diff options
Diffstat (limited to 'results/classifier/105/semantic/2953')
| -rw-r--r-- | results/classifier/105/semantic/2953 | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/results/classifier/105/semantic/2953 b/results/classifier/105/semantic/2953 new file mode 100644 index 000000000..4c1ae6fb4 --- /dev/null +++ b/results/classifier/105/semantic/2953 @@ -0,0 +1,79 @@ +semantic: 0.851 +graphic: 0.837 +KVM: 0.826 +device: 0.821 +vnc: 0.794 +other: 0.784 +assembly: 0.770 +instruction: 0.743 +boot: 0.693 +mistranslation: 0.682 +network: 0.670 +socket: 0.480 + +"DMAR: DRHD: handling fault status reg 2" with vfio on kernel 6.13.11-200.fc41.x86_64, works with 6.13.9-200.fc41.x86_64 +Description of problem: +Since kernel 6.13.11-200.fc41.x86_64, I cannot use VFIO to pass an NVIDIA GeForce GTX 1070 card to a Windows guest. The same setup works just fine in 6.13.9-200.fc41.x86_64. The issue symptoms are the same regardless if I use kernel command line arguments to isolate cpus or not. + +Symptoms: +- qemu logs show: +``` +2025-05-07T09:59:49.957891Z qemu-system-x86_64: vfio: Cannot reset device 0000:36:00.1, no available reset mechanism. +2025-05-07T09:59:49.958444Z qemu-system-x86_64: vfio: Cannot reset device 0000:36:00.0, no available reset mechanism. +2025-05-07T09:59:49.959119Z qemu-system-x86_64: vfio: Cannot reset device 0000:36:00.1, no available reset mechanism. +2025-05-07T09:59:49.959635Z qemu-system-x86_64: vfio: Cannot reset device 0000:36:00.0, no available reset mechanism. +``` +- in dmesg I see: +``` +kernel: DMAR: DRHD: handling fault status reg 2 +kernel: DMAR: [INTR-REMAP] Request device [36:00.0] fault index 0x50 [fault reason 0x22] Present field in the IRTE entry is clear +``` +- the VM hangs at boot (please see the notes below (*)). +Steps to reproduce: +Boot the same libvirt domain in kernel 6.13.9-200.fc41.x86_64 (works) and any other more recent kernel (>= 6.13.11-200.fc41.x86_64). +Additional information: +(*) Note that in a working kernel, the boot process is in any case finicky, and it shows these phases: +1. tianocore logo shows, and one single cpu is fully utilized by the guest +2. slowly, the loader find the Windows bootloader, and prints a message that it is loading and running it +3. some time passes, while cpus seem idle +4. finally the spinning wheel of the Windows bootloader appears + +Phase 1-3 can take anywhere from 0 to 60 seconds, in an apparently random manner. + +When running on the faulty kernels, it seems that the virtual machine gets stuck in phase 1, and I must use `virsh destroy` to interrupt it. + +lspci output: +``` +-[0000:00]-+-00.0 Intel Corporation Tiger Lake-UP3/H35 4 cores Host Bridge/DRAM Registers + +-02.0 Intel Corporation TigerLake-LP GT2 [Iris Xe Graphics] + +-04.0 Intel Corporation TigerLake-LP Dynamic Tuning Processor Participant + +-06.0-[01]----00.0 Samsung Electronics Co Ltd NVMe SSD Controller SM981/PM981/PM983 + +-07.0-[02-33]-- + +-0a.0 Intel Corporation Tigerlake Telemetry Aggregator Driver + +-0d.0 Intel Corporation Tiger Lake-LP Thunderbolt 4 USB Controller + +-0d.2 Intel Corporation Tiger Lake-LP Thunderbolt 4 NHI #0 + +-14.0 Intel Corporation Tiger Lake-LP USB 3.2 Gen 2x1 xHCI Host Controller + +-14.2 Intel Corporation Tiger Lake-LP Shared SRAM + +-15.0 Intel Corporation Tiger Lake-LP Serial IO I2C Controller #0 + +-15.1 Intel Corporation Tiger Lake-LP Serial IO I2C Controller #1 + +-15.2 Intel Corporation Tiger Lake-LP Serial IO I2C Controller #2 + +-16.0 Intel Corporation Tiger Lake-LP Management Engine Interface + +-1c.0-[34]----00.0 Intel Corporation Wi-Fi 6 AX200 + +-1c.5-[35]----00.0 Realtek Semiconductor Co., Ltd. RTS522A PCI Express Card Reader + +-1d.0-[36]--+-00.0 NVIDIA Corporation GP104 [GeForce GTX 1070] + | \-00.1 NVIDIA Corporation GP104 High Definition Audio Controller + +-1f.0 Intel Corporation Tiger Lake-LP LPC Controller + +-1f.3 Intel Corporation Tiger Lake-LP Smart Sound Technology Audio Controller + +-1f.4 Intel Corporation Tiger Lake-LP SMBus Controller + \-1f.5 Intel Corporation Tiger Lake-LP SPI Controller +``` + +kernel command line arguments (optimized with cpu isolation): +``` +intel_pstate=per_cpu_perf_limits rd.driver.blacklist=nouveau modprobe.blacklist=nouveau module_blacklist=nouveau default_hugepagesz=1G hugepagesz=1G hugepages=13 i2c_i801.disable_features=0x10 rd.driver.pre=vfio_pci,vfio,vfio_iommu_type1 vfio-pci.ids=10de:1b81,10de:10f0 modprobe.blacklist=xpad systemd.unit=multi-user.target systemd.wants=bluetooth.service isolcpus=domain,managed_irq,1-3,5-7 rcu_nocbs=1-3,5-7 irqaffinity=0,4 nospectre_v2 +``` + +kernel command line arguments (without cpu isolation, same symptoms): +``` +intel_pstate=per_cpu_perf_limits rd.driver.blacklist=nouveau modprobe.blacklist=nouveau module_blacklist=nouveau default_hugepagesz=1G hugepagesz=1G hugepages=13 rd.driver.pre=vfio_pci,vfio,vfio_iommu_type1 vfio-pci.ids=10de:1b81,10de:10f0 modprobe.blacklist=xpad systemd.unit=multi-user.target systemd.wants=bluetooth.service +``` |