linux-kernel - Re: [PATCH] Xen backend support for paged out grant targets V4.

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Message-ID: <20120921204521.GA30614@phenom.dumpdata.com>
Date:	Fri, 21 Sep 2012 16:45:21 -0400
From:	Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
To:	Andres Lagar-Cavilla <andres.lagarcavilla@...il.com>
Cc:	Andres Lagar-Cavilla <andreslc@...dcentric.ca>,
	Ian Campbell <Ian.Campbell@...rix.com>,
	Andres Lagar-Cavilla <andres@...arcavilla.org>,
	xen-devel <xen-devel@...ts.xen.org>,
	David Vrabel <david.vrabel@...rix.com>,
	David Miller <davem@...emloft.net>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: Re: [PATCH] Xen backend support for paged out grant targets V4.

> > So with this patch when I launch an PVHVM guest on Xen 4.1 I get this
> > in the initial domain and the guest is crashed:
> > 
> > [  261.927218] privcmd_fault: vma=ffff88002a31dce8 7f4edc095000-7f4edc195000, pgoff=c8, uv=00007f4edc15d000
> 
> With this patch? Or with the mmapbatch v2? This is a page fault in a foreign-mapped VMA. Not touched by this grant backend patch we are talking about.
> 
> Does the hypervisor dump anything to its console?
> 
> At which point during xc_hvm_build do you see this? (or elsewhere in the toolstack?)

My apologies. It was Oliver's persistent grant patch that does not like your patch.
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