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Date: Thu, 24 Mar 2011 20:55:54 +0200
Message-ID: <AANLkTik3rkNvLG-rgiWxKaPc-v9sZQq96ok0CXfAU+r_@mail.gmail.com>
Subject: Re: [GIT PULL] SLAB changes for v2.6.39-rc1
From: Pekka Enberg <penberg@kernel.org>
To: Christoph Lameter <cl@linux.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>, Ingo Molnar <mingo@elte.hu>,
        torvalds@linux-foundation.org, akpm@linux-foundation.org,
        tj@kernel.org, npiggin@kernel.dk, rientjes@google.com,
        linux-kernel@vger.kernel.org, linux-mm@kvack.org
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On Thu, Mar 24, 2011 at 8:47 PM, Christoph Lameter <cl@linux.com> 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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