From mboxrd@z Thu Jan  1 00:00:00 1970
From: tixy@yxit.co.uk (Tixy)
Date: Wed, 30 Mar 2011 19:34:48 +0100
Subject: How to handle kprobe bugs?
In-Reply-To: <20110330141011.GA2844@arm.com>
References: <1301493213.2488.41.camel@computer2.home>
	<20110330141011.GA2844@arm.com>
Message-ID: <1301510088.2488.184.camel@computer2.home>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Wed, 2011-03-30 at 15:10 +0100, Dave Martin wrote:
> On Wed, Mar 30, 2011 at 02:53:33PM +0100, Tixy wrote:
> > I also find that instruction emulation for some (all?) ARMv6K and newer
> > instructions are missing. E.g. hint instructions like NOP and WFI. Shall
> > I produce a second patch to add these?
> 
> Sure.
> 
> Note that you should emulate all the hinted NOPs as actual NOPs,
> since the event the hint waits for may happen in the meantime;
> under some circumstances that would lead to stalls.

Good point :-) Conversely, things like Send Event shouldn't be actual
NOPs.

-- 
Tixy