Re: Linux guest domain with two vnets bound to the same vswitchexperiences hung in bootup (sun_netraT5220)

[David Miller]

From: hyl <heyongli@xxxxxxxxx>
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@xxxxxxxxx>

Thank you for this bug report and patch, I am looking at
it now.
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