From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="WOrjME1a" Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 56530E8 for ; Wed, 13 Dec 2023 09:56:17 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1702490176; 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=vEKtCaZo1O9cfSPgdOwxIJB9fsJXHh/ahknjK4hJAXk=; b=WOrjME1ayHvfkTKPO5SHY7aEkcyuNMQfEGxY1jCgvKuIpbxZxpnTdAHOa+Ky51ErH03xlO oszzJXHfG/NSAmnzVTscWLbp6ao43HBPKCXDGwxiWpnw7eTImz1//3Wy0pIaM4j+86qBET wrZiY6dCHeeSbYQo9Hb/131W5KRPStk= Received: from mail-ej1-f70.google.com (mail-ej1-f70.google.com [209.85.218.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-584-UQUwczWHMNigPaCteVdNFw-1; Wed, 13 Dec 2023 12:56:15 -0500 X-MC-Unique: UQUwczWHMNigPaCteVdNFw-1 Received: by mail-ej1-f70.google.com with SMTP id a640c23a62f3a-a1fa0ed2058so224135766b.2 for ; Wed, 13 Dec 2023 09:56:15 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1702490174; x=1703094974; h=in-reply-to:content-transfer-encoding:content-disposition :mime-version:references:message-id:subject:cc:to:from:date :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=vEKtCaZo1O9cfSPgdOwxIJB9fsJXHh/ahknjK4hJAXk=; b=NSRr/XY+WNj9APRfwXBlVeNu5+qEXA2S98+v1mpamRnyai8JjNLkJhLQrLx1SJ+2vr H0LUCKrKLu0rL4UgQtr/Qw7P13rphjCPYDBhirVYx2VYjD4uJUYXRSmBcglTb2bokYL0 +pDQHAvWFRq9kmumNRnXWfvt0oEVWXvBYXyb2SjuzSBgBo2z5p0DajBGUTL+knNYiTgJ BhJ5GSGye0l6l2TUKZgai2lxwJI/2wH7o1sDGrMfaJFB2QoKJkp8caFsGP+/SbgX65QJ /lG5M4hQ5muehdi7jN+nsRX0SyS8zwygzxq1bPmbzLz8LgCopsAVUo73PkjRDy0jJJX/ kdAQ== X-Gm-Message-State: AOJu0YwNXWqwe77FBvsBpzP52joxUPNAgV4XPL8wpug1UCREpSzZYZ6d yXhAuNqlVMcbioiXYgEzlIJcqqJM0iKi5BV1TQu+XjldxSwV/AKy3IzKMVKLStZIP4Kec6oyfbv wcaf/TTpFBEC4 X-Received: by 2002:a17:906:51c9:b0:a23:94b:eb76 with SMTP id v9-20020a17090651c900b00a23094beb76mr66460ejk.110.1702490174197; Wed, 13 Dec 2023 09:56:14 -0800 (PST) X-Google-Smtp-Source: AGHT+IGc9RJlOVWyo0HyAiFTcOk5Wfn8VDPbQGBmpAhf72fm6DauJ3ApY2N3w9RPj1ICyK7MuA8IVA== X-Received: by 2002:a17:906:51c9:b0:a23:94b:eb76 with SMTP id v9-20020a17090651c900b00a23094beb76mr66447ejk.110.1702490173843; Wed, 13 Dec 2023 09:56:13 -0800 (PST) Received: from redhat.com ([109.253.189.71]) by smtp.gmail.com with ESMTPSA id uv6-20020a170907cf4600b00a1e443bc037sm8258684ejc.147.2023.12.13.09.56.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 13 Dec 2023 09:56:12 -0800 (PST) Date: Wed, 13 Dec 2023 12:56:08 -0500 From: "Michael S. Tsirkin" To: Arseniy Krasnov Cc: Stefano Garzarella , Stefan Hajnoczi , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Jason Wang , Bobby Eshleman , kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, kernel@sberdevices.ru, oxffffaa@gmail.com Subject: Re: [PATCH net-next v8 0/4] send credit update during setting SO_RCVLOWAT Message-ID: <20231213125404-mutt-send-email-mst@kernel.org> References: <20231211211658.2904268-1-avkrasnov@salutedevices.com> <20231212105423-mutt-send-email-mst@kernel.org> <20231212111131-mutt-send-email-mst@kernel.org> <7b362aef-6774-0e08-81e9-0a6f7f616290@salutedevices.com> <402ea723-d154-45c9-1efe-b0022d9ea95a@salutedevices.com> <20231213100518-mutt-send-email-mst@kernel.org> <20231213100957-mutt-send-email-mst@kernel.org> <8e6b06a5-eeb3-84c8-c6df-a8b81b596295@salutedevices.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <8e6b06a5-eeb3-84c8-c6df-a8b81b596295@salutedevices.com> On Wed, Dec 13, 2023 at 08:11:57PM +0300, Arseniy Krasnov wrote: > > > On 13.12.2023 18:13, Michael S. Tsirkin wrote: > > On Wed, Dec 13, 2023 at 10:05:44AM -0500, Michael S. Tsirkin wrote: > >> On Wed, Dec 13, 2023 at 12:08:27PM +0300, Arseniy Krasnov wrote: > >>> > >>> > >>> On 13.12.2023 11:43, Stefano Garzarella wrote: > >>>> On Tue, Dec 12, 2023 at 08:43:07PM +0300, Arseniy Krasnov wrote: > >>>>> > >>>>> > >>>>> On 12.12.2023 19:12, Michael S. Tsirkin wrote: > >>>>>> On Tue, Dec 12, 2023 at 06:59:03PM +0300, Arseniy Krasnov wrote: > >>>>>>> > >>>>>>> > >>>>>>> On 12.12.2023 18:54, Michael S. Tsirkin wrote: > >>>>>>>> On Tue, Dec 12, 2023 at 12:16:54AM +0300, Arseniy Krasnov wrote: > >>>>>>>>> Hello, > >>>>>>>>> > >>>>>>>>>                                DESCRIPTION > >>>>>>>>> > >>>>>>>>> This patchset fixes old problem with hungup of both rx/tx sides and adds > >>>>>>>>> test for it. This happens due to non-default SO_RCVLOWAT value and > >>>>>>>>> deferred credit update in virtio/vsock. Link to previous old patchset: > >>>>>>>>> https://lore.kernel.org/netdev/39b2e9fd-601b-189d-39a9-914e5574524c@sberdevices.ru/ > >>>>>>>> > >>>>>>>> > >>>>>>>> Patchset: > >>>>>>>> > >>>>>>>> Acked-by: Michael S. Tsirkin > >>>>>>> > >>>>>>> Thanks! > >>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> But I worry whether we actually need 3/8 in net not in net-next. > >>>>>>> > >>>>>>> Because of "Fixes" tag ? I think this problem is not critical and reproducible > >>>>>>> only in special cases, but i'm not familiar with netdev process so good, so I don't > >>>>>>> have strong opinion. I guess @Stefano knows better. > >>>>>>> > >>>>>>> Thanks, Arseniy > >>>>>> > >>>>>> Fixes means "if you have that other commit then you need this commit > >>>>>> too". I think as a minimum you need to rearrange patches to make the > >>>>>> fix go in first. We don't want a regression followed by a fix. > >>>>> > >>>>> I see, ok, @Stefano WDYT? I think rearrange doesn't break anything, because this > >>>>> patch fixes problem that is not related with the new patches from this patchset. > >>>> > >>>> I agree, patch 3 is for sure net material (I'm fine with both rearrangement or send it separately), but IMHO also patch 2 could be. > >>>> I think with the same fixes tag, since before commit b89d882dc9fc ("vsock/virtio: reduce credit update messages") we sent a credit update > >>>> for every bytes we read, so we should not have this problem, right? > >>> > >>> Agree for 2, so I think I can rearrange: two fixes go first, then current 0001, and then tests. And send it as V9 for 'net' only ? > >>> > >>> Thanks, Arseniy > >> > >> > >> hmm why not net-next? > > > > Oh I missed your previous discussion. I think everything in net-next is > > safer. Having said that, I won't nack it net, either. > > So, summarizing all above: > 1) This patchset entirely goes to net-next as v9 > 2) I reorder patches like 3 - 2 - 1 - 4, e.g. two fixes goes first with Fixes tag > 3) Add Acked-by: Michael S. Tsirkin to each patch > > @Michael, @Stefano ? > > Thanks, Arseniy Fine by me. > > > >>>> > >>>> So, maybe all the series could be "net". > >>>> > >>>> Thanks, > >>>> Stefano > >>>> > >