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dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:59572 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kX98m-0007Ju-5v for qemu-devel@archiver.kernel.org; Mon, 26 Oct 2020 16:30:52 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:44672) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kX96y-000626-O7 for qemu-devel@nongnu.org; Mon, 26 Oct 2020 16:29:01 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:34092) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kX96w-0000oj-Av for qemu-devel@nongnu.org; Mon, 26 Oct 2020 16:29:00 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1603744137; 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=7lTtRR+EK0WRsqj3isYFad8GxJkpbERjvkA92HDAi8k=; b=Ov3SDE+Tt1PGXDFx/yHatf9tGqRtL9wdv38x6/krS448SkGq634QdvA7K9szBUI/nlqKG0 NhBTCyXLg2KLLOVE/72GeQkK/lSboYw2YkB1s6RQtjufViGL4WWbJYW/wzhYYUjW6szq8b YTuq+WGq3P/f07CLC0kvDPmCoHqsIlI= 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-9-GXXmRFTEPti-kZdUb4tGFg-1; Mon, 26 Oct 2020 16:28:55 -0400 X-MC-Unique: GXXmRFTEPti-kZdUb4tGFg-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 ED3731087D61; Mon, 26 Oct 2020 20:28:53 +0000 (UTC) Received: from [10.36.112.194] (ovpn-112-194.ams2.redhat.com [10.36.112.194]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 9DAB910013D9; Mon, 26 Oct 2020 20:28:42 +0000 (UTC) Subject: Re: [PATCH v2 17/19] util/vfio-helpers: Introduce qemu_vfio_pci_msix_set_irq() To: =?UTF-8?Q?Philippe_Mathieu-Daud=c3=a9?= , qemu-devel@nongnu.org References: <20201026105504.4023620-1-philmd@redhat.com> <20201026105504.4023620-18-philmd@redhat.com> From: Auger Eric Message-ID: Date: Mon, 26 Oct 2020 21:28:41 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.5.0 MIME-Version: 1.0 In-Reply-To: <20201026105504.4023620-18-philmd@redhat.com> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=eric.auger@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 8bit Received-SPF: pass client-ip=216.205.24.124; envelope-from=eric.auger@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/26 02:39:09 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -42 X-Spam_score: -4.3 X-Spam_bar: ---- X-Spam_report: (-4.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, NICE_REPLY_A=-2.167, 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=unavailable 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: Fam Zheng , Kevin Wolf , qemu-block@nongnu.org, Max Reitz , Alex Williamson , Stefan Hajnoczi Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi Philippe, On 10/26/20 11:55 AM, Philippe Mathieu-Daudé wrote: > Introduce qemu_vfio_pci_msix_set_irq() to set the event > notifier of a specific MSIX IRQ. All other registered IRQs > are left unmodified. > > Reviewed-by: Stefan Hajnoczi > Signed-off-by: Philippe Mathieu-Daudé Reviewed-by: Eric Auger Thanks Eric > --- > include/qemu/vfio-helpers.h | 2 ++ > util/vfio-helpers.c | 35 +++++++++++++++++++++++++++++++++++ > util/trace-events | 1 + > 3 files changed, 38 insertions(+) > > diff --git a/include/qemu/vfio-helpers.h b/include/qemu/vfio-helpers.h > index 492072cba2f..4c06694e03a 100644 > --- a/include/qemu/vfio-helpers.h > +++ b/include/qemu/vfio-helpers.h > @@ -33,5 +33,7 @@ int qemu_vfio_pci_init_irq(QEMUVFIOState *s, EventNotifier *e, > int irq_type, Error **errp); > int qemu_vfio_pci_msix_init_irqs(QEMUVFIOState *s, > unsigned *irq_count, Error **errp); > +int qemu_vfio_pci_msix_set_irq(QEMUVFIOState *s, unsigned irq_index, > + EventNotifier *notifier, Error **errp); > > #endif > diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c > index d88e2c7dc1f..18142e6be86 100644 > --- a/util/vfio-helpers.c > +++ b/util/vfio-helpers.c > @@ -232,6 +232,41 @@ int qemu_vfio_pci_init_irq(QEMUVFIOState *s, EventNotifier *e, > return 0; > } > > +/** > + * Initialize a MSIX IRQ and register its event notifier. > + * @irq_index: MSIX IRQ index > + * @notifier: notifier for the MSIX IRQ > + */ > +int qemu_vfio_pci_msix_set_irq(QEMUVFIOState *s, unsigned irq_index, > + EventNotifier *notifier, Error **errp) > +{ > + int r; > + int fd = event_notifier_get_fd(notifier); > + size_t irq_set_size; > + struct vfio_irq_set *irq_set; > + > + trace_qemu_vfio_pci_msix_set_irq(irq_index, fd); > + irq_set_size = sizeof(*irq_set) + sizeof(int32_t); > + irq_set = g_malloc0(irq_set_size); > + /* Get to a known IRQ state */ > + *irq_set = (struct vfio_irq_set) { > + .argsz = irq_set_size, > + .flags = VFIO_IRQ_SET_DATA_EVENTFD | VFIO_IRQ_SET_ACTION_TRIGGER, > + .index = VFIO_PCI_MSIX_IRQ_INDEX, > + .start = irq_index, > + .count = 1, > + }; > + ((int32_t *)&irq_set->data)[0] = fd; > + r = ioctl(s->device, VFIO_DEVICE_SET_IRQS, irq_set); > + g_free(irq_set); > + if (r) { > + error_setg_errno(errp, errno, "Failed to setup device interrupt #%u", > + irq_index); > + return -errno; > + } > + return 0; > +} > + > /** > * Initialize device MSIX IRQs and register event notifiers. > * @irq_count: pointer to number of MSIX IRQs to initialize > diff --git a/util/trace-events b/util/trace-events > index ec93578b125..3a56c542a94 100644 > --- a/util/trace-events > +++ b/util/trace-events > @@ -88,6 +88,7 @@ qemu_vfio_dma_map(void *s, void *host, size_t size, bool temporary, uint64_t *io > qemu_vfio_dma_mapped(void *s, void *host, uint64_t iova, size_t size) "s %p host %p <-> iova 0x%"PRIx64" size 0x%zx" > qemu_vfio_dma_unmap(void *s, void *host) "s %p host %p" > qemu_vfio_msix_info_irqs(uint32_t count, unsigned asked) "msix irqs %"PRIu32" (asked: %u)" > +qemu_vfio_pci_msix_set_irq(unsigned irq_index, int fd) "msix irq %u notifier_fd %d" > qemu_vfio_iommu_iova_pgsizes(uint64_t iova_pgsizes) "iommu page size bitmask: 0x%08"PRIx64 > qemu_vfio_pci_read_config(void *buf, int ofs, int size, uint64_t region_ofs, uint64_t region_size) "read cfg ptr %p ofs 0x%x size %d (region ofs 0x%"PRIx64" size %"PRId64")" > qemu_vfio_pci_write_config(void *buf, int ofs, int size, uint64_t region_ofs, uint64_t region_size) "write cfg ptr %p ofs 0x%x size %d (region ofs 0x%"PRIx64" size %"PRId64")" >