Re: [GIT PULL] SLAB changes for v2.6.39-rc1

From: Pekka Enberg
Date: Thu Mar 24 2011 - 14:55:59 EST


On Thu, Mar 24, 2011 at 8:47 PM, Christoph Lameter <cl@xxxxxxxxx> wrote:
>
> On Thu, 24 Mar 2011, Eric Dumazet wrote:
>
>> > this_cpu_cmpxchg16b_emu:
>> >         pushf
>> >         cli
>> >
>> >         cmpq %gs:(%rsi), %rax
>
>> Random guess
>>
>> Masking interrupts, and accessing vmalloc() based memory for the first
>> time ?
>
> Hmmm.. Could be. KVM would not really disable interrupts so this may
> explain that the test case works here.
>
> Simple fix would be to do a load before the cli I guess.

Btw, I tried Ingo's .config and it doesn't boot here so it's somehow
.config related.
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