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Re: [PATCH v2 02/10] ppc: Remove stub of PPC970 HID4 implementation


From: Paul Mackerras
Subject: Re: [PATCH v2 02/10] ppc: Remove stub of PPC970 HID4 implementation
Date: Wed, 8 Jan 2020 13:17:37 +1100
User-agent: Mutt/1.10.1 (2018-07-13)

On Tue, Jan 07, 2020 at 06:36:38PM +0100, Greg Kurz wrote:
> On Tue, 7 Jan 2020 18:32:15 +0100
> Greg Kurz <address@hidden> wrote:
> 
> > On Tue,  7 Jan 2020 15:48:19 +1100
> > David Gibson <address@hidden> wrote:
> > 
> > > The PowerPC 970 CPU was a cut-down POWER4, which had hypervisor 
> > > capability.
> > > However, it can be (and often was) strapped into "Apple mode", where the
> > > hypervisor capabilities were disabled (essentially putting it always in
> > > hypervisor mode).
> 
> Isn't it supervisor mode instead of hypervisor mode ?

No, it's hypervisor mode.  MSR[HV] always reads as 1.

Paul.



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