From: Thomas Huth <thuth@redhat.com>
To: Michael Ellerman <mpe@ellerman.id.au>,
Paul Mackerras <paulus@samba.org>,
linuxppc-dev@lists.ozlabs.org
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>,
kvm-ppc@vger.kernel.org
Subject: Re: [PATCH] powerpc/pseries: Add POWER8NVL support to ibm,client-architecture-support call
Date: Tue, 31 May 2016 12:19:53 +0200 [thread overview]
Message-ID: <574D6549.3050903@redhat.com> (raw)
In-Reply-To: <1464689047.23025.1.camel@ellerman.id.au>
On 31.05.2016 12:04, Michael Ellerman wrote:
> On Tue, 2016-05-31 at 07:51 +0200, Thomas Huth wrote:
>
>> If we do not provide the PVR for POWER8NVL, a guest on this
>> system currently ends up in PowerISA 2.06 compatibility mode on
>> KVM, since QEMU does not provide a generic PowerISA 2.07 mode yet.
>> So some new instructions from POWER8 (like "mtvsrd") get disabled
>> for the guest, resulting in crashes when using code compiled
>> explicitly for POWER8 (e.g. with the "-mcpu=power8" option of GCC).
>>
>> Signed-off-by: Thomas Huth <thuth@redhat.com>
>
> So this should say:
>
> Fixes: ddee09c099c3 ("powerpc: Add PVR for POWER8NVL processor")
>
> And therefore:
>
> Cc: stable@vger.kernel.org # v4.0+
>
> Am I right?
Right. (At least for virtualized systems ... for bare-metal systems,
that original patch was enough). So shall I resubmit my patch with these
two lines, or could you add them when you pick this patch up?
Thomas
next prev parent reply other threads:[~2016-05-31 10:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-31 5:51 [PATCH] powerpc/pseries: Add POWER8NVL support to ibm, client-architecture-support call Thomas Huth
2016-05-31 10:04 ` [PATCH] powerpc/pseries: Add POWER8NVL support to ibm,client-architecture-support call Michael Ellerman
2016-05-31 10:19 ` Thomas Huth [this message]
2016-05-31 10:32 ` Michael Ellerman
2016-06-08 1:14 ` Balbir Singh
2016-06-08 10:44 ` Michael Ellerman
2016-06-08 11:17 ` Thomas Huth
2016-06-08 11:27 ` Michael Ellerman
2016-06-08 10:58 ` Thomas Huth
2016-06-06 0:17 ` powerpc/pseries: Add POWER8NVL support to ibm, client-architecture-support call Michael Ellerman
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