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KVM: selftests: Convert VMX's PMU capabilities test to printf guest asserts

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Convert x86's VMX PMU capabilities test to use printf-based guest asserts.
Opportunstically add a helper to do the WRMSR+assert so as to reduce the
amount of copy+paste needed to spit out debug information.

Link: https://lore.kernel.org/r/20230729003643.1053367-31-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>
This commit is contained in:
Sean Christopherson 2023-07-28 17:36:39 -07:00
parent 417bfd0c82
commit 30a6e0b455
1 changed files with 15 additions and 13 deletions
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28
tools/testing/selftests/kvm/x86_64/vmx_pmu_caps_test.c
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@ -10,6 +10,7 @@
* and check it can be retrieved with KVM_GET_MSR, also test
* the invalid LBR formats are rejected.
*/
#define USE_GUEST_ASSERT_PRINTF 1
#define _GNU_SOURCE /* for program_invocation_short_name */
#include <sys/ioctl.h>
@ -52,23 +53,24 @@ static const union perf_capabilities format_caps = {
.pebs_format = -1,
};
static void guest_test_perf_capabilities_gp(uint64_t val)
{
uint8_t vector = wrmsr_safe(MSR_IA32_PERF_CAPABILITIES, val);
__GUEST_ASSERT(vector == GP_VECTOR,
"Expected #GP for value '0x%llx', got vector '0x%x'",
val, vector);
}
static void guest_code(uint64_t current_val)
{
uint8_t vector;
int i;
vector = wrmsr_safe(MSR_IA32_PERF_CAPABILITIES, current_val);
GUEST_ASSERT_2(vector == GP_VECTOR, current_val, vector);
guest_test_perf_capabilities_gp(current_val);
guest_test_perf_capabilities_gp(0);
vector = wrmsr_safe(MSR_IA32_PERF_CAPABILITIES, 0);
GUEST_ASSERT_2(vector == GP_VECTOR, 0, vector);
for (i = 0; i < 64; i++) {
vector = wrmsr_safe(MSR_IA32_PERF_CAPABILITIES,
current_val ^ BIT_ULL(i));
GUEST_ASSERT_2(vector == GP_VECTOR,
current_val ^ BIT_ULL(i), vector);
}
for (i = 0; i < 64; i++)
guest_test_perf_capabilities_gp(current_val ^ BIT_ULL(i));
GUEST_DONE();
}
@ -95,7 +97,7 @@ static void test_guest_wrmsr_perf_capabilities(union perf_capabilities host_cap)
switch (get_ucall(vcpu, &uc)) {
case UCALL_ABORT:
REPORT_GUEST_ASSERT_2(uc, "val = 0x%lx, vector = %lu");
REPORT_GUEST_ASSERT(uc);
break;
case UCALL_DONE:
break;