Re: [PATCH 09/11] x86/boot: Support parallel startup of secondary CPUs

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On Thu, 2021-12-09 at 16:50 +0100, Peter Zijlstra wrote:
> On Thu, Dec 09, 2021 at 03:09:36PM +0000, David Woodhouse wrote:
> 
> > +	lock
> > +	btrl	$0, (%rax)
> 
> 
> > +	lock
> > +	btsw	$0, tr_lock
> 
> I find that really weird style, but whatever..

I think it's fairly gratuitous too. There's no reason we can't use btsl
even in .code16. I'll fix it.

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