From: Michael Ellerman <mpe@ellerman.id.au>
To: Thomas Huth <thuth@redhat.com>, 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 20:04:07 +1000 [thread overview]
Message-ID: <1464689047.23025.1.camel@ellerman.id.au> (raw)
In-Reply-To: <1464673877-30659-1-git-send-email-thuth@redhat.com>
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?
cheers
> diff --git a/arch/powerpc/kernel/prom_init.c b/arch/powerpc/kernel/prom_init.c
> index da51925..ccd2037 100644
> --- a/arch/powerpc/kernel/prom_init.c
> +++ b/arch/powerpc/kernel/prom_init.c
> @@ -656,6 +656,7 @@ unsigned char ibm_architecture_vec[] = {
> W(0xffff0000), W(0x003e0000), /* POWER6 */
> W(0xffff0000), W(0x003f0000), /* POWER7 */
> W(0xffff0000), W(0x004b0000), /* POWER8E */
> + W(0xffff0000), W(0x004c0000), /* POWER8NVL */
> W(0xffff0000), W(0x004d0000), /* POWER8 */
> W(0xffffffff), W(0x0f000004), /* all 2.07-compliant */
> W(0xffffffff), W(0x0f000003), /* all 2.06-compliant */
next prev parent reply other threads:[~2016-05-31 10:04 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 ` Michael Ellerman [this message]
2016-05-31 10:19 ` [PATCH] powerpc/pseries: Add POWER8NVL support to ibm,client-architecture-support call Thomas Huth
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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