No 'PCI' bus found for device 'ivshmem-plain'

[Sanjeev Kumar]

Hi,

I am starting QEMU as below.

qemu-system-aarch64 [....] -device ivshmem-plain,memdev=hostmem -object memory-backend-file,size=1M,share=on,mem-path=/dev/shm/ivshmem,id=hostmem

before this, i am starting ivshmem-server which i build from QEMU source git repo. i am able to see ivshmem device created under /dev/shm. but after starting QEMU, i am seeing error like

qemu-system-aarch64: -device ivshmem-plain,memdev=hostmem: No 'PCI' bus found for device 'ivshmem-plain'

i tried building uio_ivshmem from https://github.com/henning-schild-work/ivshmem-guest-code/tree/master/kernel_module/uio and loading uio_ivshmem.ko

still not working.

 

output of lspci is

$ lspci
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371AB/EB/MB PIIX4 IDE (rev 01)
00:02.0 VGA compatible controller: VMware SVGA II Adapter
00:03.0 Ethernet controller: Intel Corporation 82540EM Gigabit Ethernet Controller (rev 02)
00:04.0 System peripheral: InnoTek Systemberatung GmbH VirtualBox Guest Service
00:05.0 Multimedia audio controller: Intel Corporation 82801AA AC'97 Audio Controller (rev 01)
00:06.0 USB controller: Apple Inc. KeyLargo/Intrepid USB
00:07.0 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 08)
00:0b.0 USB controller: Intel Corporation 82801FB/FBM/FR/FW/FRW (ICH6 Family) USB2 EHCI Controller
00:0d.0 SATA controller: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) SATA Controller [AHCI mode] (rev 02)

i am using ubuntu 22.04 running in oracle virtualbox hosted on windows PC.

please help.