linux-kernel - Re: Can we move device drivers into user-space?

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Message-ID: <CAG4AFWa3cs-V+wfL8o6PauTAOtvj8t1E_iSN5r0A8z=Aqzg0tg@mail.gmail.com>
Date:	Thu, 23 Feb 2012 11:34:08 -0500
From:	Jidong Xiao <jidong.xiao@...il.com>
To:	Cong Wang <xiyou.wangcong@...il.com>
Cc:	Kernel development list <linux-kernel@...r.kernel.org>
Subject: Re: Can we move device drivers into user-space?

On Thu, Feb 23, 2012 at 10:57 AM, Cong Wang <xiyou.wangcong@...il.com> wrote:
> On 02/23/2012 12:56 PM, Jidong Xiao wrote:
>>
>> Hi,
>
>
> Hi,
>
>
>> So is it mainly because the high overhead that prevents the user-space
>> device drivers ideas being accepted in Linux?
>>
>
> At least UIO drivers are already in Linux kernel, see drivers/uio/.
>

Oh, so does it make sense to move existing device drivers into user
space? For example, move most of the stuff located under drivers/usb
into user-space?

-Jidong
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