From nobody Thu Sep 18 17:15:48 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 D03DDC4332F for ; Mon, 5 Dec 2022 08:43:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232236AbiLEInz (ORCPT ); Mon, 5 Dec 2022 03:43:55 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36030 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231753AbiLEIno (ORCPT ); Mon, 5 Dec 2022 03:43:44 -0500 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id DAE7BF6D for ; Mon, 5 Dec 2022 00:43:43 -0800 (PST) Received: by mail-pl1-x633.google.com with SMTP id jl24so10153412plb.8 for ; Mon, 05 Dec 2022 00:43:43 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bytedance-com.20210112.gappssmtp.com; s=20210112; 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=cO+KU63uNOWhYuRIkuFEXhxzLMtKvTfecVGe+9pJx48=; b=DhvH+PirhSMpFBT0JD9NNMmsymRnTivAVV2txwqvLAmz2gZL/tiC09x3ysYplVGVOr rLr3wHTZr0W1MUAL/AegwzZ5IlETMRfuV0hrxpx0sP6rP+s5uOovAtJSDNF/cBLfjR3D k1lqXE1PeD0Pa6oMjZNUyNwMxF4xnJEFazUNyF++JBJabk1UeQc6D/AWxqpcxTWzBkNG 07VLm2boc8fgX9OBw9QbFTAko0AnFCqUi4x07j3nIhWvwit8y5AG45Uar+IlTEzKLCtR 2fqFmUk6M0OtrWZLw4fZuiZx2SnskerlOnQiLdZEeTU4FB8m6gXGti/S6LQeeu5nNdR1 54dg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=cO+KU63uNOWhYuRIkuFEXhxzLMtKvTfecVGe+9pJx48=; b=D15HZuRRhDygMmjdQzXBAyJewfHwJIjVkKlHGbX2yo2CaOQanAeRkXNCu+K98IkHiu 3GT2zEbZIO+mzN/HdFIesJ8EYjI7piy8zjcjPgXGWNSBmiesqT2MMA4DgNu5E9ZRqHxv 7vz5SV/x3reALf5Cpjsk74YVMuspnoOskUSxz+SMYj6a5Zimpl2sVPTFXSOawmU6FIPf mq4UJnA/AG5Db44tzVhHwQqjb3qI0DSKqWnvgGHkiHHUdIwqjp4IXb24rEd53V6842y1 tLOHKtE+BHWjx7ZuX6DKIrPagz+60M/BuxrEH0nn4S+CY3odD7AEe4U2fqzRYyAdZA0U l+Jg== X-Gm-Message-State: ANoB5ploLnkbUsFBS3/OePDpAOPep4aFxfDmhdmRDPNuG3r/TL9F0sN4 dgx7e5WqWjYicS3kXjzGuaBw X-Google-Smtp-Source: AA0mqf7u05sKp5pD6WT353+KEy/rhM2wKKmfYNlvyz/rWZoDChWw8jJnNBx0cfF8d10/6/F7skJwJg== X-Received: by 2002:a17:90b:2503:b0:219:baef:3d0 with SMTP id ns3-20020a17090b250300b00219baef03d0mr7903735pjb.95.1670229823405; Mon, 05 Dec 2022 00:43:43 -0800 (PST) Received: from localhost ([101.229.232.206]) by smtp.gmail.com with ESMTPSA id n6-20020a170902d2c600b0017c19d7c89bsm10005499plc.269.2022.12.05.00.43.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 05 Dec 2022 00:43:43 -0800 (PST) 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 v2 03/11] vdpa: Add set_irq_affinity callback in vdpa_config_ops Date: Mon, 5 Dec 2022 16:41:19 +0800 Message-Id: <20221205084127.535-4-xieyongji@bytedance.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20221205084127.535-1-xieyongji@bytedance.com> References: <20221205084127.535-1-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_irq_affinity callback in vdpa_config_ops so that vdpa device driver can get the interrupt affinity hint from the virtio device driver. The interrupt affinity hint would be needed by the interrupt affinity spreading mechanism. Signed-off-by: Xie Yongji --- drivers/virtio/virtio_vdpa.c | 4 ++++ include/linux/vdpa.h | 8 ++++++++ 2 files changed, 12 insertions(+) diff --git a/drivers/virtio/virtio_vdpa.c b/drivers/virtio/virtio_vdpa.c index 08084b49e5a1..4731e4616ee0 100644 --- a/drivers/virtio/virtio_vdpa.c +++ b/drivers/virtio/virtio_vdpa.c @@ -275,9 +275,13 @@ static int virtio_vdpa_find_vqs(struct virtio_device *= vdev, unsigned int nvqs, struct virtio_vdpa_device *vd_dev =3D to_virtio_vdpa_device(vdev); struct vdpa_device *vdpa =3D vd_get_vdpa(vdev); const struct vdpa_config_ops *ops =3D vdpa->config; + struct irq_affinity default_affd =3D { 0 }; struct vdpa_callback cb; int i, err, queue_idx =3D 0; =20 + if (ops->set_irq_affinity) + ops->set_irq_affinity(vdpa, desc ? desc : &default_affd); + for (i =3D 0; i < nvqs; ++i) { if (!names[i]) { vqs[i] =3D NULL; diff --git a/include/linux/vdpa.h b/include/linux/vdpa.h index 0ff6c9363356..482ff7d0206f 100644 --- a/include/linux/vdpa.h +++ b/include/linux/vdpa.h @@ -256,6 +256,12 @@ struct vdpa_map_file { * @vdev: vdpa device * @idx: virtqueue index * Returns the irq affinity mask + * @set_irq_affinity: Pass the irq affinity hint from the virtio + * device driver to vdpa driver (optional). + * Needed by the interrupt affinity spreading + * mechanism. + * @vdev: vdpa device + * @desc: irq affinity hint * @set_group_asid: Set address space identifier for a * virtqueue group (optional) * @vdev: vdpa device @@ -344,6 +350,8 @@ struct vdpa_config_ops { const struct cpumask *cpu_mask); const struct cpumask *(*get_vq_affinity)(struct vdpa_device *vdev, u16 idx); + void (*set_irq_affinity)(struct vdpa_device *vdev, + struct irq_affinity *desc); =20 /* DMA ops */ int (*set_map)(struct vdpa_device *vdev, unsigned int asid, --=20 2.20.1