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[Xen-devel] Re: [PATCH RFC V2 3/5] jump_label: if a key has already been

To: "H. Peter Anvin" <hpa@xxxxxxxxx>
Subject: [Xen-devel] Re: [PATCH RFC V2 3/5] jump_label: if a key has already been initialized, don't nop it out
From: Jason Baron <jbaron@xxxxxxxxxx>
Date: Thu, 6 Oct 2011 14:43:50 -0400
Cc: Jeremy Fitzhardinge <jeremy@xxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Jan Glauber <jang@xxxxxxxxxxxxxxxxxx>, peterz@xxxxxxxxxxxxx, David Daney <david.daney@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Steven Rostedt <rostedt@xxxxxxxxxxx>, rth@xxxxxxxxxx, Michael Ellerman <michael@xxxxxxxxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, "David S. Miller" <davem@xxxxxxxxxxxxx>
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On Thu, Oct 06, 2011 at 11:35:49AM -0700, H. Peter Anvin wrote:
> On 10/06/2011 11:33 AM, Jason Baron wrote:
> > 
> > cool. It does add some complication, I think...detecting the 2-byte vs.
> > 5-byte, and if done at boot time, possibly taking the undesired
> > branch...
> > 
> 
> It has to be done at build time to be sane, IMO.
> 
>       -hpa
> 

agreed.

-Jason

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