[ANNOUNCE] kvm howto

[ANNOUNCE] kvm howto

[Avi Kivity]

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.

BTW, we have the AMD port running with fairly impressive performance.

-- 
error compiling committee.c: too many arguments to function

Re: [ANNOUNCE] kvm howto

[Hesse, Christian]

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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?
-- 
Regards,
Christian

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Re: [ANNOUNCE] kvm howto

[Avi Kivity]

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.

I'll update the howto to reflect this.

-- 
error compiling committee.c: too many arguments to function


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Re: [ANNOUNCE] kvm howto

[Magnus Damm]

On 11/2/06, Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org> 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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Re: [ANNOUNCE] kvm howto

[Avi Kivity]

Magnus Damm wrote:
>>
>> 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.
>

Yes, Xen uses macros.

I figured a newish machine will have a newish binutils.  Looks like I 
was wrong.  I don't like uglifying the code, but if many users hit this, 
there won't be much of a choice.

[A minor problem with macros is that you can't let gcc choose the 
registers for you with instructions that have operands]

-- 
error compiling committee.c: too many arguments to function


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