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Re: [Xen-ia64-devel] PATCH [resent**2]: FPH handling and cleanup

from [Tristan Gingold] [Permanent Link][Original]
To: "Magenheimer, Dan (HP Labs Fort Collins)" <dan.magenheimer@xxxxxx>, <xen-ia64-devel@xxxxxxxxxxxxxxxxxxx>, "Williamson, Alex (Linux Kernel Dev)" <alex.williamson@xxxxxx>
Subject: Re: [Xen-ia64-devel] PATCH [resent**2]: FPH handling and cleanup
From: Tristan Gingold <Tristan.Gingold@xxxxxxxx>
Date: Wed, 26 Apr 2006 09:46:33 +0200
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Le Mardi 25 Avril 2006 18:36, Magenheimer, Dan (HP Labs Fort Collins) a écrit 
:
> > After much testing, there is at least one path where saving
> > fp registers
> > faults (I got it with a 12 VCPUs domain).  I have to look more.
>
> I think Tony's program has already been on the list, but the
> following might be useful for Xen/ia64 FPU SMP and multi-domain
> stress testing.
Currently FP regs are always saved at context switch.  But DFH is now always 
reset.

But this stress programm will be useful for FP lazy save/restore.

Thanks,
Tristan.



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