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xen-devel
[Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead
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To: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx> |
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Subject: |
[Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator. |
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From: |
"H. Peter Anvin" <hpa@xxxxxxxxx> |
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Date: |
Mon, 25 Oct 2010 16:05:30 -0700 |
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Cc: |
xen-devel@xxxxxxxxxxxxxxxxxxx, Ian Campbell <ian.campbell@xxxxxxxxxx>, Stefano Stabellini <Stefano.Stabellini@xxxxxxxxxxxxx>, Konrad Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, mingo@xxxxxxx, tglx@xxxxxxxxxxxxx |
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Mon, 25 Oct 2010 16:07:07 -0700 |
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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
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- Re: [Xen-devel] Re: [tip:irq/core] x86: xen: Sanitise sparse_irq handling, (continued)
- [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Jeremy Fitzhardinge
- [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator.,
H. Peter Anvin <=
- [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Jeremy Fitzhardinge
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Konrad Rzeszutek Wilk
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Jeremy Fitzhardinge
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Konrad Rzeszutek Wilk
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Stefano Stabellini
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Sander Eikelenboom
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Stefano Stabellini
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Konrad Rzeszutek Wilk
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Jeremy Fitzhardinge
- Re: [Xen-devel] Re: [PATCH 1/5] xen: events: use irq_alloc_desc(_at) instead of open-coding an IRQ allocator., Jeremy Fitzhardinge
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