linux-kernel - RE: SR-IOV problem with Intel 82599EB (not enough MMIO resources for SR-IOV)

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Message-ID: <A3A921390EAE4044940E99EBF13D97321AE21E15@FMSMSX104.amr.corp.intel.com>
Date:	Tue, 13 Nov 2012 16:04:53 +0000
From:	"Li, Sibai" <sibai.li@...el.com>
To:	Jason Gao <pkill.2012@...il.com>,
	"bhelgaas@...gle.com" <bhelgaas@...gle.com>,
	"Rose, Gregory V" <gregory.v.rose@...el.com>
CC:	"ddutile@...hat.com" <ddutile@...hat.com>,
	"Kirsher, Jeffrey T" <jeffrey.t.kirsher@...el.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	netdev <netdev@...r.kernel.org>, kvm <kvm@...r.kernel.org>,
	"e1000-devel@...ts.sourceforge.net" 
	<e1000-devel@...ts.sourceforge.net>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Yinghai Lu <yinghai@...nel.org>
Subject: RE: SR-IOV problem with Intel 82599EB (not enough MMIO resources
 for SR-IOV)



> -----Original Message-----
> From: Jason Gao [mailto:pkill.2012@...il.com]
> Sent: Tuesday, November 13, 2012 5:38 AM
> To: bhelgaas@...gle.com; Rose, Gregory V; Li, Sibai
> Cc: ddutile@...hat.com; Kirsher, Jeffrey T; linux-kernel; netdev; kvm; e1000-
> devel@...ts.sourceforge.net; linux-pci@...r.kernel.org; Yinghai Lu
> Subject: Re: SR-IOV problem with Intel 82599EB (not enough MMIO resources
> for SR-IOV)
> 
> I'm very sorry for delayed reply.now SR-IOV works for me in Centos 6.3,thank all
> of you.
> 
> 
> On Fri, Nov 9, 2012 at 11:26 PM, Bjorn Helgaas <bhelgaas@...gle.com> wrote:
> > Linux normally uses the resource assignments done by the BIOS, but it
> > is possible for the kernel to reassign those.  We don't have good
> > automatic support for that yet, but on a recent upstream kernel, you
> > can try "pci=realloc".  I doubt this option is in CentOS 6.3, though
> 
> Thank you very much,I try "pci=realloc" in Centos 6.3,and now it works for me.
> 
> 
> 
> On Sat, Nov 10, 2012 at 2:08 AM, Li, Sibai <sibai.li@...el.com> wrote:
> > DellR710 with the latest BIOS should work fine for SR-IOV. My BIOS is
> > v.6.3.0 and release date is 07/24/2012 Please check if you configured
> intel_iommu=on in the grub.conf file.
> > If you did, check your kernel .config file under Device Drivers-> IOMMU
> Hardware support->enable Support for Intel IOMMU using DMA remapping
> Devices, enable Intel DMA Remapping Devices by Default, enable Support for
> Interrupt Remapping.
> 
> thank you Sibai,Our server "Dell R710",its BIOS version is just
> v.6.3.0 and release date is 07/24/2012,and I also configured intel_iommu=on in
> the grub.conf file,but I can't find these IOMMU options in "Device Drivers" in my
> kernel(2.6.32-279) .config file , btw my os is Centos 6.3(RHEL6.3),although the
> problem solved,I'd like to know what's your os version ,kernel version?

I am using RHEL6.3 with unstable kernel 3.7.0-rc
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