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Re: [Xen-devel] questions about adding MP support to gdbserver

from [Kip Macy] [Permanent Link][Original]
To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] questions about adding MP support to gdbserver
From: Kip Macy <kip.macy@xxxxxxxxx>
Date: Mon, 14 Nov 2005 09:33:24 -0800
Cc: xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>, Ian Pratt <Ian.Pratt@xxxxxxxxxxxx>
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Polling every breakpoint seems rather unwieldy. However, given that this will probably never be used with more than 4 processors it will work fine.

Thanks.
                     -Kip

There are examples in xenstat, but it uses its own interface library
(not libxenctrl) so it will probably only confuse. You have the right
approach described above anyway:
  1. getdomaininfo
  2. for (i = 0; i <= info.max_vcpu_id; i++)
  3.     getvcpuinfo / getvcpucontext
  4.     info.online tells you whether the vcpu is up or down
  5.     either way, getvcpucontext will succeed if the domU has booted
that vcpu

  -- Keir


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