Re: [PATCH v2 2/2] pci: add romsize property

[Paolo Bonzini <pbonzini@redhat.com>]

On 29/01/21 20:51, BALATON Zoltan wrote:
> otherwise the BIOS emulator in the guest firmware crashes and this works 
> so I think romfile can be empty and it's a useful feature to have in 
> this case for example. I don't know if this patch changes anything about 
> that but the commit message saying that romfile cannot be empty may be 
> wrong.

The empty property value configures the device not to have a ROM file at 
all.  The commit message says that ROM files (if they exist) cannot be 
empty, corresponding to this code in pci_add_option_rom:

     } else if (size == 0) {
         error_setg(errp, "romfile \"%s\" is empty", pdev->romfile);
         g_free(path);
         return;
     }

Paolo