From: David Miller <davem@davemloft.net>
To: heyongli@gmail.com
Cc: sparclinux@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: Linux guest domain with two vnets bound to the same vswitch experiences hung in bootup (sun_netraT5220)
Date: Fri, 09 Oct 2009 15:08:29 -0700 (PDT) [thread overview]
Message-ID: <20091009.150829.218507309.davem@davemloft.net> (raw)
In-Reply-To: <505766fa0909231903t2fe2f7b6y26d2681d6d38ef0e@mail.gmail.com>
From: hyl <heyongli@gmail.com>
Date: Thu, 24 Sep 2009 10:03:25 +0800
> Subject: [PATCH] Sun ldom vnet driver dead lock
>
> if 2 vnet attach to same vswitch, ldom will report
> 2 same irq then lead to dead lock on the lp->lock
> or the vio->lock
>
> static irqreturn_t ldc_rx(int irq, void *dev_id){
> ...
> out:
> spin_unlock_irqrestore(&lp->lock, flags);
> << here run with out any lock
> send_events(lp, event_mask);
> >> vnet evetn process will dead lock on
> >> lp->lock or the vio->lock
>
> Signed-off-by: Yongli He <heyongli@gmail.com>
Thank you for this bug report and patch, I am looking at
it now.
next prev parent reply other threads:[~2009-10-09 22:08 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-23 4:37 hyl
2009-09-23 7:40 ` hyl
2009-09-24 2:03 ` hyl
2009-10-09 22:08 ` David Miller [this message]
2009-10-09 23:21 ` David Miller
2009-10-12 8:23 ` hyl
2009-10-12 10:26 ` David Miller
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