[kvm-unit-tests PATCH v2 9/9] migration: add a migration selftest
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2024-02-02 07:05:31
Also in:
kvm, kvmarm, linux-s390
Subsystem:
the rest · Maintainer:
Linus Torvalds
Add a selftest for migration support in guest library and test harness code. It performs migrations a tight loop to irritate races and bugs in the test harness code. Acked-by: Claudio Imbrenda <imbrenda@linux.ibm.com> (s390x) Signed-off-by: Nicholas Piggin <npiggin@gmail.com> This has flushed out several bugs in developing the multi migration test harness code already. --- arm/Makefile.common | 1 + arm/unittests.cfg | 6 ++++++ common/selftest-migration.c | 34 ++++++++++++++++++++++++++++++++++ powerpc/Makefile.common | 1 + powerpc/unittests.cfg | 4 ++++ s390x/Makefile | 1 + s390x/unittests.cfg | 4 ++++ 7 files changed, 51 insertions(+) create mode 100644 common/selftest-migration.c
diff --git a/arm/Makefile.common b/arm/Makefile.common
index c2ee568c..371a2c6a 100644
--- a/arm/Makefile.common
+++ b/arm/Makefile.common@@ -5,6 +5,7 @@ # tests-common = $(TEST_DIR)/selftest.$(exe) +tests-common += $(TEST_DIR)/selftest-migration.$(exe) tests-common += $(TEST_DIR)/spinlock-test.$(exe) tests-common += $(TEST_DIR)/pci-test.$(exe) tests-common += $(TEST_DIR)/pmu.$(exe)
diff --git a/arm/unittests.cfg b/arm/unittests.cfg
index fe601cbb..1ffd9a82 100644
--- a/arm/unittests.cfg
+++ b/arm/unittests.cfg@@ -55,6 +55,12 @@ smp = $MAX_SMP extra_params = -append 'smp' groups = selftest +# Test migration +[selftest-migration] +file = selftest-migration.flat +groups = selftest migration + +arch = arm64 # Test PCI emulation [pci-test] file = pci-test.flat
diff --git a/common/selftest-migration.c b/common/selftest-migration.c
new file mode 100644
index 00000000..f70c505f
--- /dev/null
+++ b/common/selftest-migration.c@@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Machine independent migration tests + * + * This is just a very simple test that is intended to stress the migration + * support in the test harness. This could be expanded to test more guest + * library code, but architecture-specific tests should be used to test + * migration of tricky machine state. + */ +#include <libcflat.h> +#include <migrate.h> + +#if defined(__arm__) || defined(__aarch64__) +/* arm can only call getchar 15 times */ +#define NR_MIGRATIONS 15 +#else +#define NR_MIGRATIONS 100 +#endif + +int main(int argc, char **argv) +{ + int i = 0; + + report_prefix_push("migration"); + + for (i = 0; i < NR_MIGRATIONS; i++) + migrate_quiet(); + + report(true, "simple harness stress test"); + + report_prefix_pop(); + + return report_summary(); +}
diff --git a/powerpc/Makefile.common b/powerpc/Makefile.common
index eb88398d..da4a7bbb 100644
--- a/powerpc/Makefile.common
+++ b/powerpc/Makefile.common@@ -6,6 +6,7 @@ tests-common = \ $(TEST_DIR)/selftest.elf \ + $(TEST_DIR)/selftest-migration.elf \ $(TEST_DIR)/spapr_hcall.elf \ $(TEST_DIR)/rtas.elf \ $(TEST_DIR)/emulator.elf \
diff --git a/powerpc/unittests.cfg b/powerpc/unittests.cfg
index e71140aa..7ce57de0 100644
--- a/powerpc/unittests.cfg
+++ b/powerpc/unittests.cfg@@ -36,6 +36,10 @@ smp = 2 extra_params = -m 256 -append 'setup smp=2 mem=256' groups = selftest +[selftest-migration] +file = selftest-migration.elf +groups = selftest migration + [spapr_hcall] file = spapr_hcall.elf
diff --git a/s390x/Makefile b/s390x/Makefile
index b72f7578..344d46d6 100644
--- a/s390x/Makefile
+++ b/s390x/Makefile@@ -1,4 +1,5 @@ tests = $(TEST_DIR)/selftest.elf +tests += $(TEST_DIR)/selftest-migration.elf tests += $(TEST_DIR)/intercept.elf tests += $(TEST_DIR)/emulator.elf tests += $(TEST_DIR)/sieve.elf
diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg
index f5024b6e..a7ad522c 100644
--- a/s390x/unittests.cfg
+++ b/s390x/unittests.cfg@@ -24,6 +24,10 @@ groups = selftest # please keep the kernel cmdline in sync with $(TEST_DIR)/selftest.parmfile extra_params = -append 'test 123' +[selftest-migration] +file = selftest-migration.elf +groups = selftest migration + [intercept] file = intercept.elf
--
2.42.0