Hi Lee, In following link you said about BIOS settings to eliminate RMRRs.
http://dpdk.org/ml/archives/dev/2015-March/015504.html 2) If your application requires the IOMMU, there are BIOS parameters that can be configured to eliminate the RMRRs on a slot-by-slot basis. (I will send instructions for this separately, since it is not a DPDK issue.) Please send the details for the above configuration. PFA screen shot for the Gen8 server version details. Thanks in advance. -----Original Message----- From: Gonzalez Monroy, Sergio [mailto:sergio.gonzalez.mon...@intel.com] Sent: Friday, July 24, 2015 2:47 PM To: Rapelly, Varun Cc: dev at dpdk.org Subject: Re: [dpdk-dev] iommu Error on DL380 G8 with RHEL 7.1 On 24/07/2015 09:54, Rapelly, Varun wrote: > Hi All, > > I'm not able to send packets through OVS bridge [with dpdk] when iommu is > enabled on HP DL380 G8 [RHEL 7.1]. Getting following errors in dmesg. > > [ 0.657681] IOMMU: Setting identity map for device 0000:01:00.2 > [0xbdff6000 - 0xbdffcfff] > [ 0.657686] IOMMU: Prepare 0-16MiB unity mapping for LPC > [ 4458.091522] dmar: DMAR:[DMA Read] Request device [0a:00.0] fault > addr 1a633d000 DMAR:[fault reason 06] PTE Read access is not set [ > 4458.164541] dmar: DMAR:[DMA Read] Request device [0a:00.0] fault addr > 1a633d000 DMAR:[fault reason 06] PTE Read access is not set [ > 4458.337565] dmar: DMAR:[DMA Read] Request device [0a:00.1] fault addr > 1a63cd000 DMAR:[fault reason 06] PTE Read access is not set [ > 4458.637356] dmar: DMAR:[DMA Read] Request device [0a:00.0] fault addr > 1a637d000 DMAR:[fault reason 06] PTE Read access is not set > > Where as in another machine ProLiant DL380 G7 [RHEL 7.1] everything works > fine. Is it something do with the hardware on Gen8 machine? > > The following link shows the similar problem. > > http://comments.gmane.org/gmane.comp.networking.dpdk.devel/2281 > > In the below HP link, they quoted the same problem. I upgraded ROM to > the latest version, but no luck. :( > > http://h20564.www2.hp.com/hpsc/doc/public/display?docId=emr_na-c033238 > 00 > > > > We need this flag to be enabled [SR-IOV] on that machine. > > > > Please let me know, is there any way to resolve this issue? > > Regards, > Varun > Hi Varun, As I replied in you previous post, the issue is most likely related to HP. You need to contact HP for a solution to your issues as suggested in the following thread by Lee A. Roberts from HP: http://dpdk.org/ml/archives/dev/2015-March/015504.html Sergio -------------- next part -------------- A non-text attachment was scrubbed... Name: iommu_Gen8_version.png Type: image/png Size: 114600 bytes Desc: iommu_Gen8_version.png URL: <http://dpdk.org/ml/archives/dev/attachments/20150724/62a027af/attachment-0001.png>
