[PATCH 20/42] KVM: selftests: Rename and tweak get_cpuid() to get_cpuid_entry()
From: Sean Christopherson
Date: Fri Jun 03 2022 - 21:23:27 EST
Rename get_cpuid() to get_cpuid_entry() to better reflect its behavior.
Leave set_cpuid() as is to avoid unnecessary churn, that helper will soon
be removed entirely.
Oppurtunistically tweak the implementation to avoid using a temporary
variable in anticipation of taggin the input @cpuid with "const".
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
.../testing/selftests/kvm/include/x86_64/processor.h | 4 ++--
tools/testing/selftests/kvm/lib/x86_64/processor.c | 11 +++++------
tools/testing/selftests/kvm/x86_64/cpuid_test.c | 4 ++--
3 files changed, 9 insertions(+), 10 deletions(-)
diff --git a/tools/testing/selftests/kvm/include/x86_64/processor.h b/tools/testing/selftests/kvm/include/x86_64/processor.h
index f170fd5f8726..fcfeac1590a2 100644
--- a/tools/testing/selftests/kvm/include/x86_64/processor.h
+++ b/tools/testing/selftests/kvm/include/x86_64/processor.h
@@ -692,8 +692,8 @@ void vm_set_page_table_entry(struct kvm_vm *vm, struct kvm_vcpu *vcpu,
/*
* get_cpuid() - find matching CPUID entry and return pointer to it.
*/
-struct kvm_cpuid_entry2 *get_cpuid(struct kvm_cpuid2 *cpuid, uint32_t function,
- uint32_t index);
+struct kvm_cpuid_entry2 *get_cpuid_entry(struct kvm_cpuid2 *cpuid,
+ uint32_t function, uint32_t index);
/*
* set_cpuid() - overwrites a matching cpuid entry with the provided value.
* matches based on ent->function && ent->index. returns true
diff --git a/tools/testing/selftests/kvm/lib/x86_64/processor.c b/tools/testing/selftests/kvm/lib/x86_64/processor.c
index ae40ff426ad8..b481ad131ec6 100644
--- a/tools/testing/selftests/kvm/lib/x86_64/processor.c
+++ b/tools/testing/selftests/kvm/lib/x86_64/processor.c
@@ -1191,16 +1191,15 @@ void assert_on_unhandled_exception(struct kvm_vcpu *vcpu)
}
}
-struct kvm_cpuid_entry2 *get_cpuid(struct kvm_cpuid2 *cpuid, uint32_t function,
- uint32_t index)
+struct kvm_cpuid_entry2 *get_cpuid_entry(struct kvm_cpuid2 *cpuid,
+ uint32_t function, uint32_t index)
{
int i;
for (i = 0; i < cpuid->nent; i++) {
- struct kvm_cpuid_entry2 *cur = &cpuid->entries[i];
-
- if (cur->function == function && cur->index == index)
- return cur;
+ if (cpuid->entries[i].function == function &&
+ cpuid->entries[i].index == index)
+ return &cpuid->entries[i];
}
TEST_FAIL("CPUID function 0x%x index 0x%x not found ", function, index);
diff --git a/tools/testing/selftests/kvm/x86_64/cpuid_test.c b/tools/testing/selftests/kvm/x86_64/cpuid_test.c
index ca36557646b0..8723d73dcdbd 100644
--- a/tools/testing/selftests/kvm/x86_64/cpuid_test.c
+++ b/tools/testing/selftests/kvm/x86_64/cpuid_test.c
@@ -157,7 +157,7 @@ static void set_cpuid_after_run(struct kvm_vcpu *vcpu)
TEST_ASSERT(!rc, "Setting unmodified CPUID after KVM_RUN failed: %d", rc);
/* Changing CPU features is forbidden */
- ent = get_cpuid(cpuid, 0x7, 0);
+ ent = get_cpuid_entry(cpuid, 0x7, 0);
ebx = ent->ebx;
ent->ebx--;
rc = __vcpu_set_cpuid(vcpu);
@@ -165,7 +165,7 @@ static void set_cpuid_after_run(struct kvm_vcpu *vcpu)
ent->ebx = ebx;
/* Changing MAXPHYADDR is forbidden */
- ent = get_cpuid(cpuid, 0x80000008, 0);
+ ent = get_cpuid_entry(cpuid, 0x80000008, 0);
eax = ent->eax;
x = eax & 0xff;
ent->eax = (eax & ~0xffu) | (x - 1);
--
2.36.1.255.ge46751e96f-goog