[Qemu-devel] Re: [V2 PATCH] floppy: save and restore DIR register

[Juan Quintela]

Jason Wang <address@hidden> wrote:
> We need to keep DIR register unchanged across migration, but currently it
> depends on the media_changed flags from block layer. Since we do not
> save/restore it and the bdrv_open() called in dest node may set the
> media_changed flag when trying to open floppy image, guest driver may think 
> the
> floppy have changed after migration. To fix this, a new filed media_changed in
> FDrive strcutre was introduced in order to save and restore the it from block
> layer through pre_save/post_load callbacks.
>
> Signed-off-by: Jason Wang <address@hidden>

Reviewed-by: Juan Quintela <address@hidden>