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From: "Michael S. Tsirkin" <mst@redhat.com>
To: Jason Wang <jasowang@redhat.com>
Cc: kvm@vger.kernel.org, virtualization@lists.linux-foundation.org,
	netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
	rob.miller@broadcom.com, lingshan.zhu@intel.com,
	eperezma@redhat.com, lulu@redhat.com, shahafs@mellanox.com,
	hanand@xilinx.com, mhabets@solarflare.com, gdawar@xilinx.com,
	saugatm@xilinx.com, vmireyno@marvell.com,
	zhangweining@ruijie.com.cn, eli@mellanox.com
Subject: Re: [PATCH 5/6] vdpa: introduce virtio pci driver
Date: Tue, 2 Jun 2020 01:09:34 -0400	[thread overview]
Message-ID: <20200602010809-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <20200529080303.15449-6-jasowang@redhat.com>

On Fri, May 29, 2020 at 04:03:02PM +0800, Jason Wang wrote:
> Note that since virtio specification does not support get/restore
> virtqueue state. So we can not use this driver for VM. This can be
> addressed by extending the virtio specification.

Looks like exactly the kind of hardware limitation VDPA is supposed to
paper over within guest. So I suggest we use this as
a litmus test, and find ways for VDPA to handle this without
spec changes.

-- 
MST


  parent reply	other threads:[~2020-06-02  5:15 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-05-29  8:02 [PATCH 0/6] vDPA: doorbell mapping Jason Wang
2020-05-29  8:02 ` Jason Wang
2020-05-29  8:02 ` [PATCH 1/6] vhost: allow device that does not depend on vhost worker Jason Wang
2020-05-29  8:02   ` Jason Wang
2020-06-02  5:01   ` Michael S. Tsirkin
2020-06-02  7:04     ` Jason Wang
2020-06-02  7:04       ` Jason Wang
2020-05-29  8:02 ` [PATCH 2/6] vhost: use mmgrab() instead of mmget() for non worker device Jason Wang
2020-05-29  8:03 ` [PATCH 3/6] vdpa: introduce get_vq_notification method Jason Wang
2020-05-29  8:03   ` Jason Wang
2020-05-29  8:03 ` [PATCH 4/6] vhost_vdpa: support doorbell mapping via mmap Jason Wang
2020-05-29  9:16   ` Mika Penttilä
2020-05-29  9:24     ` Jason Wang
2020-05-29 18:30   ` Rob Miller
2020-05-29 18:30     ` [virtio-dev] " Rob Miller
2020-06-02  2:04     ` Jason Wang
2020-06-02  2:04       ` Jason Wang
2020-06-02  2:04       ` Jason Wang
2020-06-01 19:22   ` kbuild test robot
2020-06-01 19:22     ` kbuild test robot
2020-06-01 19:22     ` kbuild test robot
2020-06-02  4:56     ` Michael S. Tsirkin
2020-06-02  4:56       ` Michael S. Tsirkin
2020-06-02  6:49       ` Jason Wang
2020-06-02  6:49         ` Jason Wang
2020-06-02 13:31         ` Michael S. Tsirkin
2020-06-02 13:31           ` Michael S. Tsirkin
2020-06-03  4:18           ` Jason Wang
2020-06-03  4:18             ` Jason Wang
2020-06-03  6:34             ` Michael S. Tsirkin
2020-06-03  6:34               ` Michael S. Tsirkin
2020-06-03  6:37               ` Jason Wang
2020-06-03  6:37                 ` Jason Wang
2020-05-29  8:03 ` [PATCH 5/6] vdpa: introduce virtio pci driver Jason Wang
2020-05-29  8:03   ` Jason Wang
2020-06-02  5:08   ` Michael S. Tsirkin
2020-06-02  7:08     ` Jason Wang
2020-06-05  8:54       ` Jason Wang
2020-06-05  8:54         ` Jason Wang
2020-06-07 13:51         ` Michael S. Tsirkin
2020-06-07 13:51           ` Michael S. Tsirkin
2020-06-08  3:32           ` Jason Wang
2020-06-08  3:32             ` Jason Wang
2020-06-08  6:32             ` Michael S. Tsirkin
2020-06-08  9:18               ` Jason Wang
2020-06-08  9:31                 ` Michael S. Tsirkin
2020-06-08  9:43                   ` Jason Wang
2020-06-08  9:45                     ` Michael S. Tsirkin
2020-06-08  9:45                       ` Michael S. Tsirkin
2020-06-08  9:46                       ` Jason Wang
2020-06-08  9:54                         ` Michael S. Tsirkin
2020-06-08 10:07                           ` Jason Wang
2020-06-08 13:29                             ` Michael S. Tsirkin
2020-06-08 13:29                               ` Michael S. Tsirkin
2020-06-09  5:55                               ` Jason Wang
2020-06-02  5:09   ` Michael S. Tsirkin [this message]
2020-06-02  7:12     ` Jason Wang
2020-06-04 18:50       ` Michael S. Tsirkin
2020-05-29  8:03 ` [PATCH 6/6] vdpa: vp_vdpa: report doorbell location Jason Wang
2020-05-29  8:03   ` Jason Wang

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