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Re: [PATCH] xen/trace: Don't dump offline CPUs in debugtrace_dump_worker()

To: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
From: Jan Beulich <jbeulich@xxxxxxxx>
Date: Fri, 22 May 2020 14:58:36 +0200
Cc: Juergen Gross <jgross@xxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Wei Liu <wl@xxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
Delivery-date: Fri, 22 May 2020 12:58:42 +0000
List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 21.05.2020 10:44, Andrew Cooper wrote:
> The 'T' debugkey reliably wedges on one of my systems, which has a sparse
> APIC_ID layout due to a non power-of-2 number of cores per socket.  The
> per_cpu(dt_cpu_data, cpu) calcution falls over the deliberately non-canonical
> poison value.
> 
> Signed-off-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>

Acked-by: Jan Beulich <jbeulich@xxxxxxxx>

References:
- [PATCH] xen/trace: Don't dump offline CPUs in debugtrace_dump_worker()
  - From: Andrew Cooper

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