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Re: [Qemu-devel] [PATCH] target-mips: use CP0EnLo_XI instead of magic nu


From: Maciej W. Rozycki
Subject: Re: [Qemu-devel] [PATCH] target-mips: use CP0EnLo_XI instead of magic number
Date: Thu, 29 Jan 2015 11:08:18 +0000 (GMT)
User-agent: Alpine 2.11 (LFD 23 2013-08-11)

On Thu, 29 Jan 2015, Leon Alrae wrote:

> >  And do we want to have CP0C3_LPA set in the few templates that do in the 
> > first place?  AFAICT we don't really implement LPA so this bit will 
> > confuse software.  Of course implementing it would be another option, not 
> > very complicated AFAICS, and if we can track the requirement to update 
> > MFC0 at that time, then the clean-up I mentioned above can be deferred 
> > until then.
> 
> In general I don't think it's a good idea to indicate presence of a
> feature in a CPU config if it isn't implemented at all in QEMU -- as you
> said, it will confuse software. As far as LPA goes I've got already an
> implementation of it (and XPA as well) which I haven't submitted
> upstream yet. I'll make sure it contains the change you suggested.

 Great, I'll leave it to you to sort out then.  Thanks!

  Maciej



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