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 Lockdep warning with init_espfix_ap() 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]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=543E9B4B.9040608@zytor.com \
--to=hpa@zytor.com \
--cc=linux-kernel@vger.kernel.org \
--cc=prarit@redhat.com \
--cc=x86@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.