From nobody Tue Sep 9 21:30:25 2025 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E7FC2C6FD1C for ; Thu, 23 Mar 2023 05:32:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231164AbjCWFcr (ORCPT ); Thu, 23 Mar 2023 01:32:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59162 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230331AbjCWFcX (ORCPT ); Thu, 23 Mar 2023 01:32:23 -0400 Received: from mail-pl1-x62e.google.com (mail-pl1-x62e.google.com [IPv6:2607:f8b0:4864:20::62e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 246D82BF12 for ; Wed, 22 Mar 2023 22:31:21 -0700 (PDT) Received: by mail-pl1-x62e.google.com with SMTP id o11so21336423ple.1 for ; Wed, 22 Mar 2023 22:31:21 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance.com; s=google; t=1679549479; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=ihxW9QIYwW7geYYIsi25taexnQY98X1VOl5aytZk5u4=; b=kIURKCtRiCNlA/czcj4Vbbn/aPsD7HY6PBQRckQpSqqq6tcuS8WO695O85xiYDI7IN mj7F/qgUN6n/E4wc+SBODKr2dmT6S0Mxa6W6VLKt+s0eEF+lZkTQOyBVOT0F0s3DWh48 OAfvD8YdDYpxZ0m5mG39Suz/wYhEJcgo88I8+odM8Cr8qlmKUH63CnuPgiMCzWsVS5ap ghhRHepFPg99tHTLSyjPQHFnCFcjbbPBJ0V8+fd86fp4ep5JDV6PpOZV6G//DkAFLYAt lV3qsnaZk9q8KMlbZbmRM7g+gpjuhaG0dZ3CkhJLEkwk5CKYb8yc0jvlPmAVEMPhc9BP CmOg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1679549479; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=ihxW9QIYwW7geYYIsi25taexnQY98X1VOl5aytZk5u4=; b=MCQStOKVHhqb845bUs5DKMXQLdSeyV70EZGg/hYcgesVvwJ30mhlCIRLnt0vdWzBMU pKSVYClU1ZJqTq3GG+CN3DhJGNPodikKzzUy+WUwt1k1f/Ai3lS0zrmZ3+idzeVyZw4H vIXbBNnH5cVdRebsdOH4JX6Mf7ZjXnnOaUASKuvU0ECP8U7R3lIdQYSG9DGQYjNn4b/B MZ8IaCAcgVQvnl0dPWp9XZQC1oUeUe39QT+EYsJC9xX61DOofksncCVP1A7IEZeRv/uZ 8e7Uw3o0+Wli/5oskood/k4Vmx8Cym5lv1o8O4DSKv05eZzUVAq3qBGs5Z+Xh0eoP1Bf vLWA== X-Gm-Message-State: AO0yUKULMXD87+KTt/T6BM6EiXdJmYbGW9qkt8VT0Wkbfqwh2RRT5E18 Hx3aPa8RMaIj1wQfcS+TI29ATZSbFZMw5b+VGQ== X-Google-Smtp-Source: AK7set/rK1IzdrgpYvMrOwIGj0imNxvmORDT1PEdqXmLYJZSB+GB946artKH/vVbtgf7Sl8zcspYaQ== X-Received: by 2002:a05:6a20:ba87:b0:d9:949e:a72 with SMTP id fb7-20020a056a20ba8700b000d9949e0a72mr1560552pzb.60.1679549479099; Wed, 22 Mar 2023 22:31:19 -0700 (PDT) Received: from localhost ([139.177.225.255]) by smtp.gmail.com with ESMTPSA id p14-20020a62ab0e000000b0062505afff9fsm10953459pff.126.2023.03.22.22.31.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 22 Mar 2023 22:31:18 -0700 (PDT) From: Xie Yongji To: mst@redhat.com, jasowang@redhat.com, tglx@linutronix.de, hch@lst.de Cc: virtualization@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 02/11] vdpa: Add set/get_vq_affinity callbacks in vdpa_config_ops Date: Thu, 23 Mar 2023 13:30:34 +0800 Message-Id: <20230323053043.35-3-xieyongji@bytedance.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20230323053043.35-1-xieyongji@bytedance.com> References: <20230323053043.35-1-xieyongji@bytedance.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" This introduces set/get_vq_affinity callbacks in vdpa_config_ops to support virtqueue affinity management for vdpa device drivers. Signed-off-by: Xie Yongji Acked-by: Jason Wang --- drivers/virtio/virtio_vdpa.c | 28 ++++++++++++++++++++++++++++ include/linux/vdpa.h | 13 +++++++++++++ 2 files changed, 41 insertions(+) diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c index d7f5af62ddaa..f72696b4c1c2 100644 --- a/drivers/virtio/virtio_vdpa.c +++ b/drivers/virtio/virtio_vdpa.c @@ -337,6 +337,32 @@ static const char *virtio_vdpa_bus_name(struct virtio_= device *vdev) return dev_name(&vdpa->dev); } =20 +static int virtio_vdpa_set_vq_affinity(struct virtqueue *vq, + const struct cpumask *cpu_mask) +{ + struct virtio_vdpa_device *vd_dev =3D to_virtio_vdpa_device(vq->vdev); + struct vdpa_device *vdpa =3D vd_dev->vdpa; + const struct vdpa_config_ops *ops =3D vdpa->config; + unsigned int index =3D vq->index; + + if (ops->set_vq_affinity) + return ops->set_vq_affinity(vdpa, index, cpu_mask); + + return 0; +} + +static const struct cpumask * +virtio_vdpa_get_vq_affinity(struct virtio_device *vdev, int index) +{ + struct vdpa_device *vdpa =3D vd_get_vdpa(vdev); + const struct vdpa_config_ops *ops =3D vdpa->config; + + if (ops->get_vq_affinity) + return ops->get_vq_affinity(vdpa, index); + + return NULL; +} + static const struct virtio_config_ops virtio_vdpa_config_ops =3D { .get =3D virtio_vdpa_get, .set =3D virtio_vdpa_set, @@ -349,6 +375,8 @@ static const struct virtio_config_ops virtio_vdpa_confi= g_ops =3D { .get_features =3D virtio_vdpa_get_features, .finalize_features =3D virtio_vdpa_finalize_features, .bus_name =3D virtio_vdpa_bus_name, + .set_vq_affinity =3D virtio_vdpa_set_vq_affinity, + .get_vq_affinity =3D virtio_vdpa_get_vq_affinity, }; =20 static void virtio_vdpa_release_dev(struct device *_d) diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 43f59ef10cc9..e52c9a37999c 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -250,6 +250,15 @@ struct vdpa_map_file { * @vdev: vdpa device * Returns the iova range supported by * the device. + * @set_vq_affinity: Set the affinity of virtqueue (optional) + * @vdev: vdpa device + * @idx: virtqueue index + * @cpu_mask: the affinity mask + * Returns integer: success (0) or error (< 0) + * @get_vq_affinity: Get the affinity of virtqueue (optional) + * @vdev: vdpa device + * @idx: virtqueue index + * Returns the affinity mask * @set_group_asid: Set address space identifier for a * virtqueue group (optional) * @vdev: vdpa device @@ -340,6 +349,10 @@ struct vdpa_config_ops { const void *buf, unsigned int len); u32 (*get_generation)(struct vdpa_device *vdev); struct vdpa_iova_range (*get_iova_range)(struct vdpa_device *vdev); + int (*set_vq_affinity)(struct vdpa_device *vdev, u16 idx, + const struct cpumask *cpu_mask); + const struct cpumask *(*get_vq_affinity)(struct vdpa_device *vdev, + u16 idx); =20 /* DMA ops */ int (*set_map)(struct vdpa_device *vdev, unsigned int asid, --=20 2.20.1