From: "H. Peter Anvin" <hpa@zytor.com>
To: Prarit Bhargava <prarit@redhat.com>
Cc: linux-kernel@vger.kernel.org, x86@kernel.org
Subject: Re: Lockdep warning with init_espfix_ap()
Date: Wed, 15 Oct 2014 09:05:31 -0700 [thread overview]
Message-ID: <543E9B4B.9040608@zytor.com> (raw)
In-Reply-To: <543E9ACE.7050009@redhat.com>
On 10/15/2014 09:03 AM, Prarit Bhargava wrote:
>>
>> It is kind of a messy situation, because this code needs to allocate
>> memory but is run before the secondary CPU is fully up. As such, it is
>> a false positive, at least in some ways.
>
> Interesting -- FWIW, I can reproduce this 100% of the time on _one_ system. It
> isn't a big deal and likely just worth noting at this point. I *always* see it
> when bringing up CPU 64 (of 128).
>
... because that is the first CPU which needs to allocate memory.
-hpa
prev parent reply other threads:[~2014-10-15 16:05 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-10-09 15:35 Prarit Bhargava
2014-10-15 15:57 ` H. Peter Anvin
2014-10-15 16:03 ` Prarit Bhargava
2014-10-15 16:05 ` H. Peter Anvin [this message]
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