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(HERMES) with SMTP id C990E28009F; Tue, 2 Mar 2021 15:30:57 +0800 (CST) X-189-SAVE-TO-SEND: 71112636@chinatelecom.cn Received: from ([172.18.0.92]) by App0021 with ESMTP id 6683da60a19642feb9695fd8141778e8 for gcf1129@gmail.com; Tue Mar 2 15:31:00 2021 X-Transaction-ID: 6683da60a19642feb9695fd8141778e8 X-filter-score: filter<0> X-Real-From: changlm@chinatelecom.cn X-Receive-IP: 172.18.0.92 X-MEDUSA-Status: 0 Date: Tue, 2 Mar 2021 15:30:53 +0800 From: ChangLimin To: "Sean Kuo" , "Bug 1917394" <1917394@bugs.launchpad.net>, qemu-devel Subject: Re: [Bug 1917394] [NEW] command lspci does not show the IVSHMEM device References: <161465544550.24578.14846009621606228644.malonedeb@wampee.canonical.com> X-Priority: 3 X-GUID: A04E7069-1AD4-47AC-AA2B-E9C5D461723A X-Has-Attach: no X-Mailer: Foxmail 7.2.17.58[cn] Mime-Version: 1.0 Message-ID: <2021030215305283912052@chinatelecom.cn> Content-Type: multipart/alternative; boundary="----=_001_NextPart068060514861_=----" Received-SPF: pass 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Can you give the lspci messages? The below i= s my output.  There is a RAM memory device.

=
$ ls= pci
00:00.0 Host bridge: Intel Corporation 440FX - 82441F= X PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82= 371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel = Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.2 USB con= troller: Intel Corporation 82371SB PIIX3 USB [Natoma/Triton II] (rev 01)
00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 0= 3)
00:02.0 VGA compatible controller: Device 1234:1111 (rev 02)<= /div>
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
00:0= 6.0 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
=0A

=
=0A
 
From: = sean kuo
Date: 2021-03-02 11:24
<= b>To: qemu-devel
Subject: [Bug 1917394] [NEW] command lspci does not sho= w the IVSHMEM device
Public bug reported:
= =0A
 
=0A
qeum version:
=0A
QEMU emulator versi= on 4.2.1
=0A
 
=0A
I met a problem when I tried to = use IVSHMEM. Command lspci does not show the IVSHMEM device.
=0A
= Below is the configuration from my side:
=0A
 
=0A
= 1.  guest vm xml configuration.
=0A
  <shmem name=3D= 'ivshmem'>
=0A
      <model type= =3D'ivshmem-plain'/>
=0A
      <si= ze unit=3D'M'>2</size>
=0A
     = ; <address type=3D'pci' domain=3D'0x0000' bus=3D'0x00' slot=3D'0x10' fu= nction=3D'0x0'/>
=0A
    </shmem>
= =0A
 
=0A
2. after the booting up and I found the qemu c= ommandline ideedly  have the device option:
=0A
ps aux | gre= p ivshmem
=0A
/usr/bin/qemu-system-x86_64
=0A
 &n= bsp;    .......(ignore other options)
=0A
-object = memory-backend-file,id=3Dshmmem-shmem0,mem-path=3D/dev/shm/hostmem,size=3D= 4194304,share=3Dyes -device ivshmem-plain,id=3Dshmem0,memdev=3Dshmmem-shme= m0,bus=3Dpcie.0,addr=3D0x10
=0A
 
=0A
3. lspci comm= and  not shown the device.
=0A
 
=0A
4. lshw c= ommand indeedly show the device:
=0A
 
=0A
*-memory= UNCLAIMED
=0A
        &n= bsp;    description: RAM memory
=0A
  &n= bsp;          product: Inter-= VM shared memory
=0A
       &n= bsp;     vendor: Red Hat, Inc.
=0A
 &nbs= p;           physical id= : 10
=0A
         &n= bsp;   bus info: pci@0000:00:10.0
=0A
   = ;          version: 01
= =0A
           =   width: 64 bits
=0A
      &nb= sp;      clock: 33MHz (30.3ns)
=0A
 = ;            config= uration: latency=3D0
=0A
      &nbs= p;      resources: memory:fcc1c000-fcc1c0ff memor= y:fdc00000-fdffffff
=0A
 
=0A
My host and vm os is = ubuntu 20.04 and version is:
=0A
#49~20.04.1-Ubuntu SMP Fri Feb 5= 09:57:56 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
=0A
 =0A
** Affects: qemu
=0A
     Importance= : Undecided
=0A
         = Status: New
=0A
 
=0A
--
=0A
You received= this bug notification because you are a member of qemu-
=0A
deve= l-ml, which is subscribed to QEMU.
=0A
https://bugs.launchpad.net= /bugs/1917394
=0A
 
=0A
Title:
=0A
  = command lspci does not show the IVSHMEM device
=0A
 
= =0A
Status in QEMU:
=0A
  New
=0A
 
= =0A
Bug description:
=0A
  qeum version:
=0A
&n= bsp; QEMU emulator version 4.2.1
=0A
 
=0A
  I= met a problem when I tried to use IVSHMEM. Command lspci does not show th= e IVSHMEM device.
=0A
  Below is the configuration from my s= ide:
=0A
 
=0A
  1.  guest vm xml configu= ration.
=0A
    <shmem name=3D'ivshmem'>=0A
        <model type=3D'ivs= hmem-plain'/>
=0A
        &= lt;size unit=3D'M'>2</size>
=0A
    =     <address type=3D'pci' domain=3D'0x0000' bus=3D'0x00'= slot=3D'0x10' function=3D'0x0'/>
=0A
    =   </shmem>
=0A
 
=0A
  2. after the= booting up and I found the qemu commandline ideedly  have the device= option:
=0A
  ps aux | grep ivshmem
=0A
 &nbs= p; /usr/bin/qemu-system-x86_64
=0A
     = ;   .......(ignore other options)
=0A
  -object me= mory-backend-file,id=3Dshmmem-shmem0,mem-path=3D/dev/shm/hostmem,size=3D41= 94304,share=3Dyes -device ivshmem-plain,id=3Dshmem0,memdev=3Dshmmem-shmem0= ,bus=3Dpcie.0,addr=3D0x10
=0A
 
=0A
  3. lspci= command  not shown the device.
=0A
 
=0A
&nbs= p; 4. lshw command indeedly show the device:
=0A
 
=0A<= div>  *-memory UNCLAIMED
=0A
     &= nbsp;         description: RAM mem= ory
=0A
         &nb= sp;     product: Inter-VM shared memory
=0A
&= nbsp;           &nb= sp;  vendor: Red Hat, Inc.
=0A
     = ;          physical id: 10=0A
          &nb= sp;    bus info: pci@0000:00:10.0
=0A
  =              v= ersion: 01
=0A
        &n= bsp;      width: 64 bits
=0A
  = ;             = clock: 33MHz (30.3ns)
=0A
      &nb= sp;        configuration: latency=3D0=0A
          &n= bsp;    resources: memory:fcc1c000-fcc1c0ff memory:fdc00000= -fdffffff
=0A
 
=0A
  My host and vm os is ubu= ntu 20.04 and version is:
=0A
  #49~20.04.1-Ubuntu SMP Fri F= eb 5 09:57:56 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
=0A
 <= /div>=0A
To manage notifications about this bug go to:
=0A
ht= tps://bugs.launchpad.net/qemu/+bug/1917394/+subscriptions
=0A
&nb= sp;
=0A
=0A ------=_001_NextPart068060514861_=------