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 Received: from ws5-mx01.kavi.com (ws5-mx01.kavi.com [34.193.7.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7D005C76188 for ; Wed, 5 Apr 2023 12:52:33 +0000 (UTC) Received: from lists.oasis-open.org (oasis.ws5.connectedcommunity.org [10.110.1.242]) by ws5-mx01.kavi.com (Postfix) with ESMTP id CA99C370F2 for ; Wed, 5 Apr 2023 12:52:32 +0000 (UTC) Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id B37F79865C3 for ; Wed, 5 Apr 2023 12:52:32 +0000 (UTC) Received: from host09.ws5.connectedcommunity.org (host09.ws5.connectedcommunity.org [10.110.1.97]) by lists.oasis-open.org (Postfix) with QMQP id A8F749865A7; Wed, 5 Apr 2023 12:52:32 +0000 (UTC) Mailing-List: contact virtio-comment-help@lists.oasis-open.org; run by ezmlm List-ID: Sender: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 9827B9865A8 for ; Wed, 5 Apr 2023 12:52:32 +0000 (UTC) X-Virus-Scanned: amavisd-new at kavi.com X-MC-Unique: dVfvtabhOYWDAS_RLnDo5Q-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680699140; 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=6ER5/T48KaGKbPd14Tf1A9Q0oSVV8kNVM0YABBYaQnk=; b=5YDDl5Wb0p1crscZ/f1OH32enzV5reNeuJDqt7OiV9qrdC4JKKEA9TXMUTGGXX5ebd tjNq3T0X+P6Z1l1QLj7NB7KqwhMbbiibCQ22hS6KiJ6HiL3XwwvmU2gvYWU0LGHK7Zgd HS2iqwOaQiXo3ld0lI4su7REoqFVmbm4xCicojqKirecjbxrINLEEc3dHH40Q7Kr7u/t 1wmk6CIQRS8Bc8SK5Qi38MH14039L5VTCJudpHPo63v6vw31BDfSdLI99ynjpNrUQho5 Ltq5JUMXi1C+3mCf70ELQHHZ+uua6fwD7yPSIeatSS0QnS1RVxb6mXJ9k9p5V92tyj7f ViRA== X-Gm-Message-State: AAQBX9fnK6F8SggS1EpzfLsCW9UrNfnzyFc1z3SVyKV2/zGC0bROVp70 +DpFqb/LJhF7T5h4/BY1KJuhP0q4t3u+LD34NWZKH4PcLuVM03Sv9EI2ycwKMyWhtgkm5UuQ6aB V7P4tQyYYbyML8KKFVRw+C3R8wyEWqILqVA== X-Received: by 2002:aa7:c68b:0:b0:502:30e6:1e47 with SMTP id n11-20020aa7c68b000000b0050230e61e47mr1779688edq.13.1680699140606; Wed, 05 Apr 2023 05:52:20 -0700 (PDT) X-Google-Smtp-Source: AKy350ZXZAV73B+FztT5bz8v/wkJQTVX/2/QlZ2ac8DTTOCO8QwDORR31O79ToeiR4DBDc9bfaqa0g== X-Received: by 2002:aa7:c68b:0:b0:502:30e6:1e47 with SMTP id n11-20020aa7c68b000000b0050230e61e47mr1779668edq.13.1680699140314; Wed, 05 Apr 2023 05:52:20 -0700 (PDT) Date: Wed, 5 Apr 2023 08:52:14 -0400 From: "Michael S. Tsirkin" To: Alexandra Winter Cc: Wen Gu , Halil Pasic , Xuan Zhuo , virtio-comment@lists.oasis-open.org, hans@linux.alibaba.com, herongguang@linux.alibaba.com, zmlcc@linux.alibaba.com, dust.li@linux.alibaba.com, tonylu@linux.alibaba.com, zhenzao@linux.alibaba.com, helinguo@linux.alibaba.com, gerry@linux.alibaba.com, cohuck@redhat.com, jasowang@redhat.com, Jan Kiszka , kgraul@linux.ibm.com, wenjia@linux.ibm.com, jaka@linux.ibm.com, hca@linux.ibm.com, twinkler@linux.ibm.com, raspl@linux.ibm.com, virtio-dev@lists.oasis-open.org Message-ID: <20230405084632-mutt-send-email-mst@kernel.org> References: <20230209033056.96657-1-xuanzhuo@linux.alibaba.com> <20230209033056.96657-2-xuanzhuo@linux.alibaba.com> <20230323154656.7f036d52.pasic@linux.ibm.com> <7a9ebec0-5e87-b80f-4f2c-c4db7ae4fe84@linux.ibm.com> MIME-Version: 1.0 In-Reply-To: <7a9ebec0-5e87-b80f-4f2c-c4db7ae4fe84@linux.ibm.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Subject: [virtio-comment] Re: [virtio-dev] Re: [virtio-comment] [PATCH v3 1/1] virtio-ism: introduce new device virtio-ism On Wed, Apr 05, 2023 at 02:39:53PM +0200, Alexandra Winter wrote: > > > On 24.03.23 05:03, Wen Gu wrote: > > > > > > On 2023/3/23 22:46, Halil Pasic wrote: > > > >> On Thu,  9 Feb 2023 11:30:56 +0800 > >> Xuan Zhuo wrote: > >> > > ... > > > > >> To get back to the things proposed here: the cdid is IMHO > >> a nice thing, and is functionally corresponding to the > >> (S)EID. But it is 16 byte wide, and I have no idea how > >> is it supposed to be used in the CLC handshake. > >> > > > > CLC handshake carry one SEID for all the SMC-D device. Considering > > coexistence with ISM, I am not sure whether we can change or increase > > the SEID.. cc Alexandra > > > > Thanks! > > Wen Gu > > As mentioned by others, discussions are ongoing. > It would be great, if we can agree on a way to use the existing CLC handshake > for SMC-D via virtio-ism and ism-loopback. > In that case SEID needs to be unique per hardware instance, cannot be increased and > can only be changed for x86 in a non-colliding way. > > An alternative would be to define new a SMC-D(?) protocol variant/version, where we > are free to define new fields (e.g. UUIDs). > > Alexandra Problem with tying to hardware is that it is blocking migration (which is a challenge with ism anyway, but still). > > > >> If this is really supposed to work with SMC and not just take > >> inspiration from it, I would like some insight from our > >> SMC experts (they are already on copy). > >> > >> Regards, > >> Halil > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org > >> For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org This publicly archived list offers a means to provide input to the OASIS Virtual I/O Device (VIRTIO) TC. In order to verify user consent to the Feedback License terms and to minimize spam in the list archive, subscription is required before posting. Subscribe: virtio-comment-subscribe@lists.oasis-open.org Unsubscribe: virtio-comment-unsubscribe@lists.oasis-open.org List help: virtio-comment-help@lists.oasis-open.org List archive: https://lists.oasis-open.org/archives/virtio-comment/ Feedback License: https://www.oasis-open.org/who/ipr/feedback_license.pdf List Guidelines: https://www.oasis-open.org/policies-guidelines/mailing-lists Committee: https://www.oasis-open.org/committees/virtio/ Join OASIS: https://www.oasis-open.org/join/ 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 Received: from ws5-mx01.kavi.com (ws5-mx01.kavi.com [34.193.7.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id A4931C76188 for ; Wed, 5 Apr 2023 12:52:24 +0000 (UTC) Received: from lists.oasis-open.org (oasis.ws5.connectedcommunity.org [10.110.1.242]) by ws5-mx01.kavi.com (Postfix) with ESMTP id D3C982ACA1 for ; Wed, 5 Apr 2023 12:52:23 +0000 (UTC) Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id BF17B9865AA for ; Wed, 5 Apr 2023 12:52:23 +0000 (UTC) Received: from host09.ws5.connectedcommunity.org (host09.ws5.connectedcommunity.org [10.110.1.97]) by lists.oasis-open.org (Postfix) with QMQP id AA6F79865A7; Wed, 5 Apr 2023 12:52:23 +0000 (UTC) Mailing-List: contact virtio-dev-help@lists.oasis-open.org; run by ezmlm List-ID: Sender: Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: Received: from lists.oasis-open.org (oasis-open.org [10.110.1.242]) by lists.oasis-open.org (Postfix) with ESMTP id 98C9F9865A8 for ; Wed, 5 Apr 2023 12:52:23 +0000 (UTC) X-Virus-Scanned: amavisd-new at kavi.com X-MC-Unique: FbQ8BN6pM8qJhcMDf-x2Zg-1 X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1680699140; 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=6ER5/T48KaGKbPd14Tf1A9Q0oSVV8kNVM0YABBYaQnk=; b=sOHTwAeDllExRgifyt1VmhdxnsRj3VCoC9Rnm5bwLuCWOcKqg3T+ZCR2NPZprnvV6i Wti9qmaDV6Vx+hLwr4kY8fPTedMVlr4r7ODFxRrDiSIf7Etf0lrdTejS8RYutfJqWsSL ihtcUqbvLP0i3DAoIrYMHFGtnVjQlJ8sPkPyy3w4WICpWHS2nt3UtjFZLfdSeXRYV3WH eGz5bm2Gj/i10T6duUpPJ+0RiUEjEnlkIAPg6AGZBQYSsKysWjoWN5LB6ygujlBbOu5R 1sUvHfWI1Hm2H56nthIsgohkp14ChjRG92uJ4GiDjwt5wZlkCbYHW1HE0RPuNi+W2dfp qkiQ== X-Gm-Message-State: AAQBX9cHu3s8SLhBIAHVpX/WCkle910xpyTuXH6txbb8+edU3kyOISdR PXOsNAnJA0+lsBaTP7mfomvnzpUGSSO8Lo0CrVNZDwkWq930XE6ouYDzU8+7aEQkbstmjavv95S 3b9cpbQz/qv4YTW3jtyEN4S98LYRp X-Received: by 2002:aa7:c68b:0:b0:502:30e6:1e47 with SMTP id n11-20020aa7c68b000000b0050230e61e47mr1779689edq.13.1680699140606; Wed, 05 Apr 2023 05:52:20 -0700 (PDT) X-Google-Smtp-Source: AKy350ZXZAV73B+FztT5bz8v/wkJQTVX/2/QlZ2ac8DTTOCO8QwDORR31O79ToeiR4DBDc9bfaqa0g== X-Received: by 2002:aa7:c68b:0:b0:502:30e6:1e47 with SMTP id n11-20020aa7c68b000000b0050230e61e47mr1779668edq.13.1680699140314; Wed, 05 Apr 2023 05:52:20 -0700 (PDT) Date: Wed, 5 Apr 2023 08:52:14 -0400 From: "Michael S. Tsirkin" To: Alexandra Winter Cc: Wen Gu , Halil Pasic , Xuan Zhuo , virtio-comment@lists.oasis-open.org, hans@linux.alibaba.com, herongguang@linux.alibaba.com, zmlcc@linux.alibaba.com, dust.li@linux.alibaba.com, tonylu@linux.alibaba.com, zhenzao@linux.alibaba.com, helinguo@linux.alibaba.com, gerry@linux.alibaba.com, cohuck@redhat.com, jasowang@redhat.com, Jan Kiszka , kgraul@linux.ibm.com, wenjia@linux.ibm.com, jaka@linux.ibm.com, hca@linux.ibm.com, twinkler@linux.ibm.com, raspl@linux.ibm.com, virtio-dev@lists.oasis-open.org Message-ID: <20230405084632-mutt-send-email-mst@kernel.org> References: <20230209033056.96657-1-xuanzhuo@linux.alibaba.com> <20230209033056.96657-2-xuanzhuo@linux.alibaba.com> <20230323154656.7f036d52.pasic@linux.ibm.com> <7a9ebec0-5e87-b80f-4f2c-c4db7ae4fe84@linux.ibm.com> MIME-Version: 1.0 In-Reply-To: <7a9ebec0-5e87-b80f-4f2c-c4db7ae4fe84@linux.ibm.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit Subject: Re: [virtio-dev] Re: [virtio-comment] [PATCH v3 1/1] virtio-ism: introduce new device virtio-ism On Wed, Apr 05, 2023 at 02:39:53PM +0200, Alexandra Winter wrote: > > > On 24.03.23 05:03, Wen Gu wrote: > > > > > > On 2023/3/23 22:46, Halil Pasic wrote: > > > >> On Thu,  9 Feb 2023 11:30:56 +0800 > >> Xuan Zhuo wrote: > >> > > ... > > > > >> To get back to the things proposed here: the cdid is IMHO > >> a nice thing, and is functionally corresponding to the > >> (S)EID. But it is 16 byte wide, and I have no idea how > >> is it supposed to be used in the CLC handshake. > >> > > > > CLC handshake carry one SEID for all the SMC-D device. Considering > > coexistence with ISM, I am not sure whether we can change or increase > > the SEID.. cc Alexandra > > > > Thanks! > > Wen Gu > > As mentioned by others, discussions are ongoing. > It would be great, if we can agree on a way to use the existing CLC handshake > for SMC-D via virtio-ism and ism-loopback. > In that case SEID needs to be unique per hardware instance, cannot be increased and > can only be changed for x86 in a non-colliding way. > > An alternative would be to define new a SMC-D(?) protocol variant/version, where we > are free to define new fields (e.g. UUIDs). > > Alexandra Problem with tying to hardware is that it is blocking migration (which is a challenge with ism anyway, but still). > > > >> If this is really supposed to work with SMC and not just take > >> inspiration from it, I would like some insight from our > >> SMC experts (they are already on copy). > >> > >> Regards, > >> Halil > >> > >> --------------------------------------------------------------------- > >> To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org > >> For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org --------------------------------------------------------------------- To unsubscribe, e-mail: virtio-dev-unsubscribe@lists.oasis-open.org For additional commands, e-mail: virtio-dev-help@lists.oasis-open.org