From: Sergiy Kibrik <sergiy.kibrik@globallogic.com>
To: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: xen-devel@lists.xenproject.org
Subject: Re: [RFC][PATCH v1] xen-fbfront: replace deferred io with buffer queue
Date: Mon, 19 Jan 2015 18:39:55 +0200 [thread overview]
Message-ID: <54BD335B.6080300@globallogic.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1501191323480.12653@kaball.uk.xensource.com>
On 1/19/2015 3:25 PM, Stefano Stabellini wrote:
>> This doesn't sound like a secure interface: a potentially very
>> > significant and unbound memory allocation in dom0 is caused by a
>> > parameter configured by the guest.
>
> Sorry, I realize now that fortunately it is the other way around.
> It would be nice to see a correspondent patch for xenfb (the backend).
> Who configures num_bufs initially in your system?
>
AFAIK there's no backend code in xen-4.x tree anymore, I found it in
old releases. But I'll find a way to present backend as well.
num_bufs should be set by xl tool according to domain config file, but
we don't have patch for xl yet (it's done manually via xenstore-write in
our setup. Fairly ugly)
--
regards,
Sergey
next prev parent reply other threads:[~2015-01-19 16:40 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-19 12:03 [RFC][PATCH v1] xen-fbfront: replace deferred io with buffer queue Sergiy Kibrik
2015-01-19 13:21 ` Stefano Stabellini
2015-01-19 13:25 ` Stefano Stabellini
2015-01-19 16:39 ` Sergiy Kibrik [this message]
2015-01-19 17:26 ` Stefano Stabellini
2015-01-19 16:33 ` Sergiy Kibrik
2015-01-19 13:31 ` Ian Campbell
2015-01-19 16:50 ` Sergiy Kibrik
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