[PATCH 0/2] spapr: Fix support of POWER5+ processors

[Cédric Le Goater]

Hello,

Grab the images under : 

  
https://github.com/legoater/qemu-ppc-boot/tree/main/buildroot/qemu_ppc64_pseries_p5p-2021.11-730-g4f325ce788-20220104

and run with :

  qemu-system-ppc64 -M pseries -cpu POWER5+ -m 1G -smp 2 -kernel ./vmlinux 
-append "root=/dev/sda" -drive file=./rootfs.ext2,if=scsi,index=0,format=raw  
-device spapr-vlan,netdev=net0 -netdev user,id=net0 -serial mon:stdio 
-nographic -nodefaults

CPU 970, 970MP are also well supported. 

Virtio devices and USB should be avoided because SLOF would use a
'stdbrx' instruction (cpu_to_le64 helper) which is invalid under
POWER5+ and 970 CPUs. SLOF needs to be compiled with -mcpu=power5 to
fix this issue.

Thanks,

C. 

Cédric Le Goater (2):
  target/ppc: Add popcntb instruction to POWER5+ processors
  spapr: Fix support of POWER5+ processors

 hw/ppc/spapr.c        | 10 ++++++----
 target/ppc/cpu_init.c |  1 +
 2 files changed, 7 insertions(+), 4 deletions(-)

-- 
2.31.1