[Linux-ia64] Linux, Itanium and PA/RISC

[Linux-ia64] Linux, Itanium and PA/RISC

[Adriano Galano]

Hi all:

I read that IA-64 support PA-RISC instruction mapping. That's mean that I
can use Linux for PA/RISC (http://www.parisc-linux.org/) in a Itanium 2
computer?

Best regards,
--
Adriano M. Galano Diez
System & Network Engineer
http://www.satec.es
Phone: (+34) 917 089 000
Sourceforge.NET Linux Kernel Foundry Guide http://sf.net/foundry/linuxkernel

Re: [Linux-ia64] Linux, Itanium and PA/RISC

[Matthew Wilcox]

On Mon, Mar 24, 2003 at 11:41:18AM +0100, Adriano Galano wrote:
> Hi all:
> 
> I read that IA-64 support PA-RISC instruction mapping. That's mean that I
> can use Linux for PA/RISC (http://www.parisc-linux.org/) in a Itanium 2
> computer?

No.  You certainly can't run a PA-RISC kernel on an IA64 box, just like
you can't run an x86 kernel on an ia64 box.

-- 
"It's not Hollywood.  War is real, war is primarily not about defeat or
victory, it is about death.  I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk

RE: [Linux-ia64] Linux, Itanium and PA/RISC

[Adriano Galano]

Hi Matthew and *:

> On Mon, Mar 24, 2003 at 11:41:18AM +0100, Adriano Galano wrote:
> > Hi all:
> >
> > I read that IA-64 support PA-RISC instruction mapping.
> That's mean that I
> > can use Linux for PA/RISC (http://www.parisc-linux.org/) in
> a Itanium 2
> > computer?
>
> No.  You certainly can't run a PA-RISC kernel on an IA64 box,
> just like
> you can't run an x86 kernel on an ia64 box.
>

Sorry for my newbie questions but:

If IPF support PA-RISC mapping is not easy to "port" the PA/RISC Linux,
excluding architectural changes in the chipset or booting process?

How HP/UX v 11.6 could be offer compatibility between PA/RISC and Itanium 2
systems?

How "exact" is the PA-RISC mapping on the IA-64 core?


> --
> "It's not Hollywood.  War is real, war is primarily not about
> defeat or
> victory, it is about death.  I've seen thousands and
> thousands of dead bodies.
> Do you think I want to have an academic debate on this
> subject?" -- Robert Fisk

Regards,

-Adriano (bryam)
--
Adriano M. Galano Diez
System & Network Engineer
http://www.satec.es
Phone: (+34) 917 089 000
Sourceforge.NET Linux Kernel Foundry Guide http://sf.net/foundry/linuxkernel

Re: [Linux-ia64] Linux, Itanium and PA/RISC

[Matthew Wilcox]

On Mon, Mar 24, 2003 at 01:23:32PM +0100, Adriano Galano wrote:
> If IPF support PA-RISC mapping is not easy to "port" the PA/RISC Linux,
> excluding architectural changes in the chipset or booting process?

Why would you want to?  ia64 already has its own perfectly good Linux port.

> How HP/UX v 11.6 could be offer compatibility between PA/RISC and Itanium 2
> systems?

That's `11i v1.6'.  Quoting from
http://www.hp.com/products1/unix/operating/choice/hp-ux11i_details.html

	PA-RISC binary compatibility

  HP-UX 11i version 1.6 includes the Aries dynamic code translation
  technology as an integrated component. Aries is built on the close
  relationship between the PA-RISC and Intel Itanium instruction sets
  and provides binary compatibility for PA-RISC binaries on the Itanium
  processor family. Aries can be used where performance is not critical
  or where it is not possible to create a native Itanium processor
  family binary.

> How "exact" is the PA-RISC mapping on the IA-64 core?

Not particularly close.  If you look at the assembly language level,
there's a lot of similarities, but there's a lot of differences too.

-- 
"It's not Hollywood.  War is real, war is primarily not about defeat or
victory, it is about death.  I've seen thousands and thousands of dead bodies.
Do you think I want to have an academic debate on this subject?" -- Robert Fisk

Re: [Linux-ia64] Linux, Itanium and PA/RISC

[David Mosberger]

>>>>> On Mon, 24 Mar 2003 12:10:37 +0000, Matthew Wilcox <willy@debian.org> said:

  Matthew> On Mon, Mar 24, 2003 at 11:41:18AM +0100, Adriano Galano
  Matthew> wrote:
  >> Hi all:

  >> I read that IA-64 support PA-RISC instruction mapping. That's
  >> mean that I can use Linux for PA/RISC
  >> (http://www.parisc-linux.org/) in a Itanium 2 computer?

  Matthew> No.  You certainly can't run a PA-RISC kernel on an IA64
  Matthew> box, just like you can't run an x86 kernel on an ia64 box.

Ugh, that's not strictly true.  You definitely can boot x86 linux and
windows 98 on Itanium.  I believe the same is true for Itanium 2 if
you have Intel's firmware, though I have never tried that myself.

	--david