[Qemu-devel] FW: QEMU and suspend2

[Qemu-devel] FW: QEMU and suspend2

[Simon Guerrero]

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I'm figuring that nobody has an answer for this. Can anyone suggest an idea
as to what files I need to look at in the Qemu sources to see if suspend2
has "polluted" the networking ability?
-----Original Message-----
From: Simon Guerrero 
Sent: 17 October 2005 11:36
To: 'qemu-devel@nongnu.org'
Subject: QEMU and suspend2


Hi
 
I am developing a custom kernel using Qemu. I have an amd64 system, running
an ia32 chroot in which I build 32 bit kernels and run Qemu to test them. My
kernel is a bare minimum 2.6 and worked just fine until I added the suspend2
(software suspend) patch and rebuilt.
 
Now when qemu starts up, everything works fine except networking (I am using
user-net). It claims it can't identify the network hardware and as a
consequence, eth0 isn't created.
 
When I compare the two .config files for the kernel (before and after the
suspend2 patch), there is nothing changed that should affect networking -
only some new definitions for suspend2 and switching on LZF compression,
etc.
 
Is there a known issue with suspend2 and qemu?
 
Any help appreciated.
 
Thanks
 
Simon


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Re: [Qemu-devel] FW: QEMU and suspend2

[John Coiner]

Simon,

There's a known issue with using suspend2 on a QEMU host, described here:

http://people.brandeis.edu/~jcoiner/qemu_idedma/qemu_dma_patch.html#suspend

But, it sounds like you have trouble with a suspend2-capable guest 
kernel, and that the trouble starts as soon as you boot (ie before you 
actually use the suspend2 feature.) Is that right?

You might try uncommenting the "#define DEBUG_NE2000" line in 
hw/ne2000.c, recompiling, and then comparing the debug log from a 
vanilla guest kernel against the debug log from a suspend2 guest kernel.

Good luck.

-- john


Simon Guerrero wrote:
> I'm figuring that nobody has an answer for this. Can anyone suggest an 
> idea as to what files I need to look at in the Qemu sources to see if 
> suspend2 has "polluted" the networking ability?
> -----Original Message-----
> *From:* Simon Guerrero
> *Sent:* 17 October 2005 11:36
> *To:* 'qemu-devel@nongnu.org'
> *Subject:* QEMU and suspend2
> 
> Hi
>  
> I am developing a custom kernel using Qemu. I have an amd64 system, 
> running an ia32 chroot in which I build 32 bit kernels and run Qemu to 
> test them. My kernel is a bare minimum 2.6 and worked just fine until I 
> added the suspend2 (software suspend) patch and rebuilt.
>  
> Now when qemu starts up, everything works fine except networking (I am 
> using user-net). It claims it can't identify the network hardware and as 
> a consequence, eth0 isn't created.
>  
> When I compare the two .config files for the kernel (before and after 
> the suspend2 patch), there is nothing changed that should affect 
> networking - only some new definitions for suspend2 and switching on LZF 
> compression, etc.
>  
> Is there a known issue with suspend2 and qemu?
>  
> Any help appreciated.
>  
> Thanks
>  
> Simon
> 
> 
> **********************************************************************
> This email and any files transmitted with it are confidential and
> intended solely for the use of the individual or entity to whom they
> are addressed. If you have received this email in error please notify
> the system manager.
> 
> This footnote also confirms that this email message has been swept by
> MIMEsweeper for the presence of computer viruses.
> 
> www.mimesweeper.com
> **********************************************************************
> 
> _____________________________________________________________________
> 
> This message has been checked for all known viruses on behalf of Sungard 
> Vivista by MessageLabs.
> 
> http://www.messagelabs.com or Email: mailsweeper.info@vivista.co.uk
> 
> For further information http://www.sungard.com/vivista
> 
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