From patchwork Fri Oct 13 08:09:41 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Hawkins Jiawei X-Patchwork-Id: 1848031 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20230601 header.b=ZKi8gfiF; dkim-atps=neutral Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org (client-ip=209.51.188.17; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=patchwork.ozlabs.org) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4S6KDb2cfDz1yqj for ; Fri, 13 Oct 2023 19:19:43 +1100 (AEDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qrDFl-0000H8-Br; Fri, 13 Oct 2023 04:10:37 -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 1qrDFb-00007B-Fu for qemu-devel@nongnu.org; Fri, 13 Oct 2023 04:10:30 -0400 Received: from mail-pf1-x429.google.com ([2607:f8b0:4864:20::429]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1qrDFZ-0001rE-A1 for qemu-devel@nongnu.org; Fri, 13 Oct 2023 04:10:27 -0400 Received: by mail-pf1-x429.google.com with SMTP id d2e1a72fcca58-690f7d73a3aso1657916b3a.0 for ; Fri, 13 Oct 2023 01:10:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1697184623; x=1697789423; darn=nongnu.org; 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=tI+lfuziwEyYFXJ3qwkvyQxuBIsy3m5tpBIVpjJo/cg=; b=ZKi8gfiFhbwZExOCDsN8srxrcoT4J4VrUXkVzF5smkjNGR8Vzkwt+Bflx3Irsyh+wY RiiPRS4WhDRZeKqP/LvjZdWqA41Yn9kTCSKy3J7+BVG2eOjszocse/4k0IAsDXEBpaDk dICuqsnmx4SD9c3MiwkRoCGO7dRycebcZnzVlMB09qxbsoDqiNrAWLqrKnxbbTznNY/2 hr1Yi5jH3igLF3eEnaD2BP9dlkf4tLbK71eJ3UrXtYgLvhTqb/tNL41At9nMjby0s+rE lNbgvTNxw30nldXdbhv3got4yEgg+hS2GOaAlIvWJtg6q4t/L1j8L1wDBik+XwYbmAMu 2/jg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1697184623; x=1697789423; 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=tI+lfuziwEyYFXJ3qwkvyQxuBIsy3m5tpBIVpjJo/cg=; b=hY6EcltXJ8bpudqlwi+O6BciYq7pBfKLMrJfZx8EJldfGapEAT1q+UkBE/gIWFFSpo JXEAlD2rZPmwpeB9WrfgRjKCbZtUaHwerfQiqp4m5y4oEl5eNzppGyPh72Gepni+wtP4 FdWMEdvV9HHpS4Xf2sAN56saDS/xDlJBeR7xhGinXHfdr3uegh4c6tMaRjpgxn+LTKuI CyAviJz2WoNGG2NESPZLzXBZhSVxVauPd/s9l3NEYDseW+1HwTkPNYGwltQF72ftqsuH 7Xj/kAZNVRsNXfW9VqqHvczgNa6NcNaMJQAYjBRb/tSadh6pPu7N+qH6IkAeY59NBWlj ASYA== X-Gm-Message-State: AOJu0YxNk14RRFZUK3TK5GeKDWnzcEKuiedLF78OdrJAvRxouTKiO31H dRsnrnnyn18O6aRB1i9TDs8= X-Google-Smtp-Source: AGHT+IG0nBr72JaEbCJmWX+Yorqog/m5Nc6Fh6Mv3+ggkSQ0pxrB0y3GFSSrG/TsyDxOsOC9TxGjxw== X-Received: by 2002:a05:6a00:1912:b0:690:d2b0:1b37 with SMTP id y18-20020a056a00191200b00690d2b01b37mr33179132pfi.10.1697184622786; Fri, 13 Oct 2023 01:10:22 -0700 (PDT) Received: from localhost ([183.242.254.166]) by smtp.gmail.com with ESMTPSA id k64-20020a632443000000b0057c44503835sm640219pgk.65.2023.10.13.01.10.21 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Oct 2023 01:10:22 -0700 (PDT) From: Hawkins Jiawei To: jasowang@redhat.com, mst@redhat.com, eperezma@redhat.com Cc: qemu-devel@nongnu.org, yin31149@gmail.com, 18801353760@163.com Subject: [PATCH v5 6/7] vhost: Expose vhost_svq_available_slots() Date: Fri, 13 Oct 2023 16:09:41 +0800 Message-Id: <25938079f0bd8185fd664c64e205e629f7a966be.1697165821.git.yin31149@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: References: MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::429; envelope-from=yin31149@gmail.com; helo=mail-pf1-x429.google.com X-Spam_score_int: -17 X-Spam_score: -1.8 X-Spam_bar: - X-Spam_report: (-1.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_ENVFROM_END_DIGIT=0.25, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, 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+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Next patches in this series will delay the polling and checking of buffers until either the SVQ is full or control commands shadow buffers are full, no longer perform an immediate poll and check of the device's used buffers for each CVQ state load command. To achieve this, this patch exposes vhost_svq_available_slots(), allowing QEMU to know whether the SVQ is full. Signed-off-by: Hawkins Jiawei Acked-by: Eugenio Pérez --- v5: - inline the vhost_svq_available_slots() in the caller and remove the helper function from this patch suggested by Eugenio v4: https://lore.kernel.org/all/13b3a36cc33c443a47525957ea38e80594d90595.1693287885.git.yin31149@gmail.com/ hw/virtio/vhost-shadow-virtqueue.c | 2 +- hw/virtio/vhost-shadow-virtqueue.h | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/hw/virtio/vhost-shadow-virtqueue.c b/hw/virtio/vhost-shadow-virtqueue.c index e731b1d2ea..fc5f408f77 100644 --- a/hw/virtio/vhost-shadow-virtqueue.c +++ b/hw/virtio/vhost-shadow-virtqueue.c @@ -66,7 +66,7 @@ bool vhost_svq_valid_features(uint64_t features, Error **errp) * * @svq: The svq */ -static uint16_t vhost_svq_available_slots(const VhostShadowVirtqueue *svq) +uint16_t vhost_svq_available_slots(const VhostShadowVirtqueue *svq) { return svq->num_free; } diff --git a/hw/virtio/vhost-shadow-virtqueue.h b/hw/virtio/vhost-shadow-virtqueue.h index 5bce67837b..19c842a15b 100644 --- a/hw/virtio/vhost-shadow-virtqueue.h +++ b/hw/virtio/vhost-shadow-virtqueue.h @@ -114,6 +114,7 @@ typedef struct VhostShadowVirtqueue { bool vhost_svq_valid_features(uint64_t features, Error **errp); +uint16_t vhost_svq_available_slots(const VhostShadowVirtqueue *svq); void vhost_svq_push_elem(VhostShadowVirtqueue *svq, const VirtQueueElement *elem, uint32_t len); int vhost_svq_add(VhostShadowVirtqueue *svq, const struct iovec *out_sg,