Re: [PATCH] ARM: Add support for LPAE style CONTEXTIDR

[Will Deacon]

On Mon, Jun 24, 2013 at 03:39:09PM +0100, Christopher Covington wrote:
> Hi Will,
> 
> On 06/24/2013 10:04 AM, Will Deacon wrote:
> [...]
> 
> > What's the advantage of this approach, other than you get an extra byte's
> > worth of PID?
> 
> In my view, the real advantage is that the the PID is located where people
> reading ARM Architecture Reference Manual are told they can find it.

Perhaps, but I'd usually expect a debugger or trace tools to do something
with the PID, and they likely expect it to be shifted, so you can't really
win.

Will
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