From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6521220E00B for ; Mon, 16 Jun 2025 08:25:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=170.10.129.124 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750062334; cv=none; b=CwJvbqm/bJBP8w3iAn8azCHjxX9TAUWASAdGa0iTMMNceyLPUdlVVUt4HvLZ2UJE9Ws/zpn3aoPi6k186WnuyISsCrcgQys21hVLE1QNav1B8xC57LdEJnKDci8bQ3iAjc189O3iS/XlneHUT8AHa3I7RUuTJJjjLt58WoYyXww= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1750062334; c=relaxed/simple; bh=yk59vr5RLB1RScFT2EiC7kkHJEyAXkx7Rk6wmGXmEAg=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=ATPAAByK7KNOfXAY6xSAzXSkI0HV/KZiRUJwbpVA+BS93Z3bWvU/qen8lOTQADNP8nXJfSrMJamID+73kXwZltQs2Jwunjf+xgCvHBexyAPqkmhW2cQJf/jieJT8QQqlY24aDpck6ga13c/3NQ5ZGXB5SRdLWqUHnPIxiF1kwOA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com; spf=pass smtp.mailfrom=redhat.com; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b=UyWty9EX; arc=none smtp.client-ip=170.10.129.124 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=redhat.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=redhat.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="UyWty9EX" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1750062331; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=ARUl9HRdCC74hdwvbgCBDHJ3gsOkqhi27NOZxm0AX2w=; b=UyWty9EXzKqir9siyALLM8xcfnI66jH05YeIevbJ9zmZLz3aS4B3vBi3aSnnLM25n03GuC QLLUUzfac1lDN++LAHC3d7HnjtMRUJmem6hTJqXvSFF6vguh5ZMKJqibm5mh/oPVbkaH7H 0rJqSNP0ISoT0BDZkF0HZjKsOtnQUZM= Received: from mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (ec2-35-165-154-97.us-west-2.compute.amazonaws.com [35.165.154.97]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-553-Mmt7RFPgOpmg2MUuJNTHMg-1; Mon, 16 Jun 2025 04:25:26 -0400 X-MC-Unique: Mmt7RFPgOpmg2MUuJNTHMg-1 X-Mimecast-MFC-AGG-ID: Mmt7RFPgOpmg2MUuJNTHMg_1750062325 Received: from mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.111]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 9174B18002A1; Mon, 16 Jun 2025 08:25:25 +0000 (UTC) Received: from localhost.localdomain (unknown [10.72.112.72]) by mx-prod-int-08.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTP id 09623180045B; Mon, 16 Jun 2025 08:25:21 +0000 (UTC) From: Jason Wang To: mst@redhat.com, jasowang@redhat.com Cc: xuanzhuo@linux.alibaba.com, eperezma@redhat.com, virtualization@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH V3 00/19] virtio_ring in order support Date: Mon, 16 Jun 2025 16:24:58 +0800 Message-ID: <20250616082518.10411-1-jasowang@redhat.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 Hello all: This sereis tries to implement the VIRTIO_F_IN_ORDER to virtio_ring. This is done by introducing virtqueue ops so we can implement separate helpers for different virtqueue layout/features then the in-order were implemented on top. Tests shows 3%-5% imporvment with packed virtqueue PPS with KVM guest testpmd on the host. Changes since V2: - Fix build warning when DEBUG is enabled Changes since V1: - use const global array of function pointers to avoid indirect branches to eliminate retpoline when mitigation is enabled - fix used length calculation when processing used ids in a batch - fix sparse warnings Please review. Thanks Jason Wang (19): virtio_ring: rename virtqueue_reinit_xxx to virtqueue_reset_xxx() virtio_ring: switch to use vring_virtqueue in virtqueue_poll variants virtio_ring: unify logic of virtqueue_poll() and more_used() virtio_ring: switch to use vring_virtqueue for virtqueue resize variants virtio_ring: switch to use vring_virtqueue for virtqueue_kick_prepare variants virtio_ring: switch to use vring_virtqueue for virtqueue_add variants virtio: switch to use vring_virtqueue for virtqueue_add variants virtio_ring: switch to use vring_virtqueue for enable_cb_prepare variants virtio_ring: use vring_virtqueue for enable_cb_delayed variants virtio_ring: switch to use vring_virtqueue for disable_cb variants virtio_ring: switch to use vring_virtqueue for detach_unused_buf variants virtio_ring: use u16 for last_used_idx in virtqueue_poll_split() virtio_ring: introduce virtqueue ops virtio_ring: determine descriptor flags at one time virtio_ring: factor out core logic of buffer detaching virtio_ring: factor out core logic for updating last_used_idx virtio_ring: factor out split indirect detaching logic virtio_ring: factor out split detaching logic virtio_ring: add in order support drivers/virtio/virtio_ring.c | 896 ++++++++++++++++++++++++++--------- 1 file changed, 684 insertions(+), 212 deletions(-) -- 2.34.1