linux-kernel - Re: [PATCH] pci/intr_remapping: allocate irq

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Date:	Wed, 05 Aug 2009 17:36:25 -0700
From:	Suresh Siddha <suresh.b.siddha@...el.com>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>
Subject: Re: [PATCH] pci/intr_remapping: allocate irq_iommu on node

On Wed, 2009-08-05 at 02:14 -0700, Yinghai Lu wrote:
> without this patch
> 
> [  299.175436] igbvf 0000:41:10.0: enabling device (0000 -> 0002)
> [  299.180009] igbvf 0000:41:10.0: using 64bit DMA mask
> [  299.183077] igbvf 0000:41:10.0: using 64bit consistent DMA mask
> [  299.199870] igbvf 0000:41:10.0: enabling bus mastering
> [  299.205534] igbvf 0000:41:10.0: setting latency timer to 64
> [  299.219654] reserve_memtype added 0xcfc00000-0xcfc04000, track uncached-minus, req uncached-minus, ret uncached-minus
> [  299.239615] reserve_memtype added 0xcfc20000-0xcfc21000, track uncached-minus, req uncached-minus, ret uncached-minus
> [  299.260181]   alloc irq_desc for 217 on node 2
> [  299.263501]   alloc kstat_irqs on node 2
> [  299.276276] alloc irq_2_iommu on node 0
> [  299.281847] igbvf 0000:41:10.0: irq 217 for MSI/MSI-X
> [  299.285511]   alloc irq_desc for 218 on node 2
> [  299.297813]   alloc kstat_irqs on node 2
> [  299.302543] alloc irq_2_iommu on node 0
> [  299.315358] igbvf 0000:41:10.0: irq 218 for MSI/MSI-X
> [  299.321102]   alloc irq_desc for 219 on node 2
> [  299.325932]   alloc kstat_irqs on node 2
> [  299.338616] alloc irq_2_iommu on node 0
> [  299.340789] igbvf 0000:41:10.0: irq 219 for MSI/MSI-X
> [  299.356532] igbvf 0000:41:10.0: PF still in reset state, assigning new address
> [  299.365128] igbvf 0000:41:10.0: PF still resetting
> [  299.377625] igbvf 0000:41:10.0: Intel(R) 82576 Virtual Function
> [  299.385619] igbvf 0000:41:10.0: Address: c6:e3:de:62:de:eb
> [  299.395957] igbvf 0000:41:10.0: MAC: 1
> 
> thought we could put irq_2_iommu to same node too.

Yinghai, even with this patch, we will still be allocating from node-0.
No?

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