Re: [Xen-devel] [PATCH 3/5] setup_irq/request_irq/free_irq fixups

[Espen Skoglund <espen.skoglund@xxxxxxxxxxxxx>]

[Keir Fraser]
> On 05/02/2009 20:21, "Espen Skoglund" <espen.skoglund@xxxxxxxxxxxxx> wrote:
>> Make setup_irq/request_irq/free_irq take vector param instead of
>> irq param

> Do you really think that's an improvement?

Yes.  Some interrupts, e.g., for handling IOMMU faults, do not need to
be associated with a pirq.  They just need to have a vector allocated
to them.  The way this used to work, the caller would have to invent a
IRQ to go with the vector (typically irq := vector) befor calling the
function.

        eSk


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