Gleb Natapov wrote: > On Wed, Jun 16, 2010 at 09:03:01AM +0200, Jan Kiszka wrote: >> Gleb Natapov wrote: >>> On Wed, Jun 16, 2010 at 12:40:28AM +0200, Jan Kiszka wrote: >>>> From: Jan Kiszka <jan.kis...@siemens.com> >>>> >>>> There is no need starting with the special value for hpet_cfg.count. >>>> Either Seabios is aware of the new firmware interface and properly >>>> interprets the counter or it simply ignores it anyway. >>>> >>> I want seabios to be able to distinguish between old qemu and new one. >> I see now. But isn't it a good chance to introduce a proper generic >> interface for exploring supported fw-cfg keys? >> > Having such interface would be nice. Pity we haven't introduced it from > the start. If we do it now seabios will have to find out somehow that > qemu support such interface. Chicken and egg ;)
That is easy: Add a key the describes the highest supported key value (looks like this is monotonously increasing). Older qemu versions will return 0. Jan
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