Re: [BUG 2.6.31-rc1] HIGHMEM64G causes hang in PCI init on 32-bit x86

Mikael Pettersson
2009-06-27T21:34:49Z

H. Peter Anvin writes:
> Mikael Pettersson wrote:
> >
> > Sure. This is from 2.6.31-rc1 with the commit commented out and
> > replaced by a debug printk:
> >
> > identify_cpu: ->x86_phys_bits == 36, would change iomem_resource.end from 0xffffffffffffffff to 0x0000000fffffffff
> >
> > which looks correct for HIGHMEM64G.
>
> OK, I'm going to revert the checkin... however, we still need to figure
> out what the right answer here is, and why this broke (and why none of
> my tests showed this failure...)
>
> However, it is clear that the answer is more complex than we originally
> anticipated. Mikael, would you be willing to run some experiments over
> the near future?

Yes

/Mikael