IOMMU Group 12 00:08.0 System peripheral [0880]: Intel Corporation Sky Lake-E Ubox Registers [8086:2014] (rev 07) IOMMU Group 13 00:08.1 Performance counters [1101]: Intel Corporation Sky Lake-E Ubox Registers [8086:2015] (rev 07) IOMMU Group 14 00:08.2 System peripheral [0880]: Intel...
In order to do that, I first enabled the IOMMU support in the BIOS/UEFI. After that, I booted into Proxmox and checked whether IOMMU is detected. It spitted out the following output [ 1.332679] pci 0000:00:00.2: AMD-Vi: IOMMU performance counters supported [ 1.344441] pci 0000:00:00.2...
Aug 03 21:01:03 hill kernel: AMD-Vi: IOMMU performance counters supported Aug 03 21:01:03 hill kernel: iommu: Adding device 0000:0a:00.0 to group 17 Aug 03 21:01:03 hill kernel: AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40Aug 03 21:01:03 hill kernel: AMD-Vi: Extended ...
[ 3.712029] iommu: Default domain type: Passthrough [ 6.736019] pci 0000:00:00.2: IOMMU performance counters supported ... [ 6.780040] pci 0000:e0:00.2: IOMMU performance counters supported [ 6.786740] pci 0000:00:01.0: Adding to iommu group 0 [ 6.791876] pci 0000:00:01.1: Adding to iomm...
假设我们通过iommu提供设备的DMA能力,当发起dma_map的时候,设备设置了streamid, 但是多个设备的streamid有可能是一样的。 那么这时候修改其中一个设备的页表体系,就影响了相同streamid的其他设备。 所以,修改页表的最小单位不是设备,而是streamid。这个streamid大家可能觉得比较抽象,先知道这个是用来索引的就行。
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Performance counters [1101]: Intel Corporation Xeon E5/Core i7 Ring to PCI Express Performance Monitor [8086:3c43] (rev 07) 7f:13.4 Performance counters [1101]: Intel Corporation Xeon E5/Core i7 QuickPath Interconnect Agent Ring Registers [8086:3ce6] (rev 07) 7f:13.5 Performance counters [...
Hardware Performance Monitor Up to 31 programmable event counters. Implemented Memory-Resident Interrupt Files (MRIF) support Atomics updates not supported. The Notice MSI is generated by the IOMMU and sent through the data structures interface. Implemented Debug Register Interface Reuses IOMMU translation...
Aug 03 21:01:03 hill kernel: AMD-Vi: IOMMU performance counters supported Aug 03 21:01:03 hill kernel: iommu: Adding device 0000:0a:00.0 to group 17 Aug 03 21:01:03 hill kernel: AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40Aug 03 21:01:03 hill kernel: AMD-Vi: Extended...
Aug 03 21:01:03 hill kernel: AMD-Vi: IOMMU performance counters supported Aug 03 21:01:03 hill kernel: iommu: Adding device 0000:0a:00.0 to group 17 Aug 03 21:01:03 hill kernel: AMD-Vi: Found IOMMU at 0000:00:00.2 cap 0x40Aug 03 21:01:03 hill kernel: AMD-V...