Yes it is AMD system, however KVM website does mention AMD iommu support KVM device passthrough. I want to make sure my system has this capability. Regards Eric ---------------------------------------- > Date: Sat, 4 Apr 2009 21:18:23 +0300 > From: muli@xxxxxxxxxx > To: ericliu2008@xxxxxxxxxxx > CC: kvm@xxxxxxxxxxxxxxx > Subject: Re: IOMMU setting > > On Sat, Apr 04, 2009 at 12:16:50AM +0000, Eric Liu wrote: >> >> Is there a quick way to check if system has IOMMU enabled in Linux? >> >> I saw the following messages in /var/log/messages: >> >> Apr 3 21:03:16 kernel: PCI-DMA: Disabling AGP. >> Apr 3 21:03:16 kernel: PCI-DMA: aperture base @ f4000000 size 65536 KB >> Apr 3 21:03:16 kernel: init_memory_mapping: 00000000f4000000-00000000f8000000 >> Apr 3 21:03:16 kernel: last_map_addr: f8000000 end: f8000000 >> Apr 3 21:03:16 kernel: PCI-DMA: using GART IOMMU. >> Apr 3 21:03:16 kernel: PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture >> >> Does this mean IOMMU is enabed? And i don't need anything like >> iommu=force in boot option, right? > > It means that you are running on an AMD system, and that this system > has a GART. You need an isolation-capable IOMMU such as Intel's VT-d > for KVM in-tree device passthrough. > > Cheers, > Muli > -- > Muli Ben-Yehuda | muli@xxxxxxxxxx | +972-4-8281080 > Manager, Virtualization and Systems Architecture > Master Inventor, IBM Haifa Research Laboratory > > SYSTOR 2009---The Israeli Experimental Systems Conference > http://www.haifa.il.ibm.com/conferences/systor2009/ _________________________________________________________________ Rediscover Hotmail®: Get quick friend updates right in your inbox. http://windowslive.com/RediscoverHotmail?ocid=TXT_TAGLM_WL_HM_Rediscover_Updates1_042009-- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
