Messages in this thread | | | Date | Mon, 25 Oct 2010 16:05:30 -0700 | From | "H. Peter Anvin" <> | Subject | Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator. |
| |
On 10/25/2010 04:03 PM, Jeremy Fitzhardinge wrote: > > What? Why? How? Surely if we're asking the irq subsystem to allocate > us an irq, it will return a fresh never-before-used (and certainly not > shared) irq? Shared irqs only make sense if multiple devices are > actually sharing, say, a wire on the board. > > Or am I missing something? >
I think the number is not necessarily "never before used", but rather "not currently used".
-hpa
| |