[Skiboot] [PATCH skiboot] cpufeatures: Always advertise POWER8NVL as DD2
stewart at linux.ibm.com
Mon Feb 11 17:51:16 AEDT 2019
Alexey Kardashevskiy <aik at ozlabs.ru> writes:
> Despite the major version of PVR being 1 (0x004c0100) for POWER8NVL,
> these chips are functionally equalent to P8/P8E DD2 levels.
> This advertises POWER8NVL as DD2. As the result, skiboot adds
> ibm,powerpc-cpu-features/processor-control-facility for such CPUs and
> the linux kernel can use hypervisor doorbell messages to wake secondary
> threads; otherwise "KVM: CPU %d seems to be stuck" would appear because
> of missing LPCR_PECEDH.
> Fixes: 7f4c8e8ce0b "dt: add /cpus/ibm, powerpc-cpu-features device tree bindings"
> Signed-off-by: Alexey Kardashevskiy <aik at ozlabs.ru>
> This was tested on top of reverted bd9839684d482417e8c60449592f4 as
> it breaks the POWER8NVL (garrison) machines:
Thanks for this. I've merged to master as of
17975a6e645768c4651199055052a13858db6506 and also back into 6.0.x and
the (newly created) 6.2.x as of 84baad3ee52fc287f0bf6df5c5ebfbd3b5f59aa8
and 64627c85e648991b7a53a1de47d7d602194f80e1 respectively.
OPAL Architect, IBM.
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