Re: [kvm-unit-tests PATCH v2 0/6] powerpc improvements

[Aniket Sahu <asahu1x@linux.ibm.com>]

On Sun, 19 Jul 2026, Chinmay Rath wrote: > This series aims to add a 
couple of new powerpc tests and improve > the powerpc build structure. 
Tested on POWER10 (native KVM, ppc64le). Tested-by: Aniket Sahu 
<asahu1x@linux.ibm.com> --- Environment --- Host CPU : POWER10 
(architected), altivec supported Kernel : Linux 7.0.0-27-generic 
#27-Ubuntu SMP PREEMPT_DYNAMIC Thu Jun 18 19:14:19 UTC 2026 ppc64le 
GNU/Linux OS : Ubuntu 26.04 LTS (Resolute Raccoon) QEMU : 10.2.1 (Debian 
1:10.2.1+ds-1ubuntu3.1) Accelerator: KVM (-accel kvm -machine 
pseries,cap-ccf-assist=off) Branch : origin/ppc64 @ dde8f397 --- Test: 
pmu (Patch 1) --- $ ./run_tests.sh -a powerpc pmu PASS pmu (22 tests, 1 
known failure) Full log: timeout -k 1s --foreground 90s \ 
/usr/bin/qemu-system-ppc64 -nodefaults -accel kvm \ -machine 
pseries,cap-ccf-assist=off -bios powerpc/boot_rom.bin \ -display none 
-serial stdio -kernel powerpc/pmu.elf -smp 1 PASS: pmu: pmc56: PMC5 
zeroed PASS: pmu: pmc56: PMC6 zeroed PASS: pmu: pmc56: PMC5 frozen PASS: 
pmu: pmc56: PMC6 frozen PASS: pmu: pmc56: PMC5 counting PASS: pmu: 
pmc56: PMC6 counting PASS: pmu: pmc56: PMC6 ratio to reported clock 
frequency is 116% PASS: pmu: pmc56: PMC5 counts instructions precisely 
900 PASS: pmu: pmc56: PMC5 counts instructions exactly 21 PASS: pmu: 
pmc56: PMC5 counts instructions with branch 21 PASS: pmu: pmc56: PMC5 
counts instructions wth conditional branch 24 PASS: pmu: pmc56: PMC5 
counts instructions with illegal instruction PASS: pmu: pmc56: PMC5 
counts instructions with fault PASS: pmu: pmc56: PMC5 counts 
instructions with syscall PASS: pmu: pmc56: PMC5 counts instructions 
with rfid 2 PASS: pmu: pmc56: PMC5 counts instructions with ldat PASS: 
pmu: pmi: PMAO caused interrupt PASS: pmu: bhrb: BHRB is frozen PASS: 
pmu: bhrb: BHRB has been written KFAIL: pmu: bhrb: BHRB has written 8 
entries PASS: pmu: bhrb: BHRB has written 4 entries PASS: pmu: bhrb: 
correct conditional branch address SUMMARY: 22 tests, 1 known failure 
EXIT: STATUS=1 Note: The KFAIL on "BHRB has written 8 entries" is 
expected. POWER10 records 4 BHRB entries when other threads are active 
on the core; the test explicitly accounts for this with a fallback 
4-entry check which passes. STATUS=1 is the correct exit code when known 
failures exist. --- Test: selftest-setup (Patch 3/build structure) --- $ 
./run_tests.sh -a powerpc selftest-setup PASS selftest-setup (2 tests) 
Full log: timeout -k 1s --foreground 90s \ /usr/bin/qemu-system-ppc64 
-nodefaults -accel kvm \ -machine pseries,cap-ccf-assist=off -bios 
powerpc/boot_rom.bin \ -display none -serial stdio -kernel 
powerpc/selftest.elf \ -smp 2 -append setup smp=2 mem=1024 -m 1g PASS: 
selftest: setup: smp: nr_cpus_present = 2 PASS: selftest: setup: mem: 
size = 1024 MB SUMMARY: 2 tests EXIT: STATUS=1 --- Test: selftest-panic 
(Patches 5 & 6) --- $ ./run_tests.sh -a powerpc selftest-panic PASS 
selftest-panic Full log: run_panic timeout -k 1s --foreground 90s \ 
/usr/bin/qemu-system-ppc64 -nodefaults -accel kvm \ -machine 
pseries,cap-ccf-assist=off -bios powerpc/boot_rom.bin \ -display none 
-serial stdio -kernel powerpc/selftest.elf \ -smp 1 -append panic 
qemu-system-ppc64: OS terminated: rtas_os_panic PASS: guest panicked 
EXIT: STATUS=1 Note: The panic test validates both the new 
rtas_os_panic() RTAS call (Patch 6) and the run_panic() exit status fix 
(Patch 5). QEMU exits with "OS terminated: rtas_os_panic" confirming the 
ibm,os-term RTAS token is correctly invoked, and the test runner 
correctly identifies this as a successful (expected) panic. Aniket Sahu