Re: [Qemu-devel] Modularizing QEMU RFC

[Paolo Bonzini <pbonzini@redhat.com>]

On 03/08/2015 05:09, Fam Zheng wrote:
> bdrv_probe_all is harder. If we modularize a format driver, its .bdrv_probe
> code will be in the module. If we want to do the format detection, we need to
> load all format drivers. This means if the command line has an unspecified
> format, we'll still need to load all drivers at starting phase. (I wish all
> formats are probed according to magic bytes at offset 0, so we can simplify the
> .bdrv_probe logic and do it with data matching in block.c like the protocol
> case, but that's not true for VMDK :( )

I think it's okay to say that:

- .bdrv_probe_device is not supported in modules (you have to use
file.driver=foo manually)

- not specifying a format results in all modules being loaded

Paolo