From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Scott Wood <scottwood@freescale.com>
Cc: Matthew McClintock <msm@freescale.com>,
kumar.gala@freescale.com, Timur Tabi <timur@freescale.com>,
linuxppc-dev@ozlabs.org
Subject: Re: [PATCH] powerpc/85xx: disable timebase synchronization under the hypervisor
Date: Wed, 15 Jun 2011 11:58:11 +1000 [thread overview]
Message-ID: <1308103091.2635.13.camel@pasglop> (raw)
In-Reply-To: <20110614182517.776d7e77@schlenkerla.am.freescale.net>
On Tue, 2011-06-14 at 18:25 -0500, Scott Wood wrote:
> On Tue, 14 Jun 2011 18:15:26 -0500
> Timur Tabi <timur@freescale.com> wrote:
>
> > Scott Wood wrote:
> > > FWIW, it's not supported under KVM either -- though we don't support an SMP
> > > guest under KVM yet, and KVM silently ignores it rather than logs errors as
> > > the FSL HV does.
> >
> > Does KVM set the root compatible to "fsl,P4080DS-hv"?
>
> No, Qemu/KVM like to pretend they're fully emulating concrete hardware,
> even though there's stuff missing.
>
> The only upstream e500 KVM platform is currently mpc8544ds.
>
> For now, there's no SMP KVM guest support. Maybe kexec can be fixed to not
> hard-reset the core by the time that changes. :-)
We might want to generically have a CPU feature bit indicating we are
running in guest vs. HV mode. I know Paulus is planning to introduce one
so you may want to sync with him.
Cheers,
Ben.
next prev parent reply other threads:[~2011-06-15 1:58 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-14 23:04 [PATCH] powerpc/85xx: disable timebase synchronization under the hypervisor Timur Tabi
2011-06-14 23:14 ` Scott Wood
2011-06-14 23:15 ` Timur Tabi
2011-06-14 23:25 ` Scott Wood
2011-06-15 1:58 ` Benjamin Herrenschmidt [this message]
2011-06-15 2:10 ` Tabi Timur-B04825
2011-06-15 2:33 ` Benjamin Herrenschmidt
2011-06-22 11:44 ` Kumar Gala
2011-06-22 14:55 ` Timur Tabi
2011-06-23 17:22 ` Scott Wood
2011-06-23 17:33 ` Timur Tabi
2011-06-23 17:48 ` Scott Wood
2011-06-24 2:36 ` Segher Boessenkool
2011-06-24 2:38 ` Tabi Timur-B04825
2011-06-24 3:50 ` Segher Boessenkool
2011-06-24 15:16 ` Scott Wood
2011-06-24 23:36 ` Benjamin Herrenschmidt
2011-06-27 13:35 ` Kumar Gala
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