From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ian Campbell <ian.campbell@citrix.com>
Subject: Re: [PATCH] x86/hvm: Allow the guest to permit the use
 of userspace hypercalls
Date: Thu, 14 Jan 2016 10:50:59 +0000
Message-ID: <1452768659.2185.18.camel@citrix.com>
References: <1452520774-16794-1-git-send-email-andrew.cooper3@citrix.com>
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On Mon, 2016-01-11 at 13:59 +0000, Andrew Cooper wrote:
> Arm folks: Is something like this sufficiently generic to be useful on
> Arm, perhaps with more generic naming?

ARM's HVC instruction is always invalid from userspace, i.e. it would
result in #UNDEF and there is no control bit to make it do otherwise, so I
think there isn't much point.

Ian.