Lenovo E495 reports: pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter. pci 0000:00:00.2: can't derive routing for PCI INT A pci 0000:00:00.2: PCI INT A: not connected
I found an existing identical bug report that doesn't seem to have gained any attention: https://bugzilla.kernel.org/show_bug.cgi?id=201753 Linux version 5.11.0-rc4+ (tj@elloe000) (gcc (Ubuntu 9.3.0-17ubuntu1~20.04) 9.3.0, GNU ld (GNU Binutils for Ubuntu) 2.34) #12 SMP PREEMPT Sun Jan 24 11:28:01 GMT 2021 Command line: BOOT_IMAGE=/vmlinuz-5.11.0-rc4+ root=/dev/mapper/ELLOE000-rootfs ro acpi_osi=! "acpi_osi=Windows 2016" systemd.unified_cgroup_hierarchy=1 nosplash ... DMI: LENOVO 20NECTO1WW/20NECTO1WW, BIOS R11ET32W (1.12 ) 12/23/2019 ... AMD-Vi: ivrs, add hid:PNPD0040, uid:, rdevid:152 ... smpboot: CPU0: AMD Ryzen 7 3700U with Radeon Vega Mobile Gfx (family: 0x17, model: 0x18, stepping: 0x1) ... pci 0000:00:00.2: AMD-Vi: Unable to read/write to IOMMU perf counter. pci 0000:00:00.2: can't derive routing for PCI INT A pci 0000:00:00.2: PCI INT A: not connected pci 0000:00:01.0: Adding to iommu group 0 pci 0000:00:01.1: Adding to iommu group 1 pci 0000:00:01.2: Adding to iommu group 2 pci 0000:00:01.3: Adding to iommu group 3 pci 0000:00:01.6: Adding to iommu group 4 pci 0000:00:08.0: Adding to iommu group 5 pci 0000:00:08.1: Adding to iommu group 6 pci 0000:00:14.0: Adding to iommu group 7 pci 0000:00:14.3: Adding to iommu group 7 pci 0000:00:18.0: Adding to iommu group 8 pci 0000:00:18.1: Adding to iommu group 8 pci 0000:00:18.2: Adding to iommu group 8 pci 0000:00:18.3: Adding to iommu group 8 pci 0000:00:18.4: Adding to iommu group 8 pci 0000:00:18.5: Adding to iommu group 8 pci 0000:00:18.6: Adding to iommu group 8 pci 0000:00:18.7: Adding to iommu group 8 pci 0000:01:00.0: Adding to iommu group 9 pci 0000:02:00.0: Adding to iommu group 10 pci 0000:03:00.0: Adding to iommu group 11 pci 0000:04:00.0: Adding to iommu group 12 pci 0000:05:00.0: Adding to iommu group 13 pci 0000:05:00.1: Adding to iommu group 14 pci 0000:05:00.2: Adding to iommu group 14 pci 0000:05:00.3: Adding to iommu group 14 pci 0000:05:00.4: Adding to iommu group 14 pci 0000:05:00.5: Adding to iommu group 14 pci 0000:05:00.6: Adding to iommu group 14 pci 0000:00:00.2: AMD-Vi: Found IOMMU cap 0x40 pci 0000:00:00.2: AMD-Vi: Extended features (0x4f77ef22294ada): PPR NX GT IA GA PC GA_vAPIC AMD-Vi: Interrupt remapping enabled AMD-Vi: Virtual APIC enabled AMD-Vi: Lazy IO/TLB flushing enabled amd_uncore: 4 amd_df counters detected _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
