From patchwork Thu Oct 6 16:07:25 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Auger X-Patchwork-Id: 9365077 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 DAF5D6075E for ; Thu, 6 Oct 2016 16:16:36 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CC2A129120 for ; Thu, 6 Oct 2016 16:16:36 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C071C29178; Thu, 6 Oct 2016 16:16:36 +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 4DDC829120 for ; Thu, 6 Oct 2016 16:16:35 +0000 (UTC) Received: from localhost ([::1]:57697 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bsBLW-0007x1-So for patchwork-qemu-devel@patchwork.kernel.org; Thu, 06 Oct 2016 12:16:34 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51458) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bsBDA-0000JY-Pn for qemu-devel@nongnu.org; Thu, 06 Oct 2016 12:07:57 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bsBD9-00077E-Az for qemu-devel@nongnu.org; Thu, 06 Oct 2016 12:07:56 -0400 Received: from mx1.redhat.com ([209.132.183.28]:55502) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bsBD9-00076V-50 for qemu-devel@nongnu.org; Thu, 06 Oct 2016 12:07:55 -0400 Received: from int-mx14.intmail.prod.int.phx2.redhat.com (int-mx14.intmail.prod.int.phx2.redhat.com [10.5.11.27]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id AD10BA4A15; Thu, 6 Oct 2016 16:07:54 +0000 (UTC) Received: from localhost.redhat.com (vpn1-4-62.ams2.redhat.com [10.36.4.62]) by int-mx14.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u96G7iwT018457; Thu, 6 Oct 2016 12:07:53 -0400 From: Eric Auger To: eric.auger@redhat.com, eric.auger.pro@gmail.com, qemu-devel@nongnu.org, alex.williamson@redhat.com, armbru@redhat.com Date: Thu, 6 Oct 2016 16:07:25 +0000 Message-Id: <1475770058-20409-5-git-send-email-eric.auger@redhat.com> In-Reply-To: <1475770058-20409-1-git-send-email-eric.auger@redhat.com> References: <1475770058-20409-1-git-send-email-eric.auger@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.27 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.25]); Thu, 06 Oct 2016 16:07:54 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PATCH v5 04/17] vfio/pci: Pass an error object to vfio_msix_early_setup 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: 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 Pass an error object to prepare for migration to VFIO-PCI realize. The returned value will be removed later on. We now format an error in case of reading failure for - the MSIX flags - the MSIX table, - the MSIX PBA. Signed-off-by: Eric Auger Reviewed-by: Markus Armbruster --- v4 -> v5: - test ret instead of err to avoid subsequent revert v1 -> v2: - this patch now comes before the actual realize migration - mention in the commit message we are no more silent on above errors --- hw/vfio/pci.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 46e3cb8..02e92b0 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -1277,7 +1277,7 @@ static void vfio_pci_fixup_msix_region(VFIOPCIDevice *vdev) * need to first look for where the MSI-X table lives. So we * unfortunately split MSI-X setup across two functions. */ -static int vfio_msix_early_setup(VFIOPCIDevice *vdev) +static int vfio_msix_early_setup(VFIOPCIDevice *vdev, Error **errp) { uint8_t pos; uint16_t ctrl; @@ -1292,16 +1292,19 @@ static int vfio_msix_early_setup(VFIOPCIDevice *vdev) if (pread(fd, &ctrl, sizeof(ctrl), vdev->config_offset + pos + PCI_MSIX_FLAGS) != sizeof(ctrl)) { + error_setg_errno(errp, errno, "failed to read PCI MSIX FLAGS"); return -errno; } if (pread(fd, &table, sizeof(table), vdev->config_offset + pos + PCI_MSIX_TABLE) != sizeof(table)) { + error_setg_errno(errp, errno, "failed to read PCI MSIX TABLE"); return -errno; } if (pread(fd, &pba, sizeof(pba), vdev->config_offset + pos + PCI_MSIX_PBA) != sizeof(pba)) { + error_setg_errno(errp, errno, "failed to read PCI MSIX PBA"); return -errno; } @@ -1332,8 +1335,8 @@ static int vfio_msix_early_setup(VFIOPCIDevice *vdev) (vdev->device_id & 0xff00) == 0x5800) { msix->pba_offset = 0x1000; } else { - error_report("vfio: Hardware reports invalid configuration, " - "MSIX PBA outside of specified BAR"); + error_setg(errp, "hardware reports invalid configuration, " + "MSIX PBA outside of specified BAR"); g_free(msix); return -EINVAL; } @@ -2657,9 +2660,9 @@ static int vfio_initfn(PCIDevice *pdev) vfio_pci_size_rom(vdev); - ret = vfio_msix_early_setup(vdev); + ret = vfio_msix_early_setup(vdev, &err); if (ret) { - return ret; + goto error; } vfio_bars_setup(vdev);