From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_HELO_NONE, SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 452FCCA9EBD for ; Mon, 28 Oct 2019 07:12:36 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1A04A214AF for ; Mon, 28 Oct 2019 07:12:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="UY8+90j8" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730911AbfJ1HMf (ORCPT ); Mon, 28 Oct 2019 03:12:35 -0400 Received: from us-smtp-1.mimecast.com ([205.139.110.61]:26791 "EHLO us-smtp-delivery-1.mimecast.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1726834AbfJ1HMe (ORCPT ); Mon, 28 Oct 2019 03:12:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1572246753; 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=1bJKnujWpr7YRcLrIv1lIWngHNVCjyX+UL1+wlKxJ2g=; b=UY8+90j8gnkK6KZAPFS4HUWzJXt63JuWzv2R46tK2Tlv8g4LyoVYCqAAiTi9CskDqHmOlO PMtb2wsCONBEVOBy6ZRZ1MKIGCOCisb7hvC3q47EctayD/Jpc4NqW5mE8sQu45mUnnUKh2 EuRtCFF1r+zHCDF47L467jThUe8cPB4= 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-344-At9xNW3hOQm_R1yoPs1x2Q-1; Mon, 28 Oct 2019 03:12:31 -0400 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id ACF261005509; Mon, 28 Oct 2019 07:12:30 +0000 (UTC) Received: from [10.72.12.88] (ovpn-12-88.pek2.redhat.com [10.72.12.88]) by smtp.corp.redhat.com (Postfix) with ESMTP id 7E2E45DA32; Mon, 28 Oct 2019 07:12:22 +0000 (UTC) Subject: Re: [PATCH] virtio_ring: fix stalls for packed rings To: Sasha Levin , "Michael S. Tsirkin" , Marvin Liu , linux-kernel@vger.kernel.org Cc: stable@vger.kernel.org References: <20191027100705.11644-1-mst@redhat.com> <20191028065918.8487020873@mail.kernel.org> From: Jason Wang Message-ID: <66297f13-4c92-ae1a-25b1-8573f12b30d7@redhat.com> Date: Mon, 28 Oct 2019 15:12:19 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.8.0 MIME-Version: 1.0 In-Reply-To: <20191028065918.8487020873@mail.kernel.org> Content-Language: en-US X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 X-MC-Unique: At9xNW3hOQm_R1yoPs1x2Q-1 X-Mimecast-Spam-Score: 0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: quoted-printable Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2019/10/28 =E4=B8=8B=E5=8D=882:59, Sasha Levin wrote: > Hi, > > [This is an automated email] > > This commit has been processed because it contains a -stable tag. > The stable tag indicates that it's relevant for the following trees: all > > The bot has tested the following trees: v5.3.7, v4.19.80, v4.14.150, v4.9= .197, v4.4.197. > > v5.3.7: Build OK! > v4.19.80: Failed to apply! Possible dependencies: > 138fd25148638 ("virtio_ring: add _split suffix for split ring functi= ons") > 1ce9e6055fa0a ("virtio_ring: introduce packed ring support") > cbeedb72b97ad ("virtio_ring: allocate desc state for split ring sepa= rately") > d79dca75c7968 ("virtio_ring: extract split ring handling from ring c= reation") > e593bf9751566 ("virtio_ring: put split ring fields in a sub struct") > e6f633e5beab6 ("virtio_ring: put split ring functions together") > f51f982682e2a ("virtio_ring: leverage event idx in packed ring") > fb3fba6b162aa ("virtio_ring: cache whether we will use DMA API") > > v4.14.150: Failed to apply! Possible dependencies: > 138fd25148638 ("virtio_ring: add _split suffix for split ring functi= ons") > 1ce9e6055fa0a ("virtio_ring: introduce packed ring support") > cbeedb72b97ad ("virtio_ring: allocate desc state for split ring sepa= rately") > d79dca75c7968 ("virtio_ring: extract split ring handling from ring c= reation") > e593bf9751566 ("virtio_ring: put split ring fields in a sub struct") > e6f633e5beab6 ("virtio_ring: put split ring functions together") > f51f982682e2a ("virtio_ring: leverage event idx in packed ring") > fb3fba6b162aa ("virtio_ring: cache whether we will use DMA API") > > v4.9.197: Failed to apply! Possible dependencies: > 0c7eaf5930e14 ("virtio_ring: fix description of virtqueue_get_buf") > 138fd25148638 ("virtio_ring: add _split suffix for split ring functi= ons") > 1ce9e6055fa0a ("virtio_ring: introduce packed ring support") > 44ed8089e991a ("scsi: virtio: Reduce BUG if total_sg > virtqueue siz= e to WARN.") > 5a08b04f63792 ("virtio: allow extra context per descriptor") > c60923cb9cb5e ("virtio_ring: fix complaint by sparse") > cbeedb72b97ad ("virtio_ring: allocate desc state for split ring sepa= rately") > e593bf9751566 ("virtio_ring: put split ring fields in a sub struct") > e6f633e5beab6 ("virtio_ring: put split ring functions together") > f51f982682e2a ("virtio_ring: leverage event idx in packed ring") > fb3fba6b162aa ("virtio_ring: cache whether we will use DMA API") > > v4.4.197: Failed to apply! Possible dependencies: > 0c7eaf5930e14 ("virtio_ring: fix description of virtqueue_get_buf") > 138fd25148638 ("virtio_ring: add _split suffix for split ring functi= ons") > 1ce9e6055fa0a ("virtio_ring: introduce packed ring support") > 44ed8089e991a ("scsi: virtio: Reduce BUG if total_sg > virtqueue siz= e to WARN.") > 5a08b04f63792 ("virtio: allow extra context per descriptor") > 780bc7903a32e ("virtio_ring: Support DMA APIs") > c60923cb9cb5e ("virtio_ring: fix complaint by sparse") > d26c96c810254 ("vring: Introduce vring_use_dma_api()") > e6f633e5beab6 ("virtio_ring: put split ring functions together") > f51f982682e2a ("virtio_ring: leverage event idx in packed ring") > fb3fba6b162aa ("virtio_ring: cache whether we will use DMA API") > > > NOTE: The patch will not be queued to stable trees until it is upstream. > > How should we proceed with this patch? It is only needed for kernel > 4.20. Thanks >