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DaggyStyle
Watchman
Joined: 22 Mar 2006
Posts: 5924
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 Posted: Fri Aug 23, 2024 5:59 pm Post subject: anyone has any experience with the acso patch? [solved] |
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Greetings,
I'm trying to split a specific device from it's iommu group using the asco patch.
I've compiled it against kernel 6.6.47 and booted. here is what dmesg says:
| Code: | # dmesg | grep -i acs
[ 0.000000] Command line: BOOT_IMAGE=/vmlinuz-lts root=UUID=50eabd59-625c-4968-a492-86acf3ddde84 ro modules=sd-mod,usb-storage,ext4 quiet rootfstype=ext4 iommu=pt intel_iommu=on pcie_acs_override=id:8086:293e
[ 0.000000] Warning: PCIe ACS overrides enabled; This may allow non-IOMMU protected peer-to-peer DMA
[ 0.003355] ACPI: FACS 0x000000007FBDD000 000040
[ 0.003379] ACPI: Reserving FACS table memory at [mem 0x7fbdd000-0x7fbdd03f]
[ 0.116109] Kernel command line: BOOT_IMAGE=/vmlinuz-lts root=UUID=50eabd59-625c-4968-a492-86acf3ddde84 ro modules=sd-mod,usb-storage,ext4 quiet rootfstype=ext4 iommu=pt intel_iommu=on pcie_acs_override=id:8086:293e |
and here is iommu layout:
| Code: | # bash /media/usb/iommu.sh
Group 0: [8086:29c0] 00:00.0 Host bridge 82G33/G31/P35/P31 Express DRAM Controller
Group 1: [1b36:000c] 00:01.0 PCI bridge QEMU PCIe Root port
Group 2: [1b36:000c] 00:01.1 PCI bridge QEMU PCIe Root port
Group 3: [1b36:000c] 00:01.2 PCI bridge QEMU PCIe Root port
Group 4: [1b36:000c] 00:01.3 PCI bridge QEMU PCIe Root port
Group 5: [1b36:000c] 00:01.4 PCI bridge QEMU PCIe Root port
Group 6: [1b36:000c] 00:01.5 PCI bridge QEMU PCIe Root port
Group 7: [1b36:000c] 00:01.6 PCI bridge QEMU PCIe Root port
Group 8: [1b36:000c] 00:01.7 PCI bridge QEMU PCIe Root port
Group 9: [1234:1111] 00:02.0 VGA compatible controller Device 1111
Group 10: [1b36:000c] 00:03.0 PCI bridge QEMU PCIe Root port
Group 11: [1b36:000c] 00:03.1 PCI bridge QEMU PCIe Root port
Group 12: [1b36:000c] 00:03.2 PCI bridge QEMU PCIe Root port
Group 13: [1b36:000c] 00:03.3 PCI bridge QEMU PCIe Root port
Group 14: [1b36:000c] 00:03.4 PCI bridge QEMU PCIe Root port
Group 15: [1b36:000c] 00:03.5 PCI bridge QEMU PCIe Root port
Group 16: [1b36:000c] 00:03.6 PCI bridge QEMU PCIe Root port
Group 17: [1b36:000d] 00:14.0 USB controller QEMU XHCI Host Controller
USB: [46f4:0001] Bus 002 Device 003
USB: [1d6b:0002] Bus 001 Device 001
USB: [0627:0001] Bus 001 Device 002
USB: [46f4:0001] Bus 002 Device 002
USB: [1d6b:0003] Bus 002 Device 001
USB: [46f4:0001] Bus 002 Device 003
USB: [1d6b:0002] Bus 001 Device 001
USB: [0627:0001] Bus 001 Device 002
USB: [46f4:0001] Bus 002 Device 002
USB: [1d6b:0003] Bus 002 Device 001
Group 18: [8086:2918] 00:1f.0 ISA bridge 82801IB (ICH9) LPC Interface Controller
[8086:2922] 00:1f.2 SATA controller 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode]
[8086:2930] 00:1f.3 SMBus 82801I (ICH9 Family) SMBus Controller
[8086:293e] 00:1f.4 Audio device 82801I (ICH9 Family) HD Audio Controller
Group 19: [8086:10c9] [R] 00:1f.6 Ethernet controller 82576 Gigabit Network Connection
Group 20: [8086:100e] [R] 01:00.0 Ethernet controller 82540EM Gigabit Ethernet Controller
Group 21: [8086:100e] [R] 02:00.0 Ethernet controller 82540EM Gigabit Ethernet Controller
Group 22: [8086:100e] [R] 03:00.0 Ethernet controller 82540EM Gigabit Ethernet Controller
Group 23: [1af4:1045] [R] 04:00.0 Unclassified device [00ff] Virtio 1.0 memory balloon
Group 24: [8086:100e] [R] 05:00.0 Ethernet controller 82540EM Gigabit Ethernet Controller
Group 25: [1af4:1044] [R] 06:00.0 Unclassified device [00ff] Virtio 1.0 RNG
Group 26: [1af4:1043] [R] 07:00.0 Communication controller Virtio 1.0 console
Group 27: [1b36:000e] [R] 08:00.0 PCI bridge Device 000e
[10ec:8139] [R] 09:07.0 Ethernet controller RTL-8100/8101L/8139 PCI Fast Ethernet Adapter
Group 28: [8086:2922] [R] 0b:00.0 SATA controller 82801IR/IO/IH (ICH9R/DO/DH) 6 port SATA Controller [AHCI mode]
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8086:293e is the device I want to split and the tree is still the same as before the change.
has anyone being able to use the patch properly to split?
_________________
Only two things are infinite, the universe and human stupidity and I'm not sure about the former - Albert Einstein
Last edited by DaggyStyle on Sat Aug 24, 2024 10:40 am; edited 1 time in total |
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DaggyStyle
Watchman
Joined: 22 Mar 2006
Posts: 5924
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| Posted: Sat Aug 24, 2024 10:40 am Post subject: |
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added prints to the code, looks like all the devices has acs cap, I need to understand how and if it helps me.
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