linux-kernel - Re: [RFC] Next gen kvm api

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Message-ID: <CAG7+5M0s_F93G3dPrRQaFMVv_hPzpd-wYEPApJUDGhh3vJuy-A@mail.gmail.com>
Date:	Fri, 3 Feb 2012 10:07:18 -0800
From:	Eric Northup <digitaleric@...gle.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	KVM list <kvm@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	qemu-devel <qemu-devel@...gnu.org>
Subject: Re: [RFC] Next gen kvm api

On Thu, Feb 2, 2012 at 8:09 AM, Avi Kivity <avi@...hat.com> wrote:
[...]
>
> Moving to syscalls avoids these problems, but introduces new ones:
>
> - adding new syscalls is generally frowned upon, and kvm will need several
> - syscalls into modules are harder and rarer than into core kernel code
> - will need to add a vcpu pointer to task_struct, and a kvm pointer to
> mm_struct
- Lost a good place to put access control (permissions on /dev/kvm)
for which user-mode processes can use KVM.

How would the ability to use sys_kvm_* be regulated?
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