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Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documen
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport |
Date: |
Wed, 20 Mar 2013 17:55:15 +0200 |
On Wed, Mar 20, 2013 at 11:15:48AM -0400, Michael R. Hines wrote:
> OK, can we make a deal? =)
>
> I'm willing to put in the work to perform the dynamic registration
> on the destination side,
> but let's go a step further and piggy-back on the effort:
>
> We need to couple this registration with a very small modification
> to save_ram_block():
>
> Currently, save_ram_block does:
>
> 1. is RDMA turned on? if yes, unconditionally add to next chunk
> (will be made to
> dynamically register on destination)
> 2. is_dup_page() ? if yes, skip
> 3. in xbzrle cache? if yes, skip
> 4. still not sent? if yes, transmit
>
> I propose adding a "stub" function that adds:
>
> 0. is page mapped? if yes, skip (always returns true for now)
> 1. same
> 2. same
> 3. same
> 4. same
>
> Then, later, in a separate patch, I can implement /dev/pagemap support.
>
> When that's done, RDMA dynamic registration will actually take effect and
> benefit from actually verifying that the page is mapped or not.
>
> - Michael
Mapped into guest? You mean e.g. for ballooning?
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, (continued)
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael S. Tsirkin, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Paolo Bonzini, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael S. Tsirkin, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Paolo Bonzini, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/19
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael S. Tsirkin, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael S. Tsirkin, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael S. Tsirkin, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael S. Tsirkin, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael S. Tsirkin, 2013/03/21
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael R. Hines, 2013/03/20
- Re: [Qemu-devel] [RFC PATCH RDMA support v4: 03/10] more verbose documentation of the RDMA transport, Michael S. Tsirkin, 2013/03/20