From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
the arch/x86 maintainers <x86@kernel.org>,
Nick Piggin <nickpiggin@yahoo.com.au>
Subject: Re: (spurious?) lockdep warning on Xen boot
Date: Tue, 17 Feb 2009 11:27:54 -0800 [thread overview]
Message-ID: <499B0FBA.4010006@goop.org> (raw)
In-Reply-To: <1234868345.4744.71.camel@laptop>
Peter Zijlstra wrote:
> Right, so you are saying you started out with IRQs enabled, and the
> above local_irq_restore() would simply be the first irq-op to re-enable
> it and goes splat.
>
Yep.
> In which case your disabled from beginning 'fix' looks like the right
> thing to do.
>
OK.
>> Or perhaps the second warning is real; in which case, where does the
>> problem lie? (I guess another case of being bitten by calling
>> __purge_vmap_area_lazy from interrupt context.)
>>
>
> Looks like a real problem, and yes your suggestion makes sense.
>
OK.
Thanks,
J
prev parent reply other threads:[~2009-02-17 19:28 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-16 22:49 (spurious?) lockdep warning on Xen boot Jeremy Fitzhardinge
2009-02-17 10:59 ` Peter Zijlstra
2009-02-17 19:27 ` Jeremy Fitzhardinge [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=499B0FBA.4010006@goop.org \
--to=jeremy@goop.org \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@elte.hu \
--cc=nickpiggin@yahoo.com.au \
--cc=peterz@infradead.org \
--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.