GPU pass-throucgh kvm in CentOS 6.5

506629361

　　2014年8月8日 发布
　　
Hardware Environment
　　1. CPU: 1.Intel(R) Xeon(R) CPU E5-2620 v2 @ 2.10GHz
　　2. Motherboard: Dell Inc OX3D66
　　3. Kernel: linux-3.14.3(IOMMU, IPv4 net, IPv6 net, KVM audit...)
　　4. Graphic Card:

　　-NVIDIA for host booting

　　-FirePro W9000 for VM

　　
　　5. KVM: latest version
　　
Assign PCI devices to VM in KVM
　　Reference:

　　http://doc.opensuse.org/products/draft/SLES/SLES-kvm_sd_draft/cha.qemu.running.html

　　http://www.linux-kvm.org/page/How_to_assign_devices_with_VT-d_in_KVM

　　https://docs.google.com/document/d/1ef_nfl652L0HLn_wGvnpgjsBJd9LZzaV_-rIcEEoK8Y/edit

　　1. Modifying kernel config:

　　-Download linux kernel source

　　-make menuconfig

　　-Enable Bus options(In kernel version 3.x, Device Driver Options)

　　-"Support for DMA Remapping Devices" to "*“

　　-"Enable DMA Remapping Devices" to "*“

　　-"PCI Stub driver" to "*”

　　-"Support for Interrupt Remapping" to "*“

　　-make modules_install

　　2. VT-d enabled in boot option&nbsp
　　3. Modify vi /etc/default/grub에서 커널 라인에 intel_iommu=on추가
　　4. reboot
　　5. check IOMMU
　　dmsg | grep -e DMAR -e IOMMU
　　[ 0.000000] ACPI: DMAR bd3346f4 000158 (v01 DELL PE_SC3 00000001 DELL 00000001)
　　[ 0.000000] Intel-IOMMU: enabled
　　[ 3.217724] dmar: IOMMU 0: reg_base_addr d5000000 ver 1:0 cap d2078c106f0466 ecap f020de
　　[ 3.217735] dmar: IOMMU 1: reg_base_addr df900000 ver 1:0 cap d2078c106f0466 ecap f020de
　　[ 3.217966] IOMMU 0 0xd5000000: using Queued invalidation
　　[ 3.217972] IOMMU 1 0xdf900000: using Queued invalidation
　　[ 3.217981] IOMMU: Setting RMRR:
　　[ 3.217994] IOMMU: Setting identity map for device 0000:00:1d.0 [0xbf452000 - 0xbf452fff]
　　[ 3.218036] IOMMU: Setting identity map for device 0000:00:1a.0 [0xbf450000 - 0xbf450fff]
　　[ 3.218061] IOMMU: Setting identity map for device 0000:00:1a.0 [0xbf458000 - 0xbf46ffff]
　　[ 3.218067] IOMMU: Setting identity map for device 0000:00:1d.0 [0xbf458000 - 0xbf46ffff]
　　[ 3.218073] IOMMU: Prepare 0-16MiB unity mapping for LPC
　　[ 3.218084] IOMMU: Setting identity map for device 0000:00:1f.0 [0x0 - 0xffffff]