On Sat, 12 Nov 2016 06:18:08 +0300 Имя Фамилия <v...@list.ru> wrote:
> I'm trying to get GPU passthrough to work, but haven't gotten very far. I'm > losing my mind trying to figure out what could be the problem. I'm working > with a 5820k and an ASUS X99-A II, both of which support IOMMU. I enabled > VT-d in the UEFI settings and added intel_iommu=on to GRUB. > > I restart, and when I cat /proc/cmdline I can see the option is there there > but it had no effect. There's nothing under /sys/kernel/iommu_groups, there > is no iommu_group folder under /sys/bus/pci/devices/MYBUS/, and when I grep > dmesg I get a generic "DMAR: IOMMU enabled" messages and a warning that I > don't have AMD IOMMUv2 functionality but that's it. > > dmesg contents: http://ptpb.pw/ZpcL > > Any ideas what I'm missing? Time to look for a BIOS update. These are the ACPI tables provided by your motherboard firmware: [ 0.000000] ACPI: RSDP 0x00000000BB258000 000024 (v02 ALASKA) [ 0.000000] ACPI: XSDT 0x00000000BB258090 00009C (v01 ALASKA A M I 01072009 AMI 00010013) [ 0.000000] ACPI: FACP 0x00000000BB28E828 00010C (v05 ALASKA A M I 01072009 AMI 00010013) [ 0.000000] ACPI: DSDT 0x00000000BB2581C8 03665C (v02 ALASKA A M I 01072009 INTL 20091013) [ 0.000000] ACPI: FACS 0x00000000BD4A5F80 000040 [ 0.000000] ACPI: APIC 0x00000000BB28E938 000100 (v03 ALASKA A M I 01072009 AMI 00010013) [ 0.000000] ACPI: FPDT 0x00000000BB28EA38 000044 (v01 ALASKA A M I 01072009 AMI 00010013) [ 0.000000] ACPI: FIDT 0x00000000BB28EA80 00009C (v01 ALASKA A M I 01072009 AMI 00010013) [ 0.000000] ACPI: MCFG 0x00000000BB28EB20 00003C (v01 ALASKA A M I 01072009 MSFT 00000097) [ 0.000000] ACPI: ASF! 0x00000000BB2A5400 0000A0 (v32 INTEL HCG 00000001 TFSM 000F4240) [ 0.000000] ACPI: SSDT 0x00000000BB28EBB8 00036D (v01 SataRe SataTabl 00001000 INTL 20120913) [ 0.000000] ACPI: UEFI 0x00000000BB28EF28 000042 (v01 ALASKA A M I 01072009 00000000) [ 0.000000] ACPI: HPET 0x00000000BB28EF70 000038 (v01 ALASKA A M I 00000001 INTL 20091013) [ 0.000000] ACPI: MSCT 0x00000000BB28EFA8 000090 (v01 ALASKA A M I 00000001 INTL 20091013) [ 0.000000] ACPI: SLIT 0x00000000BB28F038 00002D (v01 ALASKA A M I 00000001 INTL 20091013) [ 0.000000] ACPI: SRAT 0x00000000BB28F068 001158 (v03 ALASKA A M I 00000001 INTL 20091013) [ 0.000000] ACPI: WDDT 0x00000000BB2901C0 000040 (v01 ALASKA A M I 00000000 INTL 20091013) [ 0.000000] ACPI: SSDT 0x00000000BB290200 0151C1 (v02 ALASKA PmMgt 00000001 INTL 20120913) [ 0.000000] ACPI: BGRT 0x00000000BB2A53C8 000038 (v01 ALASKA A M I 01072009 AMI 00010013) The problem is that there's no DMAR table. DMAR describes the VT-d configuration and is required to enable intel_iommu. If you have a VT-d setting in the BIOS enabled, you might try saving and exiting the BIOS, then doing a cold power cycle to make it take effect. Otherwise look for a BIOS update, contact Asus, or return it. Regarding the "IOMMU enabled" line in dmesg: http://vfio.blogspot.com/2016/09/intel-iommu-enabled-it-doesnt-mean-what.html Good luck, Alex _______________________________________________ vfio-users mailing list vfio-users@redhat.com https://www.redhat.com/mailman/listinfo/vfio-users
