Re: [Qemu-devel] [PATCH for-2.4 0/3] Migration regressions with Xen.

[Anthony PERARD <anthony.perard@citrix.com>]

This is a critical issue for Xen as migration either with the same version
of QEMU, or from a previous version of QEMU is broken.

Any suggestion on how to move forward?

On Tue, Jul 28, 2015 at 04:54:42PM +0100, Anthony PERARD wrote:
> Hi,
> 
> We've spotted several regression which prevent migration with Xen using the
> same version of QEMU or from a previous version of QEMU (tryied with 2.2).
> 
> Regression have been introduce by at least:
> - df4b1024526cae3479da3492d6371fd4a7324a03
>   migration: create new section to store global state
> - 61964c23e5ddd5a33f15699e45ce126f879e3e33
>   migration: Add configuration section
> 
> The first patch would fix the default case when we use the machine 'xenfv'.
> 
> But we can also use the machine 'pc' and I don't know how to fix this case.
> The second and third patches are a step in the direction of fixing
> migration with the machine 'pc'.
> 
> I have not look at save/restore for PV guest yet.
> 
> Thanks,
> 
> Anthony PERARD (3):
>   migration: Fix regretion for xenfv machine.
>   migration: Fix global state with Xen.
>   migration: Add configuration section to vmstate with xen.
> 
>  hw/i386/pc_piix.c             | 3 +++
>  include/migration/migration.h | 1 +
>  migration/migration.c         | 7 +++++++
>  migration/savevm.c            | 6 ++++++
>  4 files changed, 17 insertions(+)

-- 
Anthony PERARD