From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Paolo Bonzini <pbonzini@redhat.com>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
Alexander Graf <agraf@suse.de>,
"qemu-devel@nongnu.org" <qemu-devel@nongnu.org>,
"qemu-ppc@nongnu.org" <qemu-ppc@nongnu.org>,
Paul Mackerras <paulus@samba.org>,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [PATCH] powerpc iommu: enable multiple TCE requests
Date: Tue, 20 Aug 2013 19:13:17 +1000 [thread overview]
Message-ID: <1376989997.25016.131.camel@pasglop> (raw)
In-Reply-To: <52133232.7010809@redhat.com>
On Tue, 2013-08-20 at 11:09 +0200, Paolo Bonzini wrote:
> > Sorry if I miss anything, but is not it what the patch already
> does? :)
>
> No, you need to expose multitce unconditionally in the device tree.
If I'm not mistaken the multitce kernel side patches are still not
upstream so I disagree. Exposing it will make Linux use it which means
that anything running on 3.10 or 3.11 will become very slow.
So no, multitce should not be exposed if KVM doesn't support it.
Cheers,
Ben.
next prev parent reply other threads:[~2013-08-20 9:13 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-07 8:08 [Qemu-devel] [PATCH] powerpc iommu: enable multiple TCE requests Alexey Kardashevskiy
2013-08-16 9:49 ` Alexey Kardashevskiy
2013-08-18 15:22 ` Paolo Bonzini
2013-08-19 7:30 ` Alexey Kardashevskiy
2013-08-19 8:01 ` Alexander Graf
2013-08-19 8:44 ` Alexey Kardashevskiy
2013-08-19 9:47 ` Paolo Bonzini
2013-08-20 1:36 ` Alexey Kardashevskiy
2013-08-20 6:55 ` Alexander Graf
2013-08-20 8:39 ` Paolo Bonzini
2013-08-20 8:49 ` Alexey Kardashevskiy
2013-08-20 9:09 ` Paolo Bonzini
2013-08-20 9:13 ` Benjamin Herrenschmidt [this message]
2013-08-20 9:15 ` Paolo Bonzini
2013-08-20 9:20 ` Benjamin Herrenschmidt
2013-08-20 9:22 ` Paolo Bonzini
2013-08-20 9:26 ` Benjamin Herrenschmidt
2013-08-20 10:14 ` Paolo Bonzini
2013-08-20 11:38 ` Benjamin Herrenschmidt
2013-08-21 7:11 ` Alexander Graf
2013-08-21 7:29 ` [Qemu-devel] [Qemu-ppc] " Alexander Graf
2013-08-16 13:15 ` [Qemu-devel] " Alexander Graf
2013-08-19 9:01 ` Alexey Kardashevskiy
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