Thanks so much ChangLimin! You saved me a lot of time.
Thanks, Sean On Tue, Mar 2, 2021 at 4:15 PM ChangLimin <chan...@chinatelecom.cn> wrote: > There is no driver for it. You should write it by youself. Maybe you can > refer to > http://doc.dpdk.org/guides-1.8/prog_guide/ivshmem_lib.html and dpdk > source. > > Gool luck! > > > *From:* Sean Kuo <gcf1...@gmail.com> > *Date:* 2021-03-02 15:59 > *To:* ChangLimin <chan...@chinatelecom.cn> > *CC:* Bug 1917394 <1917...@bugs.launchpad.net>; qemu-devel > <qemu-devel@nongnu.org> > *Subject:* Re: [Bug 1917394] [NEW] command lspci does not show the > IVSHMEM device > Hi ChangLimin, > > Thanks for your reply. I checked again to find the device... I thought the > name was ivshmem. > I don't find any driver code for IVSHMEM in the linux and qemu repo. Can > you give me some help? > > 00:10.0 RAM memory: Red Hat, Inc. Inter-VM shared memory (rev 01) > Subsystem: Red Hat, Inc. QEMU Virtual Machine > Flags: fast devsel > Memory at fcc1c000 (32-bit, non-prefetchable) [size=256] > Memory at fdc00000 (64-bit, prefetchable) [size=4M] > > Thanks, > Sean > > > > > > > On Tue, Mar 2, 2021 at 3:31 PM ChangLimin <chan...@chinatelecom.cn> wrote: > >> Can you give the lspci messages? The below is my output. There is a RAM >> memory device. >> >> $ 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 82371SB PIIX3 IDE [Natoma/Triton >> II] >> 00:01.2 USB controller: Intel Corporation 82371SB PIIX3 USB >> [Natoma/Triton II] (rev 01) >> 00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03) >> 00:02.0 VGA compatible controller: Device 1234:1111 (rev 02) >> 00:03.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge >> 00:04.0 Ethernet controller: Red Hat, Inc. Virtio network device >> 00:05.0 SCSI storage controller: Red Hat, Inc. Virtio SCSI >> 00:06.0 Communication controller: Red Hat, Inc. Virtio console >> 00:10.0 RAM memory: Red Hat, Inc. Inter-VM shared memory (rev 01) >> 01:07.0 PCI bridge: Red Hat, Inc. QEMU PCI-PCI bridge >> >> >> *From:* sean kuo <1917...@bugs.launchpad.net> >> *Date:* 2021-03-02 11:24 >> *To:* qemu-devel <qemu-devel@nongnu.org> >> *Subject:* [Bug 1917394] [NEW] command lspci does not show the IVSHMEM >> device >> Public bug reported: >> >> qeum version: >> QEMU emulator version 4.2.1 >> >> I met a problem when I tried to use IVSHMEM. Command lspci does not show >> the IVSHMEM device. >> Below is the configuration from my side: >> >> 1. guest vm xml configuration. >> <shmem name='ivshmem'> >> <model type='ivshmem-plain'/> >> <size unit='M'>2</size> >> <address type='pci' domain='0x0000' bus='0x00' slot='0x10' >> function='0x0'/> >> </shmem> >> >> 2. after the booting up and I found the qemu commandline ideedly have >> the device option: >> ps aux | grep ivshmem >> /usr/bin/qemu-system-x86_64 >> .......(ignore other options) >> -object >> memory-backend-file,id=shmmem-shmem0,mem-path=/dev/shm/hostmem,size=4194304,share=yes >> -device ivshmem-plain,id=shmem0,memdev=shmmem-shmem0,bus=pcie.0,addr=0x10 >> >> 3. lspci command not shown the device. >> >> 4. lshw command indeedly show the device: >> >> *-memory UNCLAIMED >> description: RAM memory >> product: Inter-VM shared memory >> vendor: Red Hat, Inc. >> physical id: 10 >> bus info: pci@0000:00:10.0 >> version: 01 >> width: 64 bits >> clock: 33MHz (30.3ns) >> configuration: latency=0 >> resources: memory:fcc1c000-fcc1c0ff memory:fdc00000-fdffffff >> >> My host and vm os is ubuntu 20.04 and version is: >> #49~20.04.1-Ubuntu SMP Fri Feb 5 09:57:56 UTC 2021 x86_64 x86_64 x86_64 >> GNU/Linux >> >> ** Affects: qemu >> Importance: Undecided >> Status: New >> >> -- >> You received this bug notification because you are a member of qemu- >> devel-ml, which is subscribed to QEMU. >> https://bugs.launchpad.net/bugs/1917394 >> >> Title: >> command lspci does not show the IVSHMEM device >> >> Status in QEMU: >> New >> >> Bug description: >> qeum version: >> QEMU emulator version 4.2.1 >> >> I met a problem when I tried to use IVSHMEM. Command lspci does not >> show the IVSHMEM device. >> Below is the configuration from my side: >> >> 1. guest vm xml configuration. >> <shmem name='ivshmem'> >> <model type='ivshmem-plain'/> >> <size unit='M'>2</size> >> <address type='pci' domain='0x0000' bus='0x00' slot='0x10' >> function='0x0'/> >> </shmem> >> >> 2. after the booting up and I found the qemu commandline ideedly have >> the device option: >> ps aux | grep ivshmem >> /usr/bin/qemu-system-x86_64 >> .......(ignore other options) >> -object >> memory-backend-file,id=shmmem-shmem0,mem-path=/dev/shm/hostmem,size=4194304,share=yes >> -device ivshmem-plain,id=shmem0,memdev=shmmem-shmem0,bus=pcie.0,addr=0x10 >> >> 3. lspci command not shown the device. >> >> 4. lshw command indeedly show the device: >> >> *-memory UNCLAIMED >> description: RAM memory >> product: Inter-VM shared memory >> vendor: Red Hat, Inc. >> physical id: 10 >> bus info: pci@0000:00:10.0 >> version: 01 >> width: 64 bits >> clock: 33MHz (30.3ns) >> configuration: latency=0 >> resources: memory:fcc1c000-fcc1c0ff >> memory:fdc00000-fdffffff >> >> My host and vm os is ubuntu 20.04 and version is: >> #49~20.04.1-Ubuntu SMP Fri Feb 5 09:57:56 UTC 2021 x86_64 x86_64 x86_64 >> GNU/Linux >> >> To manage notifications about this bug go to: >> https://bugs.launchpad.net/qemu/+bug/1917394/+subscriptions >> >> >>
