RE: HVM DomU on F9?

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	For anyone who might have been following this thread, I accidentally
forgot to add fedora-xen to the recipient list before sending my last reply.
It is below, along with a response from Avi.  I updated my F8 box, and sure
enough, kvm-60 was installed.  I thought I had just done that and kvm-55 was
where it stopped, but I must be crazy or something.  Also, I got the gplpv
drivers by James Harper installed and functional as of version 0.9.2 (I had
no luck with 0.9.0 or any prior version).  That said, I probably won't go
any further with my quest for kvm, at least not in the near future.  The
stdvga emulation kvm uses (or at least used on kvm-47) was nice with the
standard vesa drivers referenced on the kvm site (went higher than
1024x768), and those drivers don't work for the stdvga=1 option in xen, but
I think the potential performance gain from the multiple paravirtual drivers
will be more important for me.  Also, as I didn't follow up on it, I did try
to install CentOS 5.1 on this machine and it does not support the network
card, so I am on Fedora 8 as originally recommended by Emre.
	Dustin

-----Original Message-----
From: Avi Kivity [mailto:avi@xxxxxxxxxxxx] 
Sent: Friday, May 30, 2008 03:13
To: Dustin.Henning@xxxxxxxxxxx
Subject: Re:  HVM DomU on F9?

[please use the list for questions like this]

Dustin Henning wrote:
> 	It doesn't look like F8 is likely to get up to kvm-58 either.

F8 is up to kvm-60.

>   I
> prefer to stick with the Fedora repositories for the machine I am working
> with, as I don't want to run into compatibility issues on account of some
> future update.  However, I want to try to use the network driver, as I am
> hopeful that it might make an apache application I am running perform
> better.  It is also possible that I really need disk drivers for that.
> Would compiling a newer version of kvm on Fedora 8 be risky (in terms of
> interoperability problems after some future update)?  

No.

> Also, assuming the
> answer to that is no, do I need to remove any certain packages first to
make
> sure they don't update and overwrite it?  

No.  Do a ./configure --prefix=/opt/kvm-69 and all files will be placed 
there.

> Finally, on the Fedora repo
> versions of KVM for F7 and F8, I can't create a VM with 2 GiB of RAM.  Was
> this a known kvm bug at some point (or worse, is it still?), or could it
be
> a problem with Fedora (I can do this fine in xen)?  Thanks,
>   

For more than 2GB of RAM in a guest, you need a 64-bit hypervisor.  
Large guest support was added in kvm-47 (2TB guests were booted).

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.



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