Re: [Qemu-devel] [PATCH 0/6] Fix -kernel with SeaBIOS v2

[Avi Kivity]

On 11/30/2009 08:50 PM, Christoph Hellwig wrote:
> > Sounds like your guest kernel is trying to access an x86_64 register?
> >
> > You can of cause try insmod'ing kvm.ko with ignore_msrs=1. You hopefully
> > don't need syscalls until you get into user space.
> >      
> The option doesn't exist yet in 2.6.31 which I'm running on this box
> because 2.6.32-rc has massive regressions for my workload.  I booted
> into it again anyway to test the option - and interestingly enough
> qemu with -enable-kvm boots just fine even without ignore_msrs=1.
>
> Looks like the problem only happens with older kernels.
>    

Strange - qemu -kernel has zero interaction with the host kernel.  It's 
a totally normal boot process.


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