From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@suse.com>
Subject: Re: [PATCH v16 01/10] x86: add generic resource (e.g.
 MSR) access hypercall
Date: Fri, 26 Sep 2014 09:28:21 +0100
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>>> On 25.09.14 at 21:57, <andrew.cooper3@citrix.com> wrote:
> On a different note, you need to enforce a maximum resource_op.nr of
> something rather low to (16/32 perhaps?) to prevent a toolstack asking
> for 0xffffffff non-preemptible operations.

I'd start out as low as we can, i.e. right now just 2 (write followed
by read). Any increase of the threshold will then need proper (and
trackable) reasoning.

Jan