From: Scott Wood <scottwood@freescale.com>
To: Alexander Graf <agraf@suse.de>
Cc: "<kvm-ppc@vger.kernel.org>" <kvm-ppc@vger.kernel.org>,
"<kvm@vger.kernel.org>" <kvm@vger.kernel.org>
Subject: Re: [PATCH] KVM: PPC: e500: Don't hardcode PIR=0
Date: Fri, 02 Sep 2011 18:14:55 +0000 [thread overview]
Message-ID: <4E611D1F.9010409@freescale.com> (raw)
In-Reply-To: <9E450E07-D406-4666-AE9C-F879944EDDB8@suse.de>
On 09/02/2011 10:12 AM, Alexander Graf wrote:
>
> Am 02.09.2011 um 01:08 schrieb Scott Wood <scottwood@freescale.com>:
>
>> Signed-off-by: Scott Wood <scottwood@freescale.com>
>
> Patch description missing.
It's not missing, it's just brief. :-)
I suppose you could add "The hardcoded behavior prevents SMP support.
QEMU shall specify the vcpu's PIR as the vcpu id".
> Also, since pir = vcpu_id now, can't we just remove pir?
From sregs? Is that worth the compatibility breakage? We could define
a new bit for ARCH206 without PIR, but older QEMU would then not see the
other ARCH206 stuff.
-Scott
WARNING: multiple messages have this Message-ID (diff)
From: Scott Wood <scottwood@freescale.com>
To: Alexander Graf <agraf@suse.de>
Cc: "<kvm-ppc@vger.kernel.org>" <kvm-ppc@vger.kernel.org>,
"<kvm@vger.kernel.org>" <kvm@vger.kernel.org>
Subject: Re: [PATCH] KVM: PPC: e500: Don't hardcode PIR=0
Date: Fri, 2 Sep 2011 13:14:55 -0500 [thread overview]
Message-ID: <4E611D1F.9010409@freescale.com> (raw)
In-Reply-To: <9E450E07-D406-4666-AE9C-F879944EDDB8@suse.de>
On 09/02/2011 10:12 AM, Alexander Graf wrote:
>
> Am 02.09.2011 um 01:08 schrieb Scott Wood <scottwood@freescale.com>:
>
>> Signed-off-by: Scott Wood <scottwood@freescale.com>
>
> Patch description missing.
It's not missing, it's just brief. :-)
I suppose you could add "The hardcoded behavior prevents SMP support.
QEMU shall specify the vcpu's PIR as the vcpu id".
> Also, since pir == vcpu_id now, can't we just remove pir?
>From sregs? Is that worth the compatibility breakage? We could define
a new bit for ARCH206 without PIR, but older QEMU would then not see the
other ARCH206 stuff.
-Scott
next prev parent reply other threads:[~2011-09-02 18:14 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-09-01 23:08 [PATCH] KVM: PPC: e500: Don't hardcode PIR=0 Scott Wood
2011-09-01 23:08 ` Scott Wood
2011-09-02 1:23 ` [linuxppc-release] " Tabi Timur-B04825
2011-09-02 1:23 ` Tabi Timur-B04825
2011-09-02 15:12 ` Alexander Graf
2011-09-02 15:12 ` Alexander Graf
2011-09-02 18:14 ` Scott Wood [this message]
2011-09-02 18:14 ` Scott Wood
2011-09-02 19:23 ` Alexander Graf
2011-09-02 19:23 ` Alexander Graf
2011-09-02 19:35 ` Scott Wood
2011-09-02 19:35 ` Scott Wood
2011-09-02 19:46 ` Alexander Graf
2011-09-02 19:46 ` Alexander Graf
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