From: Alexander Graf <agraf@suse.de>
To: Paul Mackerras <paulus@samba.org>
Cc: linuxppc-dev@ozlabs.org, kvm-ppc@vger.kernel.org, kvm@vger.kernel.org
Subject: Re: [PATCH v2 0/12] Hypervisor-mode KVM on POWER7
Date: Tue, 31 May 2011 14:50:20 +0200 [thread overview]
Message-ID: <A857E6BF-D88C-46E3-BF09-268A43B7F7CF@suse.de> (raw)
In-Reply-To: <20110531123521.GL2505@brick.ozlabs.ibm.com>
On 31.05.2011, at 14:35, Paul Mackerras wrote:
> On Tue, May 31, 2011 at 12:40:31PM +0200, Alexander Graf wrote:
>=20
>> Thinking about the testability of this a bit more ... how much
>> effort would it be to get this code running on a 970MP with SLOF?
>> There should only be a few POWER7 specific pieces, right?
>=20
> Do you have a 970MP that has a usable hypervisor mode, i.e. not an
> Apple machine? The 970s in Apple machines have the HV hard-wired to
> 1, which means they do have a hypervisor mode but it isn't any use.
>=20
> If you do have such a machine, then we would have to look at some
> details like the instruction sequence for the partition switch, and
> make sure we don't try to use SMT4 mode. Also, I believe we will have
> to flush the TLB on partition switches, since Power processors prior
> to POWER7 didn't tag the TLB entries with the partition ID.
>=20
> So it should be quite feasible if you have a non-Apple machine.
> I will check whether the 970MP machines that Terrasoft were
> distributing would be suitable. We have one of them in the lab.
That's the one I was thinking of and yes, I have one available. That way =
I could test 99% of your code, you don't have to release hardware, and =
everyone's happy :).
Alex
next prev parent reply other threads:[~2011-05-31 12:50 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-31 6:40 [PATCH v2 0/12] Hypervisor-mode KVM on POWER7 Paul Mackerras
2011-05-31 6:42 ` [PATCH v2 01/12] kvm/powerpc: Move fields between struct kvm_vcpu_arch and kvmppc_vcpu_book3s Paul Mackerras
2011-05-31 6:46 ` [PATCH v2 02/12] kvm/powerpc: Split out code from book3s.c into book3s_pr.c Paul Mackerras
2011-05-31 10:15 ` [PATCH v2 03/12] powerpc, kvm: Rework KVM checks in first-level interrupt handlers Paul Mackerras
2011-05-31 10:16 ` [PATCH v2 04/12] kvm/powerpc: Deliver program interrupts right away instead of queueing them Paul Mackerras
2011-05-31 10:16 ` [PATCH v2 05/12] kvm/powerpc: Pass init/destroy vm and prepare/commit memory region ops down Paul Mackerras
2011-05-31 10:17 ` [PATCH v2 06/12] kvm/powerpc: Move guest enter/exit down into subarch-specific code Paul Mackerras
2011-05-31 10:17 ` [PATCH v2 07/12] powerpc: Set up LPCR for running guest partitions Paul Mackerras
2011-05-31 10:18 ` [PATCH v2 08/12] kvm/powerpc: Split host-state fields out of kvmppc_book3s_shadow_vcpu Paul Mackerras
2011-05-31 10:19 ` [PATCH v2 09/12] kvm/powerpc: Add support for Book3S processors in hypervisor mode Paul Mackerras
2011-05-31 10:19 ` [PATCH v2 10/12] kvm/powerpc: Handle some PAPR hcalls in the kernel Paul Mackerras
2011-05-31 10:20 ` [PATCH v2 11/12] kvm/powerpc: Accelerate H_PUT_TCE by implementing it in real mode Paul Mackerras
2011-05-31 10:21 ` [PATCH v2 12/12] kvm/powerpc: Allow book3s_hv guests to use SMT processor modes Paul Mackerras
2011-05-31 10:40 ` [PATCH v2 0/12] Hypervisor-mode KVM on POWER7 Alexander Graf
2011-05-31 12:35 ` Paul Mackerras
2011-05-31 12:50 ` Alexander Graf [this message]
2011-05-31 19:59 ` Jimi Xenidis
2011-06-01 5:20 ` Paul Mackerras
2011-06-01 5:31 ` Olof Johansson
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