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From: "J. Mayer" <l_indien@magic.fr>
To: qemu-devel@nongnu.org
Cc: TristanGingold <gingold@adacore.com>
Subject: Re: [Qemu-devel] Removal of some target CPU macros
Date: Thu, 08 Nov 2007 21:09:22 +0100	[thread overview]
Message-ID: <1194552562.21588.36.camel@rapid> (raw)
In-Reply-To: <6FED2620-5A45-4C4F-8AA5-C509BC2323D7@adacore.com>


On Thu, 2007-11-08 at 14:09 +0100, Tristan Gingold wrote:
> Two side comments:

Hi,

> > Note that most (all ?) embedded Freescale PowerPC microcontrollers
> > implement those extensions and that some ones are greatly interrested
> > with having an usable emulation avaible for those CPUs.
> 
> Has anyone started to implement spe ?

Large parts of the SPE extensions are implemented, most fixed-point
operations (but the multiply and add family) and I think almost all
floating-point operations (the flags are not properly emulated, for
now). But there's a lack of a CPU model that would really use it. It
could be made available very easily for a test CPU for user-mode only,
as it is now. The MMU model used on Freescale cores is not implemented
yet, then the full-system emulation would not be possible for now.

> > - someone provide an open-source hypervisor, compatible with the ones
> > used on real machines, that would allow at least Linux to be able  
> > to run
> > on a CPU with hypervisor mode available.
> 
> Does xen/ppc satisfy your requirement ?
> Maybe Hollis will comment.

I don't know really. I guess it may do for the more urgent need which is
to have a  fully "transparent" hypervisor that would enable the OS to
access all resources. I won't bet it could be a replacement for IBM
hypervisor software as the full specifications of this software have
still not be fully released (the PPAR document, which describes the
whole hypervisor features is still a draft).
But it's a good idea, I may take a look of what it could provide.

-- 
J. Mayer <l_indien@magic.fr>
Never organized

  reply	other threads:[~2007-11-08 20:09 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-11-07 18:32 [Qemu-devel] Removal of some target CPU macros Fabrice Bellard
2007-11-07 19:16 ` Jocelyn Mayer
2007-11-07 21:55   ` Fabrice Bellard
2007-11-07 22:28     ` J. Mayer
2007-11-07 22:55       ` Fabrice Bellard
2007-11-07 23:12         ` Bernhard Fischer
2007-11-07 23:36           ` Paul Brook
     [not found]       ` <200711072247.53354.paul@codesourcery.com>
2007-11-07 23:06         ` J. Mayer
2007-11-07 23:37           ` Paul Brook
2007-11-09 22:04             ` J. Mayer
2007-11-08 13:09   ` Tristan Gingold
2007-11-08 20:09     ` J. Mayer [this message]
2007-11-07 22:40 ` Thiemo Seufer

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