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SubjectRe: [ANNOUNCE] kvm howto
On 11/2/06, Avi Kivity <avi@qumranet.com> wrote:
> Hesse, Christian wrote:
> > On Thursday 02 November 2006 14:25, Avi Kivity wrote:
> >
> >> I've just uploaded a HOWTO to http://kvm.sourceforge.net, including
> >> (hopefuly) everything needed to get kvm running. Please take a look and
> >> comment.
> >>
> >
> > CC [M] /tmp/kvm-module/kvm_main.o
> > {standard input}: Assembler messages:
> > {standard input}:168: Error: no such instruction: `vmxon 16(%esp)'
> > {standard input}:182: Error: no such instruction: `vmxoff'
> > {standard input}:192: Error: no such instruction: `vmread %eax,%eax'
> > {standard input}:415: Error: no such instruction: `vmwrite %ebx,%esi'
> > {standard input}:1103: Error: no such instruction: `vmclear 16(%esp)'
> > {standard input}:1676: Error: no such instruction: `vmptrld 16(%esp)'
> > {standard input}:4107: Error: no such instruction: `vmwrite %esp,%eax'
> > {standard input}:4119: Error: no such instruction: `vmlaunch '
> > {standard input}:4121: Error: no such instruction: `vmresume '
> >
> > I get a number of errors compiling the module. No difference between the
> > downloaded tarball and my patched kernel tree. Any hints?
> >
>
> You need a newer binutils. I'm using binutils-2.16.91.0.6 (gotta love
> that version number), shipped with Fedora Core 5.

The VT-extensions added by Intel and AMD only adds a limited number of
instructions each. If you want to be user friendly it might be a good
idea to implement these instructions as macros. I'm pretty sure
VT-extension support in Xen works with my old binutils version.

/ magnus
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