From: David Gibson <david@gibson.dropbear.id.au>
To: BALATON Zoltan <balaton@eik.bme.hu>
Cc: lvivier@redhat.com, Greg Kurz <groug@kaod.org>,
qemu-devel@nongnu.org, qemu-ppc@nongnu.org, clg@kaod.org,
paulus@samba.org, philmd@redhat.com
Subject: Re: [PATCH v2 02/10] ppc: Remove stub of PPC970 HID4 implementation
Date: Wed, 8 Jan 2020 12:09:08 +1100 [thread overview]
Message-ID: <20200108010908.GK2137@umbus.fritz.box> (raw)
In-Reply-To: <alpine.BSF.2.21.99999.352.2001071900510.93471@zero.eik.bme.hu>
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On Tue, Jan 07, 2020 at 07:05:41PM +0100, BALATON Zoltan wrote:
> On Tue, 7 Jan 2020, Greg Kurz wrote:
> > On Tue, 7 Jan 2020 18:32:15 +0100
> > Greg Kurz <groug@kaod.org> wrote:
> >
> > > On Tue, 7 Jan 2020 15:48:19 +1100
> > > David Gibson <david@gibson.dropbear.id.au> 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 ?
>
> By the way, do you know if this strapping is hardware or software based? So
> is it the firmware that disables it on Apple hardware or is it some CPU pin
> connected somewhere on the motherboard or it's within the CPU and cannot be
> changed? I wonder if it's theoretically possible to re-enable it on an Apple
> G5 or we would likely never see a PowerPC 970 with HV enabled?
I don't know, sorry.
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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next prev parent reply other threads:[~2020-01-08 2:06 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-07 4:48 [PATCH v2 00/10] target/ppc: Correct some errors with real mode handling David Gibson
2020-01-07 4:48 ` [PATCH v2 01/10] ppc: Drop PPC_EMULATE_32BITS_HYPV stub David Gibson
2020-01-07 12:52 ` Cédric Le Goater
2020-01-07 17:05 ` Greg Kurz
2020-01-07 4:48 ` [PATCH v2 02/10] ppc: Remove stub of PPC970 HID4 implementation David Gibson
2020-01-07 12:51 ` Cédric Le Goater
2020-01-07 17:32 ` Greg Kurz
2020-01-07 17:36 ` Greg Kurz
2020-01-07 18:05 ` BALATON Zoltan
2020-01-08 1:09 ` David Gibson [this message]
2020-01-08 8:29 ` Thomas Huth
2020-01-08 1:08 ` David Gibson
2020-01-08 8:11 ` Greg Kurz
2020-01-08 2:17 ` Paul Mackerras
2020-01-08 13:35 ` Greg Kurz
2020-01-07 4:48 ` [PATCH v2 03/10] target/ppc: Correct handling of real mode accesses with vhyp on hash MMU David Gibson
2020-01-14 10:22 ` Cédric Le Goater
2020-01-07 4:48 ` [PATCH v2 04/10] target/ppc: Introduce ppc_hash64_use_vrma() helper David Gibson
2020-01-07 13:24 ` Cédric Le Goater
2020-01-07 4:48 ` [PATCH v2 05/10] spapr, ppc: Remove VPM0/RMLS hacks for POWER9 David Gibson
2020-01-07 14:35 ` Cédric Le Goater
2020-01-09 7:33 ` Alexey Kardashevskiy
2020-01-13 3:38 ` David Gibson
2020-01-07 4:48 ` [PATCH v2 06/10] target/ppc: Remove RMOR register from POWER9 & POWER10 David Gibson
2020-01-07 13:39 ` Cédric Le Goater
2020-01-07 4:48 ` [PATCH v2 07/10] target/ppc: Use class fields to simplify LPCR masking David Gibson
2020-01-07 13:41 ` Cédric Le Goater
2020-01-07 4:48 ` [PATCH v2 08/10] target/ppc: Streamline calculation of RMA limit from LPCR[RMLS] David Gibson
2020-01-07 13:43 ` Cédric Le Goater
2020-01-07 4:48 ` [PATCH v2 09/10] target/ppc: Correct RMLS table David Gibson
2020-01-07 14:21 ` Cédric Le Goater
2020-01-08 1:06 ` David Gibson
2020-01-08 8:29 ` Cédric Le Goater
2020-01-09 7:46 ` Alexey Kardashevskiy
2020-01-13 3:46 ` David Gibson
2020-01-08 8:28 ` Cédric Le Goater
2020-01-07 4:48 ` [PATCH v2 10/10] target/ppc: Only calculate RMLS derived RMA limit on demand David Gibson
2020-01-08 8:31 ` Cédric Le Goater
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