Messages in this thread | | | Date | Fri, 1 May 2015 09:21:26 +0200 | From | Ingo Molnar <> | Subject | Re: [PATCH 1/2] UV: NMI: insert per_cpu accessor function on uv_hub_nmi. |
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* George Beshers <gbeshers@sgi.com> wrote:
> UV: NMI: insert this_cpu_read accessor function on uv_hub_nmi. > > UV NMI was accidently broken by this patch.
Broken in what way?
> commit e16321709c8270f9803bbfdb51e5e02235078c7f > Author: Christoph Lameter <cl@linux.com> > Date: Sun Aug 17 12:30:41 2014 -0500
That's a rather old patch. Was no upstream kernel tested since ~August last year on UV hardware, or is the bug sporadic? The changelog does not tell us.
> This patch insert this_cpu_read() on when accessing the PER_CPU > uv_cpu_nmi variable.
Why? What problem does it solve?
Thanks,
Ingo
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