Re: [Qemu-devel] [PATCH v3 14/14] i386: ACPI table generation code from seabios

[Michael S. Tsirkin]

On Thu, Jul 25, 2013 at 03:06:25PM +0200, Gerd Hoffmann wrote:
>   Hi,
> 
> >     As table content is likely to change over time,
> >     the following measures are taken to simplify
> >     cross-version migration:
> >     - All tables besides the RSDP are packed in a single FW CFG entry.
> >       This entry size is currently 23K. We round it up to 64K
> >       to avoid too much churn there.
> 
> Does it need to be that way?  I'd prefer to have one fw_cfg entry per table.
> 
> cheers,
>   Gerd
> 

It's better I think.  The advantages are:
        - when we add more tables we don't break cross-version
          migration compatibility
        - we have limited number of files, this way we won't
          run out of them

what are advantages of file per table?