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

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

Sorry for the formatting mess in my previous email, my mail client 
stripped the linebreaks. Here is the readable version:

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