From: Leon Romanovsky <leon@kernel.org>
To: Junji Wei <weijunji@bytedance.com>
Cc: "Jason Gunthorpe" <jgg@nvidia.com>,
"Doug Ledford" <dledford@redhat.com>, mst <mst@redhat.com>,
"Jason Wang" <jasowang@redhat.com>,
yuval.shaia.ml@gmail.com, marcel.apfelbaum@gmail.com,
"Cornelia Huck" <cohuck@redhat.com>,
"Hannes Reinecke" <hare@suse.de>,
"Yongji Xie" <xieyongji@bytedance.com>,
柴稳 <chaiwen.cc@bytedance.com>,
"RDMA mailing list" <linux-rdma@vger.kernel.org>,
virtualization <virtualization@lists.linux-foundation.org>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [RFC 0/5] VirtIO RDMA
Date: Wed, 22 Sep 2021 16:06:09 +0300 [thread overview]
Message-ID: <YUsqQY5zY00bj4ul@unreal> (raw)
In-Reply-To: <E8353F66-4F9E-4A6A-8AB2-2A7F84DF4104@bytedance.com>
On Wed, Sep 22, 2021 at 08:08:44PM +0800, Junji Wei wrote:
> > On Sep 15, 2021, at 9:43 PM, Jason Gunthorpe <jgg@nvidia.com> wrote:
<...>
> >> 4. The FRMR api need to set key of MR through IB_WR_REG_MR.
> >> But it is impossible to change a key of mr using uverbs.
> >
> > FRMR is more like memory windows in user space, you can't support it
> > using just regular MRs.
>
> It is hard to support this using uverbs, but it is easy to support
> with uRDMA that we can get full control of mrs.
What is uRDMA?
Thanks
WARNING: multiple messages have this Message-ID (diff)
From: Leon Romanovsky <leon@kernel.org>
To: Junji Wei <weijunji@bytedance.com>
Cc: qemu-devel <qemu-devel@nongnu.org>,
"Jason Gunthorpe" <jgg@nvidia.com>, mst <mst@redhat.com>,
"RDMA mailing list" <linux-rdma@vger.kernel.org>,
"Cornelia Huck" <cohuck@redhat.com>,
yuval.shaia.ml@gmail.com,
virtualization <virtualization@lists.linux-foundation.org>,
"Yongji Xie" <xieyongji@bytedance.com>,
"Doug Ledford" <dledford@redhat.com>,
柴稳 <chaiwen.cc@bytedance.com>
Subject: Re: [RFC 0/5] VirtIO RDMA
Date: Wed, 22 Sep 2021 16:06:09 +0300 [thread overview]
Message-ID: <YUsqQY5zY00bj4ul@unreal> (raw)
In-Reply-To: <E8353F66-4F9E-4A6A-8AB2-2A7F84DF4104@bytedance.com>
On Wed, Sep 22, 2021 at 08:08:44PM +0800, Junji Wei wrote:
> > On Sep 15, 2021, at 9:43 PM, Jason Gunthorpe <jgg@nvidia.com> wrote:
<...>
> >> 4. The FRMR api need to set key of MR through IB_WR_REG_MR.
> >> But it is impossible to change a key of mr using uverbs.
> >
> > FRMR is more like memory windows in user space, you can't support it
> > using just regular MRs.
>
> It is hard to support this using uverbs, but it is easy to support
> with uRDMA that we can get full control of mrs.
What is uRDMA?
Thanks
_______________________________________________
Virtualization mailing list
Virtualization@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/virtualization
WARNING: multiple messages have this Message-ID (diff)
From: Leon Romanovsky <leon@kernel.org>
To: Junji Wei <weijunji@bytedance.com>
Cc: qemu-devel <qemu-devel@nongnu.org>,
"Jason Gunthorpe" <jgg@nvidia.com>, mst <mst@redhat.com>,
"RDMA mailing list" <linux-rdma@vger.kernel.org>,
"Jason Wang" <jasowang@redhat.com>,
"Cornelia Huck" <cohuck@redhat.com>,
yuval.shaia.ml@gmail.com,
virtualization <virtualization@lists.linux-foundation.org>,
"Yongji Xie" <xieyongji@bytedance.com>,
"Doug Ledford" <dledford@redhat.com>,
柴稳 <chaiwen.cc@bytedance.com>, "Hannes Reinecke" <hare@suse.de>
Subject: Re: [RFC 0/5] VirtIO RDMA
Date: Wed, 22 Sep 2021 16:06:09 +0300 [thread overview]
Message-ID: <YUsqQY5zY00bj4ul@unreal> (raw)
In-Reply-To: <E8353F66-4F9E-4A6A-8AB2-2A7F84DF4104@bytedance.com>
On Wed, Sep 22, 2021 at 08:08:44PM +0800, Junji Wei wrote:
> > On Sep 15, 2021, at 9:43 PM, Jason Gunthorpe <jgg@nvidia.com> wrote:
<...>
> >> 4. The FRMR api need to set key of MR through IB_WR_REG_MR.
> >> But it is impossible to change a key of mr using uverbs.
> >
> > FRMR is more like memory windows in user space, you can't support it
> > using just regular MRs.
>
> It is hard to support this using uverbs, but it is easy to support
> with uRDMA that we can get full control of mrs.
What is uRDMA?
Thanks
next prev parent reply other threads:[~2021-09-22 13:06 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-02 13:06 [RFC 0/5] VirtIO RDMA Junji Wei
2021-09-02 13:06 ` Junji Wei
2021-09-02 13:06 ` [RFC 1/5] RDMA/virtio-rdma Introduce a new core cap prot Junji Wei
2021-09-02 13:06 ` Junji Wei
2021-09-02 13:06 ` [RFC 2/5] RDMA/virtio-rdma: VirtIO RDMA driver Junji Wei
2021-09-02 13:06 ` Junji Wei
2021-09-02 13:06 ` [RFC 3/5] RDMA/virtio-rdma: VirtIO RDMA test module Junji Wei
2021-09-02 13:06 ` Junji Wei
2021-09-02 13:06 ` [RFC 4/5] virtio-net: Move some virtio-net-pci decl to include/hw/virtio Junji Wei
2021-09-02 13:06 ` Junji Wei
2021-09-02 13:06 ` [RFC 5/5] hw/virtio-rdma: VirtIO rdma device Junji Wei
2021-09-02 13:06 ` Junji Wei
2021-09-02 15:16 ` Michael S. Tsirkin
2021-09-02 15:16 ` Michael S. Tsirkin
2021-09-02 15:16 ` Michael S. Tsirkin
2021-09-03 0:57 ` [RFC 0/5] VirtIO RDMA Jason Wang
2021-09-03 0:57 ` Jason Wang
2021-09-03 0:57 ` Jason Wang
2021-09-03 7:41 ` 魏俊吉
2021-09-03 7:41 ` 魏俊吉
2021-09-15 13:43 ` Jason Gunthorpe
2021-09-22 12:08 ` Junji Wei
2021-09-22 12:08 ` Junji Wei
2021-09-22 13:06 ` Leon Romanovsky [this message]
2021-09-22 13:06 ` Leon Romanovsky
2021-09-22 13:06 ` Leon Romanovsky
2021-09-22 13:37 ` 魏俊吉
2021-09-22 13:37 ` 魏俊吉
2021-09-22 13:59 ` Leon Romanovsky
2021-09-22 13:59 ` Leon Romanovsky
2021-09-22 13:59 ` Leon Romanovsky
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