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[Xen-users] xl pci-detach failure when using SR-IOV NIC
Hi, I've come across a need to hotplug PCI devices between dom0 and domU using SR-IOV NIC. But I'm experiencing problems when trying to detach VF more than one PV guests. I can attach VF to DomU successful as follow: # xl pci-assignable-list
0000:05:10.0
0000:05:10.2
# xl pci-attach 1 05:10.0
# xl pci-attach 2 05:10.2 It seems that everything is working fine and it can work well in DomU. But when I detach VF it report errors as follow: # xl pci-detach 2 05:10.2
libxl: error: libxl_device.c:1269:libxl__wait_for_backend: Backend /local/domain/0/backend/pci/2/0 not ready Each guest config is the same like this: name = "ubuntu-pv-1"
bootloader = "pygrub"
memory = 256
vcpus = 1
vif = [ 'bridge=xenbr0' ]
disk = [ 'file:/home/ye/ubuntu-pv/ubuntu-pv-1/ubuntu-pv-1.img,xvda,rw' ]
pci_permissive = 1 Xen 4.9.1
(XEN) Xen version 4.9.1 (ye@) (gcc (GCC) 4.8.5 20150623 (Red Hat 4.8.5-28)) debug=n Mon Jun 4 11:34:35 CST 2018
(XEN) Latest ChangeSet:
(XEN) Bootloader: GRUB 2.02~beta2
(XEN) Command line: placeholder dom0_mem=2048M,max:2048M dom0_max_vcpus=4 iommu=dom0-passthrough
(XEN) Xen image load base address: 0
(XEN) Video information:
(XEN) VGA is text mode 80x25, font 8x16
(XEN) VBE/DDC methods: none; EDID transfer time: 0 seconds
(XEN) EDID info not retrieved because no DDC retrieval method detected
(XEN) Disc information:
(XEN) Found 1 MBR signatures
(XEN) Found 4 EDD information structures
(XEN) Xen-e820 RAM map:
(XEN) 0000000000000000 - 000000000009c000 (usable)
(XEN) 000000000009c000 - 00000000000a0000 (reserved)
(XEN) 00000000000e0000 - 0000000000100000 (reserved)
(XEN) 0000000000100000 - 000000007a289000 (usable)
(XEN) 000000007a289000 - 000000007af0b000 (reserved)
(XEN) 000000007af0b000 - 000000007b93b000 (ACPI NVS)
(XEN) 000000007b93b000 - 000000007bab7000 (ACPI data)
(XEN) 000000007bab7000 - 000000007bae9000 (usable)
(XEN) 000000007bae9000 - 000000007baff000 (ACPI data)
(XEN) 000000007baff000 - 000000007bb00000 (usable)
(XEN) 000000007bb00000 - 0000000090000000 (reserved)
(XEN) 00000000feda8000 - 00000000fedac000 (reserved)
(XEN) 00000000ff310000 - 0000000100000000 (reserved)
(XEN) 0000000100000000 - 0000000880000000 (usable)
(XEN) New Xen image base address: 0x79c00000
(XEN) ACPI: RSDP 000FE320, 0024 (r2 DELL )
(XEN) ACPI: XSDT 7BAB50E8, 00BC (r1 DELL PE_SC3 0 1000013)
(XEN) ACPI: FACP 7BAB1000, 00F4 (r4 DELL PE_SC3 0 DELL 1)
(XEN) ACPI: DSDT 7BA99000, 10768 (r2 DELL PE_SC3 3 DELL 1)
(XEN) ACPI: FACS 7B8E3000, 0040
(XEN) ACPI: MCEJ 7BAB4000, 0130 (r1 INTEL 1 INTL 100000D)
(XEN) ACPI: WD__ 7BAB3000, 0134 (r1 DELL PE_SC3 1 DELL 1)
(XEN) ACPI: SLIC 7BAB2000, 0024 (r1 DELL PE_SC3 1 DELL 1)
(XEN) ACPI: HPET 7BAB0000, 0038 (r1 DELL PE_SC3 1 DELL 1)
(XEN) ACPI: APIC 7BAAF000, 0AFC (r2 DELL PE_SC3 0 DELL 1)
(XEN) ACPI: MCFG 7BAAE000, 003C (r1 DELL PE_SC3 1 DELL 1)
(XEN) ACPI: MSCT 7BAAD000, 0090 (r1 DELL PE_SC3 1 DELL 1)
(XEN) ACPI: SLIT 7BAAC000, 006C (r1 DELL PE_SC3 1 DELL 1)
(XEN) ACPI: SRAT 7BAAA000, 1130 (r3 DELL PE_SC3 1 DELL 1)
(XEN) ACPI: SSDT 7B956000, 1424A9 (r2 DELL PE_SC3 4000 INTL 20121114)
(XEN) ACPI: SSDT 7B953000, 217F (r2 DELL PE_SC3 2 INTL 20121114)
(XEN) ACPI: SSDT 7B952000, 006E (r2 DELL PE_SC3 2 INTL 20121114)
(XEN) ACPI: PRAD 7B951000, 0132 (r2 DELL PE_SC3 2 INTL 20121114)
(XEN) ACPI: DMAR 7BAFE000, 0120 (r1 DELL PE_SC3 1 DELL 1)
(XEN) ACPI: HEST 7BAFD000, 017C (r1 DELL PE_SC3 2 DELL 1)
(XEN) ACPI: BERT 7BAFC000, 0030 (r1 DELL PE_SC3 2 DELL 1)
(XEN) ACPI: ERST 7BAFB000, 0230 (r1 DELL PE_SC3 2 DELL 1)
(XEN) ACPI: EINJ 7BAFA000, 0150 (r1 DELL PE_SC3 2 DELL 1)
(XEN) System RAM: 32674MB (33458528kB)
(XEN) SRAT: Node 1 has no memory. BIOS Bug or mis-configured hardware?
(XEN) Domain heap initialised DMA width 32 bits
(XEN) ACPI: 32/64X FACS address mismatch in FADT - 7b8e3000/0000000000000000, using 32
(XEN) IOAPIC[0]: apic_id 8, version 32, address 0xfec00000, GSI 0-23
(XEN) IOAPIC[1]: apic_id 9, version 32, address 0xfec01000, GSI 24-47
(XEN) IOAPIC[2]: apic_id 10, version 32, address 0xfec40000, GSI 48-71
(XEN) Enabling APIC mode: Phys. Using 3 I/O APICs
(XEN) Not enabling x2APIC (upon firmware request)
(XEN) xstate: size: 0x340 and states: 0x7
(XEN) Using scheduler: SMP Credit Scheduler (credit)
(XEN) Platform timer is 14.318MHz HPET
(XEN) Detected 2200.002 MHz processor.
(XEN) Initing memory sharing.
(XEN) Intel VT-d iommu 0 supported page sizes: 4kB, 2MB, 1GB.
(XEN) Intel VT-d iommu 1 supported page sizes: 4kB, 2MB, 1GB.
(XEN) Intel VT-d Snoop Control enabled.
(XEN) Intel VT-d Dom0 DMA Passthrough enabled.
(XEN) Intel VT-d Queued Invalidation enabled.
(XEN) Intel VT-d Interrupt Remapping enabled.
(XEN) Intel VT-d Posted Interrupt not enabled.
(XEN) Intel VT-d Shared EPT tables enabled.
(XEN) I/O virtualisation enabled
(XEN) - Dom0 mode: Passthrough
(XEN) Interrupt remapping enabled
(XEN) Enabled directed EOI with ioapic_ack_old on!
(XEN) ENABLING IO-APIC IRQs
(XEN) -> Using old ACK method
(XEN) Allocated console ring of 128 KiB.
(XEN) VMX: Supported advanced features:
(XEN) - APIC MMIO access virtualisation
(XEN) - APIC TPR shadow
(XEN) - Extended Page Tables (EPT)
(XEN) - Virtual-Processor Identifiers (VPID)
(XEN) - Virtual NMI
(XEN) - MSR direct-access bitmap
(XEN) - Unrestricted Guest
(XEN) - APIC Register Virtualization
(XEN) - Virtual Interrupt Delivery
(XEN) - Posted Interrupt Processing
(XEN) - VMCS shadowing
(XEN) - VM Functions
(XEN) - Virtualisation Exceptions
(XEN) - Page Modification Logging
(XEN) HVM: ASIDs enabled.
(XEN) HVM: VMX enabled
(XEN) HVM: Hardware Assisted Paging (HAP) detected
(XEN) HVM: HAP page sizes: 4kB, 2MB, 1GB
(XEN) Brought up 40 CPUs
(XEN) Dom0 has maximum 840 PIRQs
(XEN) *** LOADING DOMAIN 0 ***
(XEN) Xen kernel: 64-bit, lsb, compat32
(XEN) Dom0 kernel: 64-bit, PAE, lsb, paddr 0x1000000 -> 0x2078000
(XEN) PHYSICAL MEMORY ARRANGEMENT:
(XEN) Dom0 alloc.: 0000000860000000->0000000864000000 (502576 pages to be allocated)
(XEN) Init. ramdisk: 000000087eb30000->000000087ffff057
(XEN) VIRTUAL MEMORY ARRANGEMENT:
(XEN) Loaded kernel: ffffffff81000000->ffffffff82078000
(XEN) Init. ramdisk: 0000000000000000->0000000000000000
(XEN) Phys-Mach map: 0000008000000000->0000008000400000
(XEN) Start info: ffffffff82078000->ffffffff820784b4
(XEN) Page tables: ffffffff82079000->ffffffff8208e000
(XEN) Boot stack: ffffffff8208e000->ffffffff8208f000
(XEN) TOTAL: ffffffff80000000->ffffffff82400000
(XEN) ENTRY ADDRESS: ffffffff81c051f0
(XEN) Dom0 has maximum 4 VCPUs
(XEN) Scrubbing Free RAM on 2 nodes using 10 CPUs
(XEN) ............................done.
(XEN) Initial low memory virq threshold set at 0x4000 pages.
(XEN) Std. Loglevel: Errors and warnings
(XEN) Guest Loglevel: Nothing (Rate-limited: Errors and warnings)
(XEN) Xen is relinquishing VGA console.
(XEN) *** Serial input -> DOM0 (type 'CTRL-a' three times to switch input to Xen)
(XEN) Freed 440kB init memory
(XEN) deassign 0000:05:10.2 from dom2 failed (-19) And libxl-driver log: # cat /var/log/libvirt/libxl/libxl-driver.log
xc: detail: sysctl operation failed -- need to rebuild the user-space tool set?
libxl: error: libxl.c:4364:libxl_get_physinfo: getting physinfo: Permission denied
xc: debug: hypercall buffer: total allocations:7 total releases:7
xc: debug: hypercall buffer: current allocations:0 maximum allocations:1
xc: debug: hypercall buffer: cache current size:1
xc: debug: hypercall buffer: cache hits:6 misses:1 toobig:0 I'm running in Ubuntu 14 using Xen-4.9. I have tested in other machine using the same environment but encountering the same problem.
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