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KVM: selftests: Allow slot modification stress test with quirk disabled

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Add a new user option to memslot_modification_stress_test to allow testing
with slot zap quirk KVM_X86_QUIRK_SLOT_ZAP_ALL disabled.

Signed-off-by: Yan Zhao <yan.y.zhao@intel.com>
Message-ID: <20240703021206.13923-1-yan.y.zhao@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Yan Zhao 2024-07-03 10:12:06 +08:00 committed by Paolo Bonzini
parent b4ed2c67d2
commit 218f641500
1 changed files with 17 additions and 2 deletions
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19
tools/testing/selftests/kvm/memslot_modification_stress_test.c
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@ -79,6 +79,7 @@ struct test_params {
useconds_t delay; useconds_t delay;
uint64_t nr_iterations; uint64_t nr_iterations;
bool partition_vcpu_memory_access; bool partition_vcpu_memory_access;
bool disable_slot_zap_quirk;
}; };
static void run_test(enum vm_guest_mode mode, void *arg) static void run_test(enum vm_guest_mode mode, void *arg)
@ -89,6 +90,13 @@ static void run_test(enum vm_guest_mode mode, void *arg)
vm = memstress_create_vm(mode, nr_vcpus, guest_percpu_mem_size, 1, vm = memstress_create_vm(mode, nr_vcpus, guest_percpu_mem_size, 1,
VM_MEM_SRC_ANONYMOUS, VM_MEM_SRC_ANONYMOUS,
p->partition_vcpu_memory_access); p->partition_vcpu_memory_access);
#ifdef __x86_64__
if (p->disable_slot_zap_quirk)
vm_enable_cap(vm, KVM_CAP_DISABLE_QUIRKS2, KVM_X86_QUIRK_SLOT_ZAP_ALL);
pr_info("Memslot zap quirk %s\n", p->disable_slot_zap_quirk ?
"disabled" : "enabled");
#endif
pr_info("Finished creating vCPUs\n"); pr_info("Finished creating vCPUs\n");
@ -107,11 +115,12 @@ static void run_test(enum vm_guest_mode mode, void *arg)
static void help(char *name) static void help(char *name)
{ {
puts(""); puts("");
printf("usage: %s [-h] [-m mode] [-d delay_usec]\n" printf("usage: %s [-h] [-m mode] [-d delay_usec] [-q]\n"
" [-b memory] [-v vcpus] [-o] [-i iterations]\n", name); " [-b memory] [-v vcpus] [-o] [-i iterations]\n", name);
guest_modes_help(); guest_modes_help();
printf(" -d: add a delay between each iteration of adding and\n" printf(" -d: add a delay between each iteration of adding and\n"
" deleting a memslot in usec.\n"); " deleting a memslot in usec.\n");
printf(" -q: Disable memslot zap quirk.\n");
printf(" -b: specify the size of the memory region which should be\n" printf(" -b: specify the size of the memory region which should be\n"
" accessed by each vCPU. e.g. 10M or 3G.\n" " accessed by each vCPU. e.g. 10M or 3G.\n"
" Default: 1G\n"); " Default: 1G\n");
@ -137,7 +146,7 @@ int main(int argc, char *argv[])
guest_modes_append_default(); guest_modes_append_default();
while ((opt = getopt(argc, argv, "hm:d:b:v:oi:")) != -1) { while ((opt = getopt(argc, argv, "hm:d:qb:v:oi:")) != -1) {
switch (opt) { switch (opt) {
case 'm': case 'm':
guest_modes_cmdline(optarg); guest_modes_cmdline(optarg);
@ -160,6 +169,12 @@ int main(int argc, char *argv[])
case 'i': case 'i':
p.nr_iterations = atoi_positive("Number of iterations", optarg); p.nr_iterations = atoi_positive("Number of iterations", optarg);
break; break;
case 'q':
p.disable_slot_zap_quirk = true;
TEST_REQUIRE(kvm_check_cap(KVM_CAP_DISABLE_QUIRKS2) &
KVM_X86_QUIRK_SLOT_ZAP_ALL);
break;
case 'h': case 'h':
default: default:
help(argv[0]); help(argv[0]);