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Re: [Qemu-devel] Help needed: Sparc 64, kernel panic

From: Ajallooiean Hossein
Subject: Re: [Qemu-devel] Help needed: Sparc 64, kernel panic
Date: Tue, 25 Apr 2017 17:28:31 +0000

Hi Mark

Sorry for pinging so early.

Im just wondering if youve had time to go over my email below.

Any help would be greatly appreciated.

From: Qemu-devel <address@hidden> on behalf of Ajallooiean Hossein 
Sent: Sunday, April 23, 2017 1:42:08 AM
To: address@hidden
Cc: Mark Cave-Ayland
Subject: Re: [Qemu-devel] Help needed: Sparc 64, kernel panic

Hi Mark,

Thanks a lot for this. - it did work!

So, now im wondering how did you install the iso on disk?

would you mind sharing your command line for the install please? and hacks if 

i am now able to install and boot, but my boot hang after this line "[   
22.559491] [TTM] Initializing pool allocator" - inside user space. - I did 
blacklist bochs_drm for installing as such "-append 

also, i have a couple of questions if you dont mind responding to them. - ill 
appreciate this a lot:
1- did you use virtio for your install? i.e. not using the "-cdrom" command and 
blacklisting the pata_cmd64x and also providing your own virtio device 
    - i used this link for hints on how to install with virtio 

2- i see that you used ext3 for your OS install, isnt that slower than ext4? 
-again im referencing this: 

3- also, im noticing that you didnt define root=/dev/sda or root=/dev/vda1 for 
when your running qemu. and when im running your image i have to do that, 
otherwise ill get to the initramfs only. is there a trick behind this?

4- i dont see you defining a kernel and initrd? is there a reason for this? if 
i just use your cmd line, ill get this: also, are you extracting the kernel and 
initrd from the image or the iso?

OpenBIOS for Sparc64
Configuration device id QEMU version 1 machine id 0
kernel cmdline
UUID: 00000000-0000-0000-0000-000000000000
Welcome to OpenBIOS v1.1 built on Mar 15 2017 19:37
  Type 'help' for detailed information
Trying disk:a...
Not a bootable ELF image
Loading a.out image...
Loaded 7680 bytes
entry point is 0x4000
SILO Version 1.4.14

Thanks a lot in advance for your help.

From: Mark Cave-Ayland <address@hidden>
Sent: Saturday, April 22, 2017 11:12 AM
To: Ajallooiean Hossein; address@hidden
Subject: Re: [Qemu-devel] Help needed: Sparc 64, kernel panic

On 21/04/17 16:12, Ajallooiean Hossein wrote:

> Thanks for the files and the notes.
> I am attaching my config-host file for you. I'm on x86_64, running Linux 64, 
> Ubuntu 16.04.2 LTS
> so, i can also boot like you do - this worked before as well. btw, if you try 
> to install that to a disk, itll not be able to as youll need to define memory 
> for it.
> The problem is after i install the iso on the qcow2 disk and then try to boot 
> qemu-system-sparc64.
> so here is the steps to reproduce the issue:
> 1- create a qcow2 image : debian-9.0-sparc64-NETINST-1.qcow2
> 2- download debian image: debian-9.0-sparc64-NETINST-1.iso
> 3- install the OS on dIsk
> i use the below command line to do it:
> ./qemu-system-sparc64 -cdrom 
> /home/nihosa/Downloads/debian-9.0-sparc64-NETINST-1.iso -hda 
> /home/nihosa/Downloads/debian-sparc.qcow2 -nographic -boot d -L pc-bios -m 200
> i guess i dont have to define a kernel in the above code???
> 4- installation goes all well.
> 5- i try to run the new disk image: - here i add kernel as if i dont add it 
> ill get the below:
> https://pastebin.com/cFwrX9E9

I've just done a test install with
and I didn't see any errors similar to the ones you mention (although I
did have to blacklist the bochs_drm module upon boot).

The resulting qcow2 image can be found temporarily at
https://www.ilande.co.uk/tmp/qemu/sparc64-kernel/deb90.qcow2.xz and you
can launch it with:

./qemu-system-sparc64 -hda deb90.qcow2 -m 256 -nographic

Username and password are both root.



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