From: David Gibson <david@gibson.dropbear.id.au>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: "Cédric Le Goater" <clg@kaod.org>,
qemu-ppc@nongnu.org, qemu-devel@nongnu.org,
"Nikunj A Dadhania" <nikunj@linux.vnet.ibm.com>,
"Alexey Kardashevskiy" <aik@ozlabs.ru>
Subject: Re: [Qemu-devel] [PATCH 1/2] spapr/rtas: disable the decrementer interrupt when a CPU is unplugged
Date: Fri, 6 Oct 2017 21:10:10 +1100 [thread overview]
Message-ID: <20171006101010.GK10961@umbus.fritz.box> (raw)
In-Reply-To: <1507283610.25065.148.camel@kernel.crashing.org>
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On Fri, Oct 06, 2017 at 11:53:30AM +0200, Benjamin Herrenschmidt wrote:
> On Fri, 2017-10-06 at 20:07 +1100, David Gibson wrote:
> > Hm. Checking mmu_model doesn't seem right to me. I mean, it'll get
> > the right answer in practice, but the LPCR programming has nothing
> > whatsoever to do with the MMU.
> >
> > I think explicitly checking if cpu_ is a POWER9 instance with
> > object_dynamic_cast would be a better option.
>
> Best is ARCH 300 ... do we hvae arch versions outside of MMU model
> these days ?
Not that I could spot easily. Apart from implicitly in the cpu
family.
--
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:[~2017-10-06 10:19 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-05 16:49 [Qemu-devel] [PATCH 0/2] disable the decrementer interrupt when a CPU is unplugged Cédric Le Goater
2017-10-05 16:49 ` [Qemu-devel] [PATCH 1/2] spapr/rtas: " Cédric Le Goater
2017-10-06 9:07 ` David Gibson
2017-10-06 9:53 ` Benjamin Herrenschmidt
2017-10-06 10:10 ` David Gibson [this message]
2017-10-09 14:28 ` Cédric Le Goater
2017-10-06 21:15 ` Cédric Le Goater
2017-10-07 5:16 ` David Gibson
2017-10-05 16:49 ` [Qemu-devel] [PATCH 2/2] spapr/rtas: do not reset the MSR in stop-self command Cédric Le Goater
2017-10-06 9:08 ` David Gibson
2017-10-06 6:10 ` [Qemu-devel] [PATCH 0/2] disable the decrementer interrupt when a CPU is unplugged Nikunj A Dadhania
2017-10-06 6:14 ` Cédric Le Goater
2017-10-06 7:46 ` Benjamin Herrenschmidt
2017-10-06 7:53 ` Cédric Le Goater
2017-10-06 8:11 ` Nikunj A Dadhania
2017-10-06 9:09 ` David Gibson
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