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Subject[PATCH] selftests/kvm: Use num_vcpus when testing ICR in the xapic_state_test
Date
A TODO in xapic_state_test asks to use number of vCPUs instead of
vcpu.id + 1 in test_icr(). This patch adds support to get the number
of vCPUs from the VM created and use it.

Signed-off-by: Gautam Menghani <gautammenghani201@gmail.com>
---
.../selftests/kvm/x86_64/xapic_state_test.c | 17 ++++++++++-------
1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/tools/testing/selftests/kvm/x86_64/xapic_state_test.c b/tools/testing/selftests/kvm/x86_64/xapic_state_test.c
index 6f7a5ef66718..de934e8e5e41 100644
--- a/tools/testing/selftests/kvm/x86_64/xapic_state_test.c
+++ b/tools/testing/selftests/kvm/x86_64/xapic_state_test.c
@@ -96,9 +96,8 @@ static void __test_icr(struct xapic_vcpu *x, uint64_t val)
____test_icr(x, val & ~(u64)APIC_ICR_BUSY);
}

-static void test_icr(struct xapic_vcpu *x)
+static void test_icr(struct xapic_vcpu *x, int num_vcpus)
{
- struct kvm_vcpu *vcpu = x->vcpu;
uint64_t icr, i, j;

icr = APIC_DEST_SELF | APIC_INT_ASSERT | APIC_DM_FIXED;
@@ -110,11 +109,11 @@ static void test_icr(struct xapic_vcpu *x)
__test_icr(x, icr | i);

/*
- * Send all flavors of IPIs to non-existent vCPUs. TODO: use number of
- * vCPUs, not vcpu.id + 1. Arbitrarily use vector 0xff.
+ * Send all flavors of IPIs to non-existent vCPUs. Arbitrarily use vector 0xff.
*/
+
icr = APIC_INT_ASSERT | 0xff;
- for (i = vcpu->id + 1; i < 0xff; i++) {
+ for (i = num_vcpus; i < 0xff; i++) {
for (j = 0; j < 8; j++)
__test_icr(x, i << (32 + 24) | icr | (j << 8));
}
@@ -137,9 +136,13 @@ int main(int argc, char *argv[])
.is_x2apic = true,
};
struct kvm_vm *vm;
+ struct list_head *iter;
+ int nr_vcpus_created = 0;

vm = vm_create_with_one_vcpu(&x.vcpu, x2apic_guest_code);
- test_icr(&x);
+ list_for_each(iter, &vm->vcpus)
+ nr_vcpus_created++;
+ test_icr(&x, nr_vcpus_created);
kvm_vm_free(vm);

/*
@@ -153,6 +156,6 @@ int main(int argc, char *argv[])
vcpu_clear_cpuid_feature(x.vcpu, X86_FEATURE_X2APIC);

virt_pg_map(vm, APIC_DEFAULT_GPA, APIC_DEFAULT_GPA);
- test_icr(&x);
+ test_icr(&x, nr_vcpus_created);
kvm_vm_free(vm);
}
--
2.34.1
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