debian/patches/riscv-on-ppc64-gcc15-121689.patch disables the Global
Common Subexpression Elimination (GCSE) optimization pass for function
riscv_pmu_icount_update_priv() (__attribute__((optimize("no-gcse")))).
@Michael
I would suggest to build without the patch and run
qemu-system-riscv64 -M virt -cpu rv64,h=off -nographic
on a ppc64el system. The RISC-V emulation should hang after OpenSBI
output. No QEMU error should be reported.
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https://bugs.launchpad.net/bugs/2120835
Title:
EDK2 tests for riscv emulation fail against qemu 10.1 on ppc64el
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