WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-devel

Re: [Xen-devel] Re: IRQs, move_in_progress, -EBUSY &c

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Re: IRQs, move_in_progress, -EBUSY &c
From: George Dunlap <George.Dunlap@xxxxxxxxxxxxx>
Date: Wed, 11 Aug 2010 20:28:16 +0100
Cc: Fitzhardinge <jeremy@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Zhang, Xiantao" <xiantao.zhang@xxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>
Delivery-date: Wed, 11 Aug 2010 12:29:04 -0700
Dkim-signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:cc:content-type; bh=vRv6ov6nhUS4MlxeVzXShure9LzVy0/84uHYT5OibG0=; b=QMS6CXzDvqYuIpuMtUbJ9qDoymqWJeHYkC2lpgsF4hejVgQnK3AEMC6UVW4yvbkgAR IDWU7fX+IbGPwqW2z9ThoFHdTKUH4GlQcP1XSMo7XDnEgJxZwNV5yekArpNnypZBXxpd xTPxY/DbUwkAOC2MtEPete0FcC1aQ8df7t7IQ=
Domainkey-signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; b=JMFOcOJ/UbXb/0o79yNM6/hZ6pn8c8npw6b8DykZRiIkA9+xPfAFG2WWCLYwPlJR/i C/xH+uy9qipvohLNRcv+Td2EmfHEkhSYtV/n0Xh2dN/b1QIRDgT7dBjSbkGWizsWc0Aa nvIGl/j1JCsBkruhfuhku6EZ7snNKbQot8qn0=
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
In-reply-to: <AANLkTim2vEfCkf4+mWu96qcyT-OB-jx7cgCJcPGp+e55@xxxxxxxxxxxxxx>
List-help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-id: Xen developer discussion <xen-devel.lists.xensource.com>
List-post: <mailto:xen-devel@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>, <mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
References: <AANLkTikXxQFyA95yb7mPV9ppQ_8Xj7oThCww-e2xy2HN@xxxxxxxxxxxxxx> <C888A811.1D715%keir.fraser@xxxxxxxxxxxxx> <AANLkTim2vEfCkf4+mWu96qcyT-OB-jx7cgCJcPGp+e55@xxxxxxxxxxxxxx>
Sender: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx
On Wed, Aug 11, 2010 at 8:06 PM, George Dunlap
<George.Dunlap@xxxxxxxxxxxxx> wrote:
> Can we just call the cleanup function directly if we get -EBUSY?

If anyone is curious about the answer to this one, it's "No... at
least, not simply."  I tried it, and it hangs; probably waiting to
grab a spinlock held by someone who disabled IRQs to make sure this
didn't happen.

 -George

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel