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

[Juan Quintela <quintela@xxxxxxxxxx>]

Anthony PERARD <anthony.perard@xxxxxxxxxx> wrote:
> 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?

Will send a pull requset tomorrow.

Thinking about creating a single function that is called for all needed
places, just to avoid this problem in the future.

Thanks, Juan.

>
> 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(+)

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