Re: [PATCH] pci: make ROM memory resizable

[Vladimir Sementsov-Ogievskiy]

On 24.04.23 23:36, Vladimir Sementsov-Ogievskiy wrote:
> On migration, on target we load local ROM file. But actual ROM content
> migrates through migration channel. Original ROM content from local
> file doesn't matter. But when size mismatch - we have an error like
>
>   Size mismatch: 0000:00:03.0/virtio-net-pci.rom: 0x40000 != 0x80000: Invalid 
> argument
>
> Let's just allow resizing of ROM memory. This way migration is not
> relate on local ROM file on target node which is loaded by default but
> is not actually needed.
>
> Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>

Seems, automatically reconfigure the memory on incoming migration is not so 
easy.. ROM size really influence config of the device, and after some digging 
in the code I still cannot say where it happens.

So, I'm going to suggest another way, new series "[PATCH 0/3] ROM migration" 
will substitute this patch.

--
Best regards,
Vladimir