Re: 2.6.27-rc1 >4096MB issue

[Jeremy Fitzhardinge <jeremy@goop.org>]

Carl Jones wrote:
> Hi,
>
> I'm testing 2.6.27-rc1 and seem to have an issue when booting the domU
> with >4096MB.
>
> Xen: 3.2.1 x86_64 2.6.18.8 xen.org kernel
> domU: 2.6.27-rc1 32bit PAE
>
> # xm list test1
> Name                                        ID   Mem VCPUs      State   Time(s)
> test1                                       24  6000     2     -b----      5.6
> # xm console test1
> free -m
>              total       used       free     shared    buffers     cached
> Mem:          1904         75       1828          0         19         15
> -/+ buffers/cache:         40       1864
> Swap:         2047          0       2047
> testing:~# uname -a
> Linux testing 2.6.27-rc1-xenU #2 SMP Thu Jul 31 22:57:42 EDT 2008 i686 GNU/Linux
>
> (Minimal) Config: http://radium.outervoid.net/~carl/2.6.27-rc1
>
> I see the same when using .26. Am I perhaps missing an option somewhere?
The config has all the obvious things (namely, HIGHMEM64G).

Hm, it does look like something is truncating at 4G and wrapping.  The 
question is whether the system really only has 2G available to it, or if 
it's just mis-reporting.

Can you post the full boot log, and the contents of /proc/meminfo?

Thanks,
    J