KVM: (bisected) e9bda3b triggers PERCPU allocation failures during module load

KVM: (bisected) e9bda3b triggers PERCPU allocation failures during module load

[Mike Galbraith]

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Greetings,

Putting 2.6.0 on a 40 core Westmere-EX box, hit the below.  Finally got
it bisected to KVM: VMX: Auto-load on CPUs with VMX.  Revert e9bda3b,
box boots clean.  modprobe kvm_intel, no problem either.  This happens
on at least two boxen with the attached or similar (other box was
2.6.1-rt1, so only fairly similar) config. 

monteverdi:/abuild/mike/linux-2.6/:[0]# grep PERCPU dmesg.bad
[    0.000000] PERCPU: Embedded 27 pages/cpu @ffff88047f800000 s80704 r8192 d21696 u262144
[   31.483133] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483203] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483235] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483242] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483245] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483259] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483269] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483279] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483318] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483323] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483338] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483341] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483348] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483351] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483371] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483378] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483390] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483395] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483400] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483415] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483420] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483428] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483469] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483471] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483480] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483488] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483494] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483498] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483521] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483534] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483537] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483549] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483553] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483728] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483733] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483735] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483742] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483745] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483747] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483772] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483793] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483862] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483883] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483912] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483919] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483922] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483927] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483943] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483973] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483976] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483988] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.483993] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.484009] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.484023] PERCPU: allocation failed, size=304 align=32, alloc from reserved chunk failed
[   31.486769] PERCPU: limit reached, disable warning


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