-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA512 On 2016-08-18 10:19, Foppe de Haan wrote: > I've been slowly figuring out how qubes works, and configuring it the way > I want, while getting used to linux at the same time (which means I'm not > very good at things other than diagnosing and prodding around yet). > > As such, I found out today that IOMMU doesn't appear to be enabled, and > qubes-hcl-report lists it as 'no', even though it "should" be there and > work. The reason why this is the case eludes me, as I am not really seeing > any errors beyond the exceedingly uninformative outcome -- "error > initialization" in xl dmesg. Can anyone help me along on the way to > figuring out why this may be the case? > > My CPU is listed as supporting IOMMU (amd athlon x4 845, carrizo core), my > BIOS has the option enabled, and lspci lists a IOMMU device. > > I've attached a few log files that contain information that googling > around told me may be relevant; I have also searched the qubes-users and > -devel groups, but not really found much, apart from outdated information > (referring to xen 4.3, 4.4, 3.x). > > Thank you in advance. :) > > For reference: what I believe are the most directly relevant bits from the > attached files: > > xl dmesg: (XEN) ACPI: IVRS CC9AD968, 00D0 (r2 AMD BANTRY 1 AMD > 0 (XEN) Enabling APIC mode: Flat. Using 2 I/O APICs ... (XEN) alt table > ffff82d0802c6b30 -> ffff82d0802c7d90 (XEN) PCI: MCFG configuration 0: base > f0000000 segment 0000 buses 00 - 3f (XEN) PCI: MCFG area at f0000000 > reserved in E820 (XEN) PCI: Using MCFG for segment 0000 bus 00-3f (XEN) > AMD-Vi: Error initialization (XEN) I/O virtualisation disabled (XEN) > nr_sockets: 3 (XEN) ENABLING IO-APIC IRQs (XEN) HVM: ASIDs enabled. (XEN) > SVM: Supported advanced features: (XEN) - Nested Page Tables (NPT) (XEN) > - Last Branch Record (LBR) Virtualisation (XEN) - Next-RIP Saved on > #VMEXIT (XEN) - VMCB Clean Bits (XEN) - DecodeAssists (XEN) - > Pause-Intercept Filter (XEN) - TSC Rate MSR (XEN) HVM: SVM enabled (XEN) > HVM: Hardware Assisted Paging (HAP) detected (XEN) HVM: HAP page sizes: > 4kB, 2MB, 1GB (XEN) HVM: PVH mode not supported on this platform > > lscpu: Vendor ID: AuthenticAMD CPU family: 21 > Model: 96 Model name: AMD Athlon(tm) X4 845 Quad Core Processor > Stepping: 1 CPU MHz: 3493.540 BogoMIPS: 6987.08 > Hypervisor vendor: Xen Virtualization type: none > > lspci: 00:00.2 IOMMU: Advanced Micro Devices, Inc. [AMD] Device 1577 > > xlinfo: virt_caps : hvm xen_version : 4.6.1 > xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 hvm-3.0-x86_32p > hvm-3.0-x86_64 xen_scheduler : credit xen_pagesize : > 4096 platform_params : virt_start=0xffff800000000000 xen_changeset : > xen_commandline : loglvl=all dom0_mem=min:1024M dom0_mem=max:4096M >
Just a shot in the dark: In order for IOMMU to work, it has to be supported by the CPU, chipset, and motherboard. According to this previous guide, a common problem faced by many users looking for compatible hardware is that even though their CPU supports VT-d/IOMMU, their chipset does not: https://groups.google.com/d/topic/qubes-users/Sz0Nuhi4N0o/discussion Is it possible that, even though your CPU supports IOMMU, your chipset does not? IIRC, some users have even found that their motherboard does not properly support VT-d/IOMMU, despite the option to enable it being available in the BIOS. - -- Andrew David Wong (Axon) Community Manager, Qubes OS https://www.qubes-os.org -----BEGIN PGP SIGNATURE----- iQIcBAEBCgAGBQJXt1GcAAoJENtN07w5UDAwpbUQAMF/RBTo3SuYdkp4dKV8oWRm NQBdoLRJMQJKgTqn/91HEEEPZAmTJ9w+EtLPtcP9IMJWiooAIHuTeQtTryMAHxhF c7HCQqV1oOkLygNaY656wOGXgdd41vguYGXL1heDtfcwCliUC0Q1SE9tJ0BN+cV6 8xqjMkvF11evhhF0NPvpgGSqQHjgFPactIJ2L0UFnLI/bDa0j6152CF9/iDWsc18 tK05WfVJNCBX/VaM4SrkZoDcwdP5Nr90h1L6tBTN2Xn+1xHGwKt6lzumIjkX9Gtu ykCd5geeM3Bs/OWVu2IJcQlBNXS3w2fdxlIC6OF5KDJkJVifITZViiJth3GRjCyx lgvpe5bO0jREcRGT47WBy1opSxrQhxsZlGgXvowseS/HJeIRiGHkeTqddlqCZLy1 0UNIuvXvWv82iMy/lmQfUHH2SxqjMkWA9RZ4cjQm8Tyq2TkoLxlxN4MVZQ8BEQs1 RXR2mmK+sMAQJnZm4phtVzKze3bHXiJfaykaG4mvlTFtBOU5rkVLpSwGgzzQsVnU 8C4YjFoVOQAuDCn7Ibm4tc6Vw/JDUIaDOKaQHpzCIntTY/ZXt+briiILXV2lGadw tWVFdHUQt7Q9D4isVnUYPDQgsKHdogIpkwl/8STrqpyeZ7o5KbESq2yl13256ygT VNRTy+RgFOTo/aaqrVrk =M+cM -----END PGP SIGNATURE----- -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/a83643c0-f5f7-bb5c-2297-1dd1a10a1906%40qubes-os.org. For more options, visit https://groups.google.com/d/optout.
