linux-kernel - Re: [PATCH 1/1] Drivers: hv: Implement the file copy service

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Date:	Thu, 9 Jan 2014 23:09:21 +0300
From:	Dan Carpenter <dan.carpenter@...cle.com>
To:	KY Srinivasan <kys@...rosoft.com>
Cc:	"olaf@...fle.de" <olaf@...fle.de>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>,
	"jasowang@...hat.com" <jasowang@...hat.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"apw@...onical.com" <apw@...onical.com>,
	"devel@...uxdriverproject.org" <devel@...uxdriverproject.org>
Subject: Re: [PATCH 1/1] Drivers: hv: Implement the file copy service

We've had this discussion before where you urge me to trust the host...

 Problem: This code is racy.
Solution: The host will only send one message at a time.

Now I have to audit the user space code on the host and I don't feel
like doing that so you win.

I wish we had a better way to do IPC.  If kdbus were ready, that might
have worked for this, and it's a better solution because both sender and
reciever code will be written in a less trusting way.

regards,
dan carpenter

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