linux-kernel - Re: [patch 2/8] Implement always-locked bit ops, for memory shared with an SMP hypervisor.

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Date:	Thu, 3 Aug 2006 04:45:38 +0200
From:	Andi Kleen <ak@...e.de>
To:	virtualization@...ts.osdl.org
Cc:	Christoph Lameter <clameter@....com>,
	Jeremy Fitzhardinge <jeremy@...p.org>, akpm@...l.org,
	xen-devel@...ts.xensource.com, Chris Wright <chrisw@...s-sol.org>,
	Ian Pratt <ian.pratt@...source.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [patch 2/8] Implement always-locked bit ops, for memory shared with an SMP hypervisor.


> Thats a good goal but what about the rest of us who have to maintain 
> additional forms of bit operations for all architectures. How much is this 
> burden?

I don't think it's that big an issue because most architectures either
use always locked bitops already or don't need them because they don't do
SMP.

So it will be fine with just a asm-generic header that defines them
to the normal bitops. Not much burden.

-Andi
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