Re: [Xen-devel] 2.6.27-rc1 >4096MB issue

["Carl Jones" <carl.jones@xxxxxxxxx>]

On Fri, Aug 1, 2008 at 5:13 PM, Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:
> 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

Sure.

testing:~# cat /proc/meminfo
MemTotal:      1949928 kB
MemFree:       1887372 kB
Buffers:          6068 kB
Cached:          15968 kB
SwapCached:          0 kB
Active:          17008 kB
Inactive:        10184 kB
HighTotal:     1204232 kB
HighFree:      1181512 kB
LowTotal:       745696 kB
LowFree:        705860 kB
SwapTotal:     2097144 kB
SwapFree:      2097144 kB
Dirty:              56 kB
Writeback:           0 kB
AnonPages:        5168 kB
Mapped:           4256 kB
Slab:             2872 kB
SReclaimable:      804 kB
SUnreclaim:       2068 kB
PageTables:        500 kB
NFS_Unstable:        0 kB
Bounce:              0 kB
WritebackTmp:        0 kB
CommitLimit:   3072108 kB
Committed_AS:    27176 kB
VmallocTotal:   116728 kB
VmallocUsed:      1208 kB
VmallocChunk:   115520 kB
DirectMap4k:    186366
DirectMap2M:         0

http://radium.outervoid.net/~carl/boot.log
http://radium.outervoid.net/~carl/xmlist.log ('xm list test1 --long'
output, in case that is helpful)

Regards,
Carl

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