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Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resiz
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize |
Date: |
Wed, 19 Nov 2014 17:12:30 +0200 |
On Wed, Nov 19, 2014 at 02:10:36PM +0000, Peter Maydell wrote:
> On 19 November 2014 14:07, Juan Quintela <address@hidden> wrote:
> > My understanding is that it is a "trick". We have internal memory for a
> > device that is needed for the emulation, but not showed to the guest.
> > And it is big enough that we want to save it during the "live" stage of
> > migration, so we mark it as RAM. if it is somekind of cash, we can just
> > enlarge it on destination, and it don't matter. If this has anything
> > different on the other part of the RAM, we are on trouble.
>
> Would it be feasible to just have the migration code provide
> an API for registering things to be migrated in the live
> migration stage, rather than creating memory regions which
> you can't actually use for most of the purposes the memory
> region API exists for?
>
> -- PMM
We could, it's just much more work, touching a lot more
places.
--
MST
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, (continued)
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Peter Maydell, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Juan Quintela, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Peter Maydell, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Juan Quintela, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Stefan Hajnoczi, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Paolo Bonzini, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Peter Maydell, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Paolo Bonzini, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Michael S. Tsirkin, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Juan Quintela, 2014/11/19
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCH 2/5] exec: qemu_ram_alloc_device, qemu_ram_resize, Michael S. Tsirkin, 2014/11/19
[Qemu-devel] [PATCH 4/5] memory: interface to allocate device ram, Michael S. Tsirkin, 2014/11/17
[Qemu-devel] [PATCH 5/5] acpi-build: make ROMs device RAM, make them resizeable, Michael S. Tsirkin, 2014/11/17
[Qemu-devel] [PATCH 3/5] arch_init: support resizing on incoming migration, Michael S. Tsirkin, 2014/11/17
Re: [Qemu-devel] [PATCH 0/5] pc: make ROMs resizeable, Michael S. Tsirkin, 2014/11/17
Re: [Qemu-devel] [PATCH 0/5] pc: make ROMs resizeable, Markus Armbruster, 2014/11/18