[Qemu-devel] qemu for x86_64

[Qemu-devel] qemu for x86_64

[jmf]

Please create qemu for x86_64.



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Re: [Qemu-devel] qemu for x86_64

[Johannes Schindelin]

Hi,

On Thu, 30 Sep 2004, jmf wrote:

> Please create qemu for x86_64.

Please send me an Opteron. And while you're at it, I could use a car, too.

---
You can tune cars, but you cannot car toons.

Re: [Qemu-devel] qemu for x86_64

[jmf]

>  --- On Thu 09/30, Johannes Schindelin < Johannes.Schindelin@gmx.de > wrote:

> On Thu, 30 Sep 2004, jmf wrote: Please create qemu for x86_64. 

> Please send me an Opteron. And while you're at it, I could use a car, too.



A new Athlon64 processor can be purchased for only $150.00 (USD). If none of the developers can afford that, we could take up a collection here.



x86_64 is only an extension, a super-set, of the existing 32 bit architecture. This is not some completely different instruction set. Qemu already has most of the work finished in the 32 bit x86 version. The GNU GCC developers claimed porting GCC to amd64 was "easy", so you can forget the car. This should be an easy port for one of the primary maintainers. If I knew the code well, I'd do it myself but, I'm still working on Qemu networking.



With both AMD and Intel now using x86_64, this will be the future, so it's only a matter of time before most x86 users are asking for x86_64-Qemu.









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Re: [Qemu-devel] qemu for x86_64

[Paul Brook]

> x86_64 is only an extension, a super-set, of the existing 32 bit
> architecture. This is not some completely different instruction set. Qemu
> already has most of the work finished in the 32 bit x86 version. The GNU
> GCC developers claimed porting GCC to amd64 was "easy", so you can forget
> the car. This should be an easy port for one of the primary maintainers. If
> I knew the code well, I'd do it myself but, I'm still working on Qemu
> networking.

Porting to gcc to amd64 is only "easy" compared to porting to a whole new 
architecture (eg. ia64).

Also, calling x86_64 "only an extension" isn't really accurate. This totally 
ignores the fact that you need to make sure the qemu i386 backend is 64-bit 
safe (I'm fairly sure it isn't), plus implement MMX and SSE.

Compare the cost of an amd64 machine and a car to the list price of vmware or 
VirtualPC, and I think you've got yourself a bargain :-)

Paul

[Qemu-devel] Re: qemu for x86_64

[Ben Pfaff]

Paul Brook <paul@codesourcery.com> writes:

> Compare the cost of an amd64 machine and a car to the list price of vmware or 
> VirtualPC, and I think you've got yourself a bargain :-)

I don't think any released version of VMware virtualizes x86-64
yet, either.
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