[PATCH] powerpc/pseries: Add POWER8NVL support to ibm,client-architecture-support call

[Michael Ellerman]

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 at redhat.com>

So this should say:

  Fixes: ddee09c099c3 ("powerpc: Add PVR for POWER8NVL processor")

And therefore:

  Cc: stable at 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 */