp) { if (!bcontainer->dirty_pages_supported) { return 0; } g_assert(bcontainer->ops->set_dirty_page_tracking); - return bcontainer->ops->set_dirty_page_tracking(bcontainer, start); + return bcontainer->ops->set_dirty_page_tracking(bcontainer, start, errp); } int vfio_container_query_dirty_bitmap(const VFIOContainerBase *bcontainer, diff --git a/hw/vfio/container.c b/hw/vfio/container.c index 77bdec276ec49cb9cd767c0de42ec801b4421572..c35221fbe7dc5453050f97cd186fc958e24f28f7 100644 --- a/hw/vfio/container.c +++ b/hw/vfio/container.c @@ -209,7 +209,7 @@ static int vfio_legacy_dma_map(const VFIOContainerBase *bcontainer, hwaddr iova, static int vfio_legacy_set_dirty_page_tracking(const VFIOContainerBase *bcontainer, - bool start) + bool start, Error **errp) { const VFIOContainer *container = container_of(bcontainer, VFIOContainer, bcontainer); @@ -227,8 +227,8 @@ vfio_legacy_set_dirty_page_tracking(const VFIOContainerBase *bcontainer, ret = ioctl(container->fd, VFIO_IOMMU_DIRTY_PAGES, &dirty); if (ret) { ret = -errno; - error_report("Failed to set dirty tracking flag 0x%x errno: %d", - dirty.flags, errno); + error_setg_errno(errp, errno, "Failed to set dirty tracking flag 0x%x", + dirty.flags); } return ret;