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[Bug 1917394] [NEW] command lspci does not show the IVSHMEM device
From: |
sean kuo |
Subject: |
[Bug 1917394] [NEW] command lspci does not show the IVSHMEM device |
Date: |
Tue, 02 Mar 2021 03:24:05 -0000 |
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
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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
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- [Bug 1917394] [NEW] command lspci does not show the IVSHMEM device,
sean kuo <=