[PATCH v5 4/7] KVM: selftests: Rename 'msr->available' to 'msr->fault_exepected' in hyperv_features test

From: Vitaly Kuznetsov
Date: Thu Oct 13 2022 - 05:59:30 EST

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It may not be clear what 'msr->available' means. The test actually
checks that accessing the particular MSR doesn't cause #GP, rename
the variable accordingly.

While on it, use 'true'/'false' instead of '1'/'0' for 'write'/
'fault_expected' as these are boolean.

Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
.../selftests/kvm/x86_64/hyperv_features.c | 184 +++++++++---------
1 file changed, 92 insertions(+), 92 deletions(-)

diff --git a/tools/testing/selftests/kvm/x86_64/hyperv_features.c b/tools/testing/selftests/kvm/x86_64/hyperv_features.c
index 05b32e550a80..3a93e0eb7c6e 100644
--- a/tools/testing/selftests/kvm/x86_64/hyperv_features.c
+++ b/tools/testing/selftests/kvm/x86_64/hyperv_features.c
@@ -34,7 +34,7 @@ static inline uint8_t hypercall(u64 control, vm_vaddr_t input_address,

struct msr_data {
uint32_t idx;
- bool available;
+ bool fault_expected;
bool write;
u64 write_val;
};
@@ -57,10 +57,10 @@ static void guest_msr(struct msr_data *msr)
else
vector = wrmsr_safe(msr->idx, msr->write_val);

- if (msr->available)
- GUEST_ASSERT_2(!vector, msr->idx, vector);
- else
+ if (msr->fault_expected)
GUEST_ASSERT_2(vector == GP_VECTOR, msr->idx, vector);
+ else
+ GUEST_ASSERT_2(!vector, msr->idx, vector);
GUEST_DONE();
}

@@ -153,13 +153,13 @@ static void guest_test_msrs_access(void)
* Only available when Hyper-V identification is set
*/
msr->idx = HV_X64_MSR_GUEST_OS_ID;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 1:
msr->idx = HV_X64_MSR_HYPERCALL;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 2:
feat->eax |= HV_MSR_HYPERCALL_AVAILABLE;
@@ -168,118 +168,118 @@ static void guest_test_msrs_access(void)
* HV_X64_MSR_HYPERCALL available.
*/
msr->idx = HV_X64_MSR_GUEST_OS_ID;
- msr->write = 1;
+ msr->write = true;
msr->write_val = LINUX_OS_ID;
- msr->available = 1;
+ msr->fault_expected = false;
break;
case 3:
msr->idx = HV_X64_MSR_GUEST_OS_ID;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 4:
msr->idx = HV_X64_MSR_HYPERCALL;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;

case 5:
msr->idx = HV_X64_MSR_VP_RUNTIME;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 6:
feat->eax |= HV_MSR_VP_RUNTIME_AVAILABLE;
msr->idx = HV_X64_MSR_VP_RUNTIME;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 7:
/* Read only */
msr->idx = HV_X64_MSR_VP_RUNTIME;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1;
- msr->available = 0;
+ msr->fault_expected = true;
break;

case 8:
msr->idx = HV_X64_MSR_TIME_REF_COUNT;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 9:
feat->eax |= HV_MSR_TIME_REF_COUNT_AVAILABLE;
msr->idx = HV_X64_MSR_TIME_REF_COUNT;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 10:
/* Read only */
msr->idx = HV_X64_MSR_TIME_REF_COUNT;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1;
- msr->available = 0;
+ msr->fault_expected = true;
break;

case 11:
msr->idx = HV_X64_MSR_VP_INDEX;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 12:
feat->eax |= HV_MSR_VP_INDEX_AVAILABLE;
msr->idx = HV_X64_MSR_VP_INDEX;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 13:
/* Read only */
msr->idx = HV_X64_MSR_VP_INDEX;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1;
- msr->available = 0;
+ msr->fault_expected = true;
break;

case 14:
msr->idx = HV_X64_MSR_RESET;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 15:
feat->eax |= HV_MSR_RESET_AVAILABLE;
msr->idx = HV_X64_MSR_RESET;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 16:
msr->idx = HV_X64_MSR_RESET;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 0;
- msr->available = 1;
+ msr->fault_expected = false;
break;

case 17:
msr->idx = HV_X64_MSR_REFERENCE_TSC;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 18:
feat->eax |= HV_MSR_REFERENCE_TSC_AVAILABLE;
msr->idx = HV_X64_MSR_REFERENCE_TSC;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 19:
msr->idx = HV_X64_MSR_REFERENCE_TSC;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 0;
- msr->available = 1;
+ msr->fault_expected = false;
break;

case 20:
msr->idx = HV_X64_MSR_EOM;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 21:
/*
@@ -287,146 +287,146 @@ static void guest_test_msrs_access(void)
* capability enabled and guest visible CPUID bit unset.
*/
msr->idx = HV_X64_MSR_EOM;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 22:
feat->eax |= HV_MSR_SYNIC_AVAILABLE;
msr->idx = HV_X64_MSR_EOM;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 23:
msr->idx = HV_X64_MSR_EOM;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 0;
- msr->available = 1;
+ msr->fault_expected = false;
break;

case 24:
msr->idx = HV_X64_MSR_STIMER0_CONFIG;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 25:
feat->eax |= HV_MSR_SYNTIMER_AVAILABLE;
msr->idx = HV_X64_MSR_STIMER0_CONFIG;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 26:
msr->idx = HV_X64_MSR_STIMER0_CONFIG;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 0;
- msr->available = 1;
+ msr->fault_expected = false;
break;
case 27:
/* Direct mode test */
msr->idx = HV_X64_MSR_STIMER0_CONFIG;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1 << 12;
- msr->available = 0;
+ msr->fault_expected = true;
break;
case 28:
feat->edx |= HV_STIMER_DIRECT_MODE_AVAILABLE;
msr->idx = HV_X64_MSR_STIMER0_CONFIG;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1 << 12;
- msr->available = 1;
+ msr->fault_expected = false;
break;

case 29:
msr->idx = HV_X64_MSR_EOI;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 30:
feat->eax |= HV_MSR_APIC_ACCESS_AVAILABLE;
msr->idx = HV_X64_MSR_EOI;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1;
- msr->available = 1;
+ msr->fault_expected = false;
break;

case 31:
msr->idx = HV_X64_MSR_TSC_FREQUENCY;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 32:
feat->eax |= HV_ACCESS_FREQUENCY_MSRS;
msr->idx = HV_X64_MSR_TSC_FREQUENCY;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 33:
/* Read only */
msr->idx = HV_X64_MSR_TSC_FREQUENCY;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1;
- msr->available = 0;
+ msr->fault_expected = true;
break;

case 34:
msr->idx = HV_X64_MSR_REENLIGHTENMENT_CONTROL;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 35:
feat->eax |= HV_ACCESS_REENLIGHTENMENT;
msr->idx = HV_X64_MSR_REENLIGHTENMENT_CONTROL;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 36:
msr->idx = HV_X64_MSR_REENLIGHTENMENT_CONTROL;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1;
- msr->available = 1;
+ msr->fault_expected = false;
break;
case 37:
/* Can only write '0' */
msr->idx = HV_X64_MSR_TSC_EMULATION_STATUS;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1;
- msr->available = 0;
+ msr->fault_expected = true;
break;

case 38:
msr->idx = HV_X64_MSR_CRASH_P0;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 39:
feat->edx |= HV_FEATURE_GUEST_CRASH_MSR_AVAILABLE;
msr->idx = HV_X64_MSR_CRASH_P0;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 40:
msr->idx = HV_X64_MSR_CRASH_P0;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 1;
- msr->available = 1;
+ msr->fault_expected = false;
break;

case 41:
msr->idx = HV_X64_MSR_SYNDBG_STATUS;
- msr->write = 0;
- msr->available = 0;
+ msr->write = false;
+ msr->fault_expected = true;
break;
case 42:
feat->edx |= HV_FEATURE_DEBUG_MSRS_AVAILABLE;
dbg->eax |= HV_X64_SYNDBG_CAP_ALLOW_KERNEL_DEBUGGING;
msr->idx = HV_X64_MSR_SYNDBG_STATUS;
- msr->write = 0;
- msr->available = 1;
+ msr->write = false;
+ msr->fault_expected = false;
break;
case 43:
msr->idx = HV_X64_MSR_SYNDBG_STATUS;
- msr->write = 1;
+ msr->write = true;
msr->write_val = 0;
- msr->available = 1;
+ msr->fault_expected = false;
break;

case 44:
--
2.37.3

Next message: Vitaly Kuznetsov: "[PATCH v5 6/7] KVM: selftests: Test that values written to Hyper-V MSRs are preserved"
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