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Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase |
Date: |
Fri, 29 May 2015 11:55:01 +0100 |
On 29 May 2015 at 11:34, Dr. David Alan Gilbert <address@hidden> wrote:
> It's the destination I'm worried about here, not the source; lets say
> you have two devices, a & b. 'a' gets serialised, but then 'b' finds
> it has to wait, so we return to running the source and sending pages
> across. However the destination has already loaded the 'a' device state;
> so that when we serialise again we send a new 'a' device state'; I'm
> worrying here that the destination 'a' state loader would get upset
> trying to load the same state twice without somehow resetting it.
You would need to reset the system before resending device state,
I think. Device implementations rely on knowing that migration happens
into a freshly reset device, and we don't have any way of resetting
a single device, only the whole system at once.
-- PMM
- Re: [Qemu-devel] [PATCH v2 7/8] fdc: Fix MSR.RQM flag, (continued)
- [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Kevin Wolf, 2015/05/21
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, John Snow, 2015/05/21
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Dr. David Alan Gilbert, 2015/05/28
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Markus Armbruster, 2015/05/29
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Dr. David Alan Gilbert, 2015/05/29
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Kevin Wolf, 2015/05/29
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Dr. David Alan Gilbert, 2015/05/29
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Kevin Wolf, 2015/05/29
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Dr. David Alan Gilbert, 2015/05/29
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase,
Peter Maydell <=
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Dr. David Alan Gilbert, 2015/05/29
- Re: [Qemu-devel] [PATCH v2 3/8] fdc: Introduce fdctrl->phase, Kevin Wolf, 2015/05/29
[Qemu-devel] [PATCH v2 8/8] fdc-test: Test state for existing cases more thoroughly, Kevin Wolf, 2015/05/21