From: Alexander Graf <agraf@suse.de>
To: Avi Kivity <avi@redhat.com>
Cc: linuxppc-dev@ozlabs.org, paulus@samba.org, kvm@vger.kernel.org,
kvm-ppc@vger.kernel.org
Subject: Re: [PATCH 00/10] PAPR virtualization on PR KVM
Date: Tue, 09 Aug 2011 18:49:35 +0200 [thread overview]
Message-ID: <4E41651F.7010508@suse.de> (raw)
In-Reply-To: <4E41638A.2010707@redhat.com>
On 08/09/2011 06:42 PM, Avi Kivity wrote:
> On 08/09/2011 07:31 PM, Alexander Graf wrote:
>> In KVM for Book3S PPC we currently have 2 implementations. There
>> is the PR based implementation which works on any POWER system
>> you pass in and the super fast HV implementation which requires
>> libre firmware (so almost nobody can use it).
>
> Did you mean, non-libre?
No, I did mean libre :). Usually firmware on IBM POWER systems already
uses the hypervisor mode for itself, so we can't leverage it. The only
system that is publicly available and can run HV KVM is the YDL
PowerStation which is running SLOF, an open source firmware.
>
>>
>> Currently, the two target two different machine types, with PR KVM
>> being used for bare metal system virtualization, while the HV KVM
>> is used to virtualize PAPR.
>>
>> In an effort to make things more cozy and transparent to the user,
>> this patch set implements PAPR capabilities to the PR KVM side, so
>> a user doesn't have to worry what the respective kernel module
>> supports. Any machine he's virtualizing "just works".
>>
>
> Nice. I went though it and nothing shouted "I'm wrong, kill me
> please", though I don't claim to understand more than 5% of it.
Heh :). The thing giving me the most headaches here is the ENABLE_CAP
part on PAPR. I'd love to have a more flexible framework there that can
configure kvm into the right mode of operation completely, so we get the
chance of passing back "Sorry, that mode doesn't work for me" at the end
of the day.
But I guess we can just do that with the cap enablings too. It's just
slightly more icky.
Alex
next prev parent reply other threads:[~2011-08-09 16:49 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-09 16:31 [PATCH 00/10] PAPR virtualization on PR KVM Alexander Graf
2011-08-09 16:31 ` [PATCH 01/10] KVM: PPC: move compute_tlbie_rb to book3s common header Alexander Graf
2011-11-08 17:08 ` [PATCH] KVM: PPC: move compute_tlbie_rb to book3s_64 " Andreas Schwab
2011-11-11 16:03 ` Alexander Graf
2011-08-09 16:31 ` [PATCH 02/10] KVM: PPC: Add papr_enabled flag Alexander Graf
2011-08-09 16:31 ` [PATCH 03/10] KVM: PPC: Check privilege level on SPRs Alexander Graf
2011-08-09 16:31 ` [PATCH 04/10] KVM: PPC: Interpret SDR1 as HVA in PAPR mode Alexander Graf
2011-08-09 16:31 ` [PATCH 05/10] KVM: PPC: Read out syscall instruction on trap Alexander Graf
2011-08-09 16:31 ` [PATCH 06/10] KVM: PPC: Add support for explicit HIOR setting Alexander Graf
2011-08-09 16:31 ` [PATCH 07/10] KVM: PPC: Add PAPR hypercall code for PR mode Alexander Graf
2011-08-09 16:40 ` Avi Kivity
2011-08-09 16:46 ` Alexander Graf
2011-08-09 16:49 ` Avi Kivity
2011-08-09 16:51 ` Alexander Graf
2011-08-09 17:01 ` Avi Kivity
2011-08-09 22:02 ` Benjamin Herrenschmidt
2011-08-12 3:35 ` David Gibson
2011-08-12 5:38 ` Alexander Graf
2011-08-12 7:43 ` David Gibson
2011-08-12 8:09 ` Alexander Graf
2011-08-09 16:31 ` [PATCH 08/10] KVM: PPC: Stub emulate CFAR and PURR SPRs Alexander Graf
2011-08-09 16:31 ` [PATCH 09/10] KVM: PPC: Support SC1 hypercalls for PAPR in PR mode Alexander Graf
2011-08-12 3:33 ` David Gibson
2011-08-12 5:35 ` Alexander Graf
2011-08-12 7:43 ` David Gibson
2011-08-12 8:07 ` Alexander Graf
2011-11-08 17:17 ` [PATCH] KVM: PPC: protect use of kvmppc_h_pr Andreas Schwab
2011-11-11 16:03 ` Alexander Graf
2011-08-09 16:31 ` [PATCH 10/10] KVM: PPC: Enable the PAPR CAP for Book3S Alexander Graf
2011-08-10 4:42 ` Paul Mackerras
2011-08-10 7:59 ` Alexander Graf
2011-08-10 12:26 ` Paul Mackerras
2011-08-10 12:29 ` Alexander Graf
2011-08-09 16:42 ` [PATCH 00/10] PAPR virtualization on PR KVM Avi Kivity
2011-08-09 16:49 ` Alexander Graf [this message]
2011-08-10 12:31 ` [PATCH 11/10] KVM: PPC: Add sanity checking to vcpu_run Alexander Graf
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