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Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen |
Date: |
Tue, 24 Jan 2012 11:21:41 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.24) Gecko/20111104 Red Hat/3.1.16-2.el6_1 Thunderbird/3.1.16 |
Hi,
>>> We really should view RAM as just another device so I don't like the
>>> idea of
>>> propagating a global concept of "when RAM is restored" because that
>>> treats it
>>> specially compared to other devices.
>>>
>>> But viewing RAM as just another device, having Xen only restore a
>>> subset of
>>> devices should be a reasonable thing to do moving forward.
I don't think modeling device memory (i.e. vga vram) as something
independent from the device (vga) is a good idea. Because it isn't.
>> To my understanding, QXL will break identically on Xen for the same
>> reason: the reset handler assumes it can deal with the VRAM as it likes.
Yes. Some data structures for host <-> guest communication are living
in device memory, and a reset initializes these.
> QXL also has a VGA BIOS that it could use to initialize VRAM. A similar
> change could be made for it.
Hmm. Not sure this is a good idea.
cheers,
Gerd
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, (continued)
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Jan Kiszka, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Jan Kiszka, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Anthony Liguori, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Jan Kiszka, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Anthony Liguori, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Jan Kiszka, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Anthony Liguori, 2012/01/23
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen,
Gerd Hoffmann <=
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Avi Kivity, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Stefano Stabellini, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Avi Kivity, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Anthony Liguori, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Avi Kivity, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Anthony Liguori, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Avi Kivity, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Avi Kivity, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Paolo Bonzini, 2012/01/24
- Re: [Qemu-devel] [PATCH v4 0/6] save/restore on Xen, Avi Kivity, 2012/01/24