Re: [Xen-devel] [PATCHv1] xen/events/fifo: Handle linked events when closing a PIRQ port

[Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>]

On 08/10/2015 10:24 AM, David Vrabel wrote:
> Commit fcdf31a7c162de0c93a2bee51df4688ab0a348f8 (xen/events/fifo:
> Handle linked events when closing a port) did not handle closing a
> port bound to a PIRQ because these are closed from shutdown_pirq()
> which is called with interrupts disabled.
>
> Defer the close to a work queue where we can safely spin waiting for
> the LINKED bit to clear.  For simplicity, the close is always deferred
> even if it is not required (i.e., we're already in process context).
>
> Signed-off-by: David Vrabel <david.vrabel@xxxxxxxxxx>
> Cc: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
Reviewed-by: Boris Ostrovsky <bori.ostrovsky@xxxxxxxxxx>



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