Hello Anushree,
On 6/23/23 13:09, Anushree Mathur wrote:
Hi everyone,
I was trying to boot rhel9.3 image with upstream qemu-system-ppc64 -smp 2
option and observed a segfault (qemu crash).
qemu command line used:
qemu-system-ppc64 -name Rhel9.3.ppc64le -smp 2 -m 16G -vga none -nographic
-machine pseries -cpu POWER10 -accel tcg -device virtio-scsi-pci -drive
file=/home/rh93.qcow2,if=none,format=qcow2,id=hd0 -device scsi-hd,drive=hd0
-boot c
After doing a git bisect, I found the first bad commit which introduced this
issue is below:
Could you please open a gitlab issue on QEMU project ?
https://gitlab.com/qemu-project/qemu/-/issues
Thanks,
C.
[qemu]# git bisect good
20b6643324a79860dcdfe811ffe4a79942bca21e is the first bad commit
commit 20b6643324a79860dcdfe811ffe4a79942bca21e
Author: Richard Henderson <richard.hender...@linaro.org>
Date: Mon Dec 5 17:45:02 2022 -0600
tcg/ppc: Reorg goto_tb implementation
The old ppc64 implementation replaces 2 or 4 insns, which leaves a race
condition in which a thread could be stopped at a PC in the middle of
the sequence, and when restarted does not see the complete address
computation and branches to nowhere.
The new implemetation replaces only one insn, swapping between
b <dest>
and
mtctr r31
falling through to a general-case indirect branch.
Reviewed-by: Alex Bennée <alex.ben...@linaro.org>
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
tcg/ppc/tcg-target.c.inc | 152 +++++++++++++----------------------------------
tcg/ppc/tcg-target.h | 3 +-
2 files changed, 41 insertions(+), 114 deletions(-)
[qemu]#
Can someone please take a look and suggest a fix to resolve this issue?
Thanks in advance.
Regards,
Anushree-Mathur
