Re: [Qemu-devel] Support for out-of-code cpu definitions

[Anthony Liguori <anthony@codemonkey.ws>]

Blue Swirl wrote:
> On 2/11/09, Amit Shah <amit.shah@redhat.com> wrote:
>   
>>  This patch series adds support for out-of-code cpu definitions. This helps
>>  us move the definitions out of target-i386/helper.c. The result is we can
>>  store the definitions in plain-text; add, modify the definitions without
>>  having to recompile and most importantly, some management servers can
>>  define their own CPU types based on the network topology to create
>>  migration-safe cpu types.
>>
>>  The first patch in the series was sent earlier, just converts the usage of
>>  bios_dir to get_datafile_dir(), as the path that's referred to stores more
>>  than just the bios (keymaps, and now, the cpudefs).
>>
>>  The cpudef file currently is very similar to the code that was in helper.c.
>>
>>  Comments welcome on the format.
>>     
>
> Instead of this change, IMHO we should wait for either the
> configuration file format to be fixed, or use FDT for all HW
> definitions. This format is not generic enough, definitely not
> suitable for Sparc CPU features. But if the config or FDT does not
> appear, we could use this as a starting point.
>   

I agree.  If you switch cpudef to FDT, that could provide an 
intermediate step between what we have today and a full machine description.

Regards,

Anthony Liguori