Re: PATCH 2.5.x disable BAR when sizing

[Grant Grundler]

On Fri, Dec 20, 2002 at 12:14:43PM -0800, Linus Torvalds wrote:
> Th eone system I had myself was a Sony PCG-CR1. I don't have any pointers
> to the discussion, it was in the late 2.3.x tree if I remember correctly.

tnx - I'll look for that.

> Unlikely. The IO-APIC on x86 is in that region, but it doesn't respond
> from external sources, it's not actually on the PCI bus and only visible
> from the CPU. And the CPU decodes that address internally and sends it on
> the APIC bus and thus PCI devices simply do not matter for it.

xAPIC != APIC
xAPIC ~= SAPIC
AFAICT, My x86 system uses an IO-xAPIC which programmed exactly like
the IO-SAPIC on IA64. i wrote the parisc IO-SAPIC support.
I haven't tried to reproduce the problem seen with IA64 on this box
and it's possible I just can't.

> There's no point in you arguing about this. The problem exists and is real
> on x86. The patch posted IS NOT GOING IN. That's final, and there's just
> no point to arguing about it.

I agree - it shouldn't.

> Alternative methods anyone?

I'll work one out with Ivan K - he usually has good ideas.

thanks,
grant