From: David Vrabel <david.vrabel@citrix.com>
To: Dave Scott <Dave.Scott@citrix.com>,
"xen-devel@lists.xenproject.org" <xen-devel@lists.xenproject.org>
Cc: John Else <john.else@citrix.com>,
David Vrabel <david.vrabel@citrix.com>,
Anil Madhavapeddy <anil@recoil.org>
Subject: Re: xen-gntdev gets stuck unmapping a 2nd page
Date: Wed, 10 Sep 2014 13:41:11 +0100 [thread overview]
Message-ID: <541046E7.1070208@citrix.com> (raw)
In-Reply-To: <709EE516-B56A-41E2-9DE8-9EC3898F8B22@citrix.com>
On 05/09/14 22:04, Dave Scott wrote:
> Hi,
>
> I've been playing more with vchan and I think I've hit a bug in xen-gntdev.
> It works ok if I map/unmap in a single page. If I increase the buffer size
> and cause vchan to map a second page (non-contiguous mappings via 2 distinct
> libxc calls), the process gets stuck in disk sleep when unmapping the second
> page. The same happens if I comment out the unmap and let the program exit.
>
> I'm using a 3.13 kernel:
Can you try the latest kernel? This looks like it may be a bug in the
generic memory hotplug device driver rather than something specific to
gntdev.
David
next prev parent reply other threads:[~2014-09-10 12:41 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-05 21:04 xen-gntdev gets stuck unmapping a 2nd page Dave Scott
2014-09-10 12:41 ` David Vrabel [this message]
2014-09-10 12:46 ` Dave Scott
2014-09-12 11:13 ` Dave Scott
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