Re: No 'PCI' bus found for device 'ivshmem-plain'
On Thu, 21 Mar 2024 at 08:16, Sanjeev Kumar wrote: > > Hi, > our kernel is build with aarch64le. it is 64 bit ARM architecture. Such a kernel cannot possibly boot on the vexpress-a15 machine that you say you are using. So something doesn't seem right... > when i am trying to use virt as machine, then qemu isn't starting. it is > being stuck after entering command, You probably didn't build your kernel correctly to have all the support needed for the virt machine's devices. I recommend finding a tutorial on how to boot Linux on the virt board. This one is a bit old but the basic process will still work with newer Debian versions: https://translatedcode.wordpress.com/2017/07/24/installing-debian-on-qemus-64-bit-arm-virt-board/ thanks -- PMM
Re: No 'PCI' bus found for device 'ivshmem-plain'
as we are beginners. can you please guide us on using virt cpu please. On Thu, Mar 21, 2024 at 1:52 PM Sanjeev Kumar wrote: > cpu we are using cortex-a57 because it is nearby to our actual hardware > exynos v9 > > On Thu, Mar 21, 2024 at 1:46 PM Sanjeev Kumar > wrote: > >> Hi, >> our kernel is build with aarch64le. it is 64 bit ARM architecture. >> when i am trying to use virt as machine, then qemu isn't starting. it is >> being stuck after entering command, >> >> On Wed, Mar 20, 2024 at 7:06 PM Peter Maydell >> wrote: >> >>> On Wed, 20 Mar 2024 at 13:06, Sanjeev Kumar >>> wrote: >>> > >>> > Hi Peter, >>> > Thanks for your detailed review. >>> > ifs.bin is our custom build and the linux kernel is booting fine with >>> this file. >>> >>> If it is, then it must be a 32-bit kernel. So trying to run it >>> on the cortex-a57 will not work at all, because that is a 64-bit >>> CPU and will only boot 64-bit kernels. (QEMU emulation does not >>> allow booting a guest kernel in 32-bit mode for CPUs that in >>> hardware support both 32-bit and 64-bit, I'm afraid.) >>> >>> > "this board doesn't have a PCI bus" - can you please suggest some >>> board which can support PCI bus? >>> >>> I just did: try the "virt" board. You'll need to decide what >>> CPU you actually want to run first, though. >>> >>> thanks >>> -- PMM >>> >>
Re: No 'PCI' bus found for device 'ivshmem-plain'
cpu we are using cortex-a57 because it is nearby to our actual hardware exynos v9 On Thu, Mar 21, 2024 at 1:46 PM Sanjeev Kumar wrote: > Hi, > our kernel is build with aarch64le. it is 64 bit ARM architecture. > when i am trying to use virt as machine, then qemu isn't starting. it is > being stuck after entering command, > > On Wed, Mar 20, 2024 at 7:06 PM Peter Maydell > wrote: > >> On Wed, 20 Mar 2024 at 13:06, Sanjeev Kumar >> wrote: >> > >> > Hi Peter, >> > Thanks for your detailed review. >> > ifs.bin is our custom build and the linux kernel is booting fine with >> this file. >> >> If it is, then it must be a 32-bit kernel. So trying to run it >> on the cortex-a57 will not work at all, because that is a 64-bit >> CPU and will only boot 64-bit kernels. (QEMU emulation does not >> allow booting a guest kernel in 32-bit mode for CPUs that in >> hardware support both 32-bit and 64-bit, I'm afraid.) >> >> > "this board doesn't have a PCI bus" - can you please suggest some board >> which can support PCI bus? >> >> I just did: try the "virt" board. You'll need to decide what >> CPU you actually want to run first, though. >> >> thanks >> -- PMM >> >
Re: No 'PCI' bus found for device 'ivshmem-plain'
Hi, our kernel is build with aarch64le. it is 64 bit ARM architecture. when i am trying to use virt as machine, then qemu isn't starting. it is being stuck after entering command, On Wed, Mar 20, 2024 at 7:06 PM Peter Maydell wrote: > On Wed, 20 Mar 2024 at 13:06, Sanjeev Kumar > wrote: > > > > Hi Peter, > > Thanks for your detailed review. > > ifs.bin is our custom build and the linux kernel is booting fine with > this file. > > If it is, then it must be a 32-bit kernel. So trying to run it > on the cortex-a57 will not work at all, because that is a 64-bit > CPU and will only boot 64-bit kernels. (QEMU emulation does not > allow booting a guest kernel in 32-bit mode for CPUs that in > hardware support both 32-bit and 64-bit, I'm afraid.) > > > "this board doesn't have a PCI bus" - can you please suggest some board > which can support PCI bus? > > I just did: try the "virt" board. You'll need to decide what > CPU you actually want to run first, though. > > thanks > -- PMM >
Re: No 'PCI' bus found for device 'ivshmem-plain'
On Wed, 20 Mar 2024 at 13:06, Sanjeev Kumar wrote: > > Hi Peter, > Thanks for your detailed review. > ifs.bin is our custom build and the linux kernel is booting fine with this > file. If it is, then it must be a 32-bit kernel. So trying to run it on the cortex-a57 will not work at all, because that is a 64-bit CPU and will only boot 64-bit kernels. (QEMU emulation does not allow booting a guest kernel in 32-bit mode for CPUs that in hardware support both 32-bit and 64-bit, I'm afraid.) > "this board doesn't have a PCI bus" - can you please suggest some board which > can support PCI bus? I just did: try the "virt" board. You'll need to decide what CPU you actually want to run first, though. thanks -- PMM
Re: No 'PCI' bus found for device 'ivshmem-plain'
Hi Peter, Thanks for your detailed review. ifs.bin is our custom build and the linux kernel is booting fine with this file. "this board doesn't have a PCI bus" - can you please suggest some board which can support PCI bus? if possible can you please reframe the command line which i shared with you with the supported board that supports PCI bus ? On Wed, Mar 20, 2024 at 3:21 PM Peter Maydell wrote: > On Wed, 20 Mar 2024 at 06:40, Sanjeev Kumar > wrote: > > > > Hi, > > Sorry for incomplete command. > > here is the complete command line. > > > > qemu-system-aarch64 -machine vexpress-a15 -cpu cortex-a57 -smp 4 -m 10G > -kernel ifs.bin -drive file=disk-qemu.vmdk,if=none,id=drv0 -device > virtio-blk-device,drive=drv0 -netdev > tap,id=mynet0,ifname=tap0,script=no,downscript=no -device > virtio-net-device,netdev=mynet0,mac=52:55:00:d1:55:01 -device > virtio-rng-device -device ivshmem-plain,memdev=hostmem -object > memory-backend-file,size=1M,share=on,mem-path=/dev/shm/ivshmem,id=hostmem > -nographic > > Thanks. This command line is very confused. It is trying to use > the "vexpress-a15" board model with a Cortex-A57. As the > board name suggests, vexpress-a15 only works with a Cortex-A15. > This board also cannot support the 10G of memory you are trying > to use with it. Finally, the reason for the error message is that > this board doesn't have a PCI bus, so there is no way to plug in > the ivshmem PCI device you are trying to create. > > Also, "ifs.bin" is an odd name for a kernel: is this really > a file that expects to be booted the way a Linux kernel is booted? > > If you want a board model that can handle 64-bit CPUs, lots > of memory and PCI devices, I would suggest looking at the > "virt" board. You'll need to make sure your kernel is > built for that board. > > thanks > -- PMM >
Re: No 'PCI' bus found for device 'ivshmem-plain'
On Wed, 20 Mar 2024 at 06:40, Sanjeev Kumar wrote: > > Hi, > Sorry for incomplete command. > here is the complete command line. > > qemu-system-aarch64 -machine vexpress-a15 -cpu cortex-a57 -smp 4 -m 10G > -kernel ifs.bin -drive file=disk-qemu.vmdk,if=none,id=drv0 -device > virtio-blk-device,drive=drv0 -netdev > tap,id=mynet0,ifname=tap0,script=no,downscript=no -device > virtio-net-device,netdev=mynet0,mac=52:55:00:d1:55:01 -device > virtio-rng-device -device ivshmem-plain,memdev=hostmem -object > memory-backend-file,size=1M,share=on,mem-path=/dev/shm/ivshmem,id=hostmem > -nographic Thanks. This command line is very confused. It is trying to use the "vexpress-a15" board model with a Cortex-A57. As the board name suggests, vexpress-a15 only works with a Cortex-A15. This board also cannot support the 10G of memory you are trying to use with it. Finally, the reason for the error message is that this board doesn't have a PCI bus, so there is no way to plug in the ivshmem PCI device you are trying to create. Also, "ifs.bin" is an odd name for a kernel: is this really a file that expects to be booted the way a Linux kernel is booted? If you want a board model that can handle 64-bit CPUs, lots of memory and PCI devices, I would suggest looking at the "virt" board. You'll need to make sure your kernel is built for that board. thanks -- PMM
Re: No 'PCI' bus found for device 'ivshmem-plain'
Hi, Sorry for incomplete command. here is the complete command line. qemu-system-aarch64 -machine vexpress-a15 -cpu cortex-a57 -smp 4 -m 10G -kernel ifs.bin -drive file=disk-qemu.vmdk,if=none,id=drv0 -device virtio-blk-device,drive=drv0 -netdev tap,id=mynet0,ifname=tap0,script=no,downscript=no -device virtio-net-device,netdev=mynet0,mac=52:55:00:d1:55:01 -device virtio-rng-device -device ivshmem-plain,memdev=hostmem -object memory-backend-file,size=1M,share=on,mem-path=/dev/shm/ivshmem,id=hostmem -nographic Thanks & Regards, Sanjeev. On Tue, Mar 19, 2024 at 3:58 PM Peter Maydell wrote: > On Tue, 19 Mar 2024 at 09:41, Sanjeev Kumar > wrote: > > > > 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 > > > Please give us the *full* command line, not the command line with > half of it missing. I suspect the reason this is not working > is going to be in the part you have [] omitted :-) > > thanks > -- PMM >
Re: No 'PCI' bus found for device 'ivshmem-plain'
On Tue, 19 Mar 2024 at 09:41, Sanjeev Kumar wrote: > > 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 Please give us the *full* command line, not the command line with half of it missing. I suspect the reason this is not working is going to be in the part you have [] omitted :-) thanks -- PMM
No 'PCI' bus found for device 'ivshmem-plain'
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.
