From: David Gibson <david@gibson.dropbear.id.au>
To: Fabiano Rosas <farosas@linux.ibm.com>
Cc: qemu-ppc@nongnu.org, qemu-devel@nongnu.org
Subject: Re: [PATCH 0/2] Fix for compat mode in P9 < 2.2
Date: Wed, 5 May 2021 13:29:37 +1000 [thread overview]
Message-ID: <YJIRISyL/Nt24ITD@yekko> (raw)
In-Reply-To: <20210505001130.3999968-1-farosas@linux.ibm.com>
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On Tue, May 04, 2021 at 09:11:28PM -0300, Fabiano Rosas wrote:
> We dropped support in KVM for mixing MMU modes in machines that have
> old POWER9 processors which don't support mixing. As usual I forgot
> that compat mode exists:
>
> $ lscpu | grep pvr
> Model: 2.1 (pvr 004e 1201)
>
> $ ~/qemu-system-ppc64 -machine pseries,accel=kvm,max-cpu-compat=power8 ...
> error: kvm run failed Invalid argument
> NIP 0000000000000100 LR 0000000000000000 CTR 0000000000000000 XER 0000000000000000 CPU#0
> MSR 8000000000001000 HID0 0000000000000000 HF 8000000000000000 iidx 3 didx 3
> TB 00000000 00000000 DECR 0
> GPR00 0000000000000000 0000000000000000 0000000000000000 000000007ff00000
> GPR04 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> GPR08 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> GPR12 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> GPR16 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> GPR20 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> GPR24 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> GPR28 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> CR 00000000 [ - - - - - - - - ] RES ffffffffffffffff
> SRR0 0000000000000000 SRR1 0000000000000000 PVR 00000000004e1201 VRSAVE 0000000000000000
> SPRG0 0000000000000000 SPRG1 0000000000000000 SPRG2 0000000000000000 SPRG3 0000000000000000
> SPRG4 0000000000000000 SPRG5 0000000000000000 SPRG6 0000000000000000 SPRG7 0000000000000000
> HSRR0 0000000000000000 HSRR1 0000000000000000
> CFAR 0000000000000000
> LPCR 000000000004f01f
> PTCR 0000000000000000 DAR 0000000000000000 DSISR 0000000000000000
>
> This series reuses some code we already have to abort and print a
> proper message if the chosen MMU mode is not supported by the host.
Applied to ppc-for-6.1, thanks.
>
> Fabiano Rosas (2):
> hw/ppc/spapr.c: Extract MMU mode error reporting into a function
> hw/ppc/spapr.c: Make sure the host supports the selected MMU mode
>
> hw/ppc/spapr.c | 17 +++++++++++++++++
> hw/ppc/spapr_hcall.c | 14 ++------------
> include/hw/ppc/spapr.h | 1 +
> 3 files changed, 20 insertions(+), 12 deletions(-)
>
--
David Gibson | I'll have my music baroque, and my code
david AT gibson.dropbear.id.au | minimalist, thank you. NOT _the_ _other_
| _way_ _around_!
http://www.ozlabs.org/~dgibson
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prev parent reply other threads:[~2021-05-05 4:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 0:11 [PATCH 0/2] Fix for compat mode in P9 < 2.2 Fabiano Rosas
2021-05-05 0:11 ` [PATCH 1/2] hw/ppc/spapr.c: Extract MMU mode error reporting into a function Fabiano Rosas
2021-05-05 0:11 ` [PATCH 2/2] hw/ppc/spapr.c: Make sure the host supports the selected MMU mode Fabiano Rosas
2021-05-05 3:29 ` David Gibson [this message]
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