From: Fabiano Rosas <farosas@linux.ibm.com>
To: qemu-devel@nongnu.org
Cc: qemu-ppc@nongnu.org, david@gibson.dropbear.id.au
Subject: [PATCH 0/2] Fix for compat mode in P9 < 2.2
Date: Tue, 4 May 2021 21:11:28 -0300 [thread overview]
Message-ID: <20210505001130.3999968-1-farosas@linux.ibm.com> (raw)
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.
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(-)
--
2.29.2
next reply other threads:[~2021-05-05 0:15 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-05 0:11 Fabiano Rosas [this message]
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 ` [PATCH 0/2] Fix for compat mode in P9 < 2.2 David Gibson
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