Add an option to dirty_log_perf_test to disable MANUAL_PROTECT_ENABLE
and INITIALLY_SET so the legacy dirty logging code path can be tested.
Signed-off-by: David Matlack <dmatlack@xxxxxxxxxx>
---
tools/testing/selftests/kvm/dirty_log_perf_test.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/kvm/dirty_log_perf_test.c b/tools/testing/selftests/kvm/dirty_log_perf_test.c
index 1954b964d1cf..a0c2247855f6 100644
--- a/tools/testing/selftests/kvm/dirty_log_perf_test.c
+++ b/tools/testing/selftests/kvm/dirty_log_perf_test.c
@@ -298,12 +298,15 @@ static void run_test(enum vm_guest_mode mode, void *arg)
static void help(char *name)
{
puts("");
- printf("usage: %s [-h] [-i iterations] [-p offset] "
+ printf("usage: %s [-h] [-i iterations] [-p offset] [-g]"
"[-m mode] [-b vcpu bytes] [-v vcpus] [-o] [-s mem type]"
"[-x memslots]\n", name);
puts("");
printf(" -i: specify iteration counts (default: %"PRIu64")\n",
TEST_HOST_LOOP_N);
+ printf(" -g: Use the legacy dirty logging mode where KVM_GET_DIRTY_LOG\n"
+ " fetches and *clears* the dirty log. By default the test will\n"
+ " use MANUAL_PROTECT_ENABLE and INITIALLY_SET.\n");
printf(" -p: specify guest physical test memory offset\n"
" Warning: a low offset can conflict with the loaded test code.\n");
guest_modes_help();
@@ -343,8 +346,11 @@ int main(int argc, char *argv[])
guest_modes_append_default();
- while ((opt = getopt(argc, argv, "hi:p:m:b:f:v:os:x:")) != -1) {
+ while ((opt = getopt(argc, argv, "ghi:p:m:b:f:v:os:x:")) != -1) {
switch (opt) {
+ case 'g':
+ dirty_log_manual_caps = 0;
+ break;
case 'i':
p.iterations = atoi(optarg);
break;
--
2.34.1.173.g76aa8bc2d0-goog
