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xen-devel
[Xen-devel] Re: [PATCH 13/14] x86/ticketlock: add slowpath logic
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To: |
Jan Beulich <JBeulich@xxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [PATCH 13/14] x86/ticketlock: add slowpath logic |
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From: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Date: |
Wed, 17 Nov 2010 00:56:00 -0800 |
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Cc: |
Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>, Nick Piggin <npiggin@xxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, Srivatsa Vaddagiri <vatsa@xxxxxxxxxxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Avi Kivity <avi@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, xiyou.wangcong@xxxxxxxxx, Eric Dumazet <dada1@xxxxxxxxxxxxx>, Linux Virtualization <virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx> |
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Wed, 17 Nov 2010 00:56:57 -0800 |
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On 11/17/2010 12:52 AM, Jeremy Fitzhardinge wrote:
> But, yes, %z0 sounds interesting. Is it documented anywhere? I think
> I've tried to use it in the past and run into gcc bugs.
This one: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=39590
Should be OK in this case because there's no 64-bit values to be seen...
J
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