Guests wont start with 15 pcie-root-port devices
In 6.1, a guest with 15 empty pcie-root-port devices will not boot
properly - it just hangs on "Guest has not initialized the display
(yet).". As soon as I remove the last pcie-root-port, the guest begins
starting up normally. My qemu command line:
/usr/libexec/qemu-kvm -name guest=xxx,debug-threads=on -S -object
{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-29-xxx/master-key.aes"}
-machine
pc-q35-6.1,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram
-cpu Haswell-noTSX-IBRS -m 4096 -object
{"qom-type":"memory-backend-ram","id":"pc.ram","size":4294967296}
-overcommit mem-lock=off -smp 2,sockets=2,cores=1,threads=1 -uuid
daf2c139-4991-4079-9b8a-b4c98fc675e0 -no-user-config -nodefaults
-chardev socket,id=charmonitor,fd=31,server=on,wait=off -mon
chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown
-boot strict=on -device
pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2
-device
pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1
-device
pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2
-device
pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3
-device
pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4
-device
pcie-root-port,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x5
-device
pcie-root-port,port=0x16,chassis=7,id=pci.7,bus=pcie.0,addr=0x2.0x6
-device
pcie-root-port,port=0x17,chassis=8,id=pci.8,bus=pcie.0,addr=0x2.0x7
-device
pcie-root-port,port=0x18,chassis=9,id=pci.9,bus=pcie.0,multifunction=on,addr=0x3
-device
pcie-root-port,port=0x19,chassis=10,id=pci.10,bus=pcie.0,addr=0x3.0x1
-device
pcie-root-port,port=0x1a,chassis=11,id=pci.11,bus=pcie.0,addr=0x3.0x2
-device
pcie-root-port,port=0x1b,chassis=12,id=pci.12,bus=pcie.0,addr=0x3.0x3
-device
pcie-root-port,port=0x1c,chassis=13,id=pci.13,bus=pcie.0,addr=0x3.0x4
-device
pcie-root-port,port=0x1d,chassis=14,id=pci.14,bus=pcie.0,addr=0x3.0x5
-device
pcie-root-port,port=0x1e,chassis=15,id=pci.15,bus=pcie.0,addr=0x3.0x6
-device qemu-xhci,id=usb,bus=pci.1,addr=0x0 -audiodev
id=audio1,driver=none -vnc
127.0.0.1:5410,websocket=41310,password=on,audiodev=audio1 -device
cirrus-vga,id=video0,bus=pcie.0,addr=0x1 -device
virtio-balloon-pci,id=balloon0,bus=pci.2,addr=0x0 -sandbox
on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny
-msg timestamp=on
This same guest XML worked properly in 5.2, but I'm not sure if it broke
in 6.0 or 6.1. We're adding all these empty root ports so we can
hotplug devices later without restarting the guest. Any idea what went
wrong here?
Guests wont start with 15 pcie-root-port devices
In 6.1, a guest with 15 empty pcie-root-port devices will not boot
properly - it just hangs on "Guest has not initialized the display
(yet).". As soon as I remove the last pcie-root-port, the guest begins
starting up normally. My qemu command line:
/usr/libexec/qemu-kvm -name guest=xxx,debug-threads=on -S -object
{"qom-type":"secret","id":"masterKey0","format":"raw","file":"/var/lib/libvirt/qemu/domain-29-xxx/master-key.aes"}
-machine
pc-q35-6.1,accel=kvm,usb=off,dump-guest-core=off,memory-backend=pc.ram
-cpu Haswell-noTSX-IBRS -m 4096 -object
{"qom-type":"memory-backend-ram","id":"pc.ram","size":4294967296}
-overcommit mem-lock=off -smp 2,sockets=2,cores=1,threads=1 -uuid
daf2c139-4991-4079-9b8a-b4c98fc675e0 -no-user-config -nodefaults
-chardev socket,id=charmonitor,fd=31,server=on,wait=off -mon
chardev=charmonitor,id=monitor,mode=control -rtc base=utc -no-shutdown
-boot strict=on -device
pcie-root-port,port=0x10,chassis=1,id=pci.1,bus=pcie.0,multifunction=on,addr=0x2
-device
pcie-root-port,port=0x11,chassis=2,id=pci.2,bus=pcie.0,addr=0x2.0x1
-device
pcie-root-port,port=0x12,chassis=3,id=pci.3,bus=pcie.0,addr=0x2.0x2
-device
pcie-root-port,port=0x13,chassis=4,id=pci.4,bus=pcie.0,addr=0x2.0x3
-device
pcie-root-port,port=0x14,chassis=5,id=pci.5,bus=pcie.0,addr=0x2.0x4
-device
pcie-root-port,port=0x15,chassis=6,id=pci.6,bus=pcie.0,addr=0x2.0x5
-device
pcie-root-port,port=0x16,chassis=7,id=pci.7,bus=pcie.0,addr=0x2.0x6
-device
pcie-root-port,port=0x17,chassis=8,id=pci.8,bus=pcie.0,addr=0x2.0x7
-device
pcie-root-port,port=0x18,chassis=9,id=pci.9,bus=pcie.0,multifunction=on,addr=0x3
-device
pcie-root-port,port=0x19,chassis=10,id=pci.10,bus=pcie.0,addr=0x3.0x1
-device
pcie-root-port,port=0x1a,chassis=11,id=pci.11,bus=pcie.0,addr=0x3.0x2
-device
pcie-root-port,port=0x1b,chassis=12,id=pci.12,bus=pcie.0,addr=0x3.0x3
-device
pcie-root-port,port=0x1c,chassis=13,id=pci.13,bus=pcie.0,addr=0x3.0x4
-device
pcie-root-port,port=0x1d,chassis=14,id=pci.14,bus=pcie.0,addr=0x3.0x5
-device
pcie-root-port,port=0x1e,chassis=15,id=pci.15,bus=pcie.0,addr=0x3.0x6
-device qemu-xhci,id=usb,bus=pci.1,addr=0x0 -audiodev
id=audio1,driver=none -vnc
127.0.0.1:5410,websocket=41310,password=on,audiodev=audio1 -device
cirrus-vga,id=video0,bus=pcie.0,addr=0x1 -device
virtio-balloon-pci,id=balloon0,bus=pci.2,addr=0x0 -sandbox
on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny
-msg timestamp=on
This same guest XML worked properly in 5.2, but I'm not sure if it broke
in 6.0 or 6.1. We're adding all these empty root ports so we can
hotplug devices later without restarting the guest. Any idea what went
wrong here?
