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Re: [Xen-devel] [xen-unstable test] 6947: regressions - trouble: broken/fail/pass

  • To: Jan Beulich <JBeulich@xxxxxxxxxx>
  • From: Keir Fraser <keir.xen@xxxxxxxxx>
  • Date: Mon, 02 May 2011 14:39:19 +0100
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Mon, 02 May 2011 06:40:24 -0700
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  • Thread-topic: [Xen-devel] [xen-unstable test] 6947: regressions - trouble: broken/fail/pass
On 02/05/2011 14:14, "Keir Fraser" <keir.xen@xxxxxxxxx> wrote:

> We'd probably also need an extra lock to protect against concurrent
> radix-tree update operations (should be pretty straightforward to add
> however, needing to protect *only* the radix-tree update calls).

Actually this second lock would need to encompass both the logical and
physical insert/delete operations. Possibly there is already a non-IRQ lock
on these code paths that can contain irq_desc-locked regions. If not then
such a lock would need to be added.

 -- Keir



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