linux-kernel - [PATCH v1 18/18] KVM: selftests/kvm_create_max_vcpus: check KVM_MAX

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Date:   Mon, 24 Oct 2022 19:34:45 +0800
From:   Wei Wang <wei.w.wang@...el.com>
To:     seanjc@...gle.com, pbonzini@...hat.com
Cc:     dmatlack@...gle.com, vipinsh@...gle.com, ajones@...tanamicro.com,
        eric.auger@...hat.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org, Wei Wang <wei.w.wang@...el.com>
Subject: [PATCH v1 18/18] KVM: selftests/kvm_create_max_vcpus: check KVM_MAX_VCPUS

If the KVM side max vcpu number is larger than the one supported by the
userspace selftests, adjust the max number.

Signed-off-by: Wei Wang <wei.w.wang@...el.com>
---
 tools/testing/selftests/kvm/kvm_create_max_vcpus.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/tools/testing/selftests/kvm/kvm_create_max_vcpus.c b/tools/testing/selftests/kvm/kvm_create_max_vcpus.c
index 31b3cb24b9a7..bbdb371e21ed 100644
--- a/tools/testing/selftests/kvm/kvm_create_max_vcpus.c
+++ b/tools/testing/selftests/kvm/kvm_create_max_vcpus.c
@@ -50,6 +50,13 @@ int main(int argc, char *argv[])
 
 	pr_info("KVM_CAP_MAX_VCPU_ID: %d\n", kvm_max_vcpu_id);
 	pr_info("KVM_CAP_MAX_VCPUS: %d\n", kvm_max_vcpus);
+	pr_info("selftests KVM_MAX_VCPUS: %d\n", KVM_MAX_VCPUS);
+
+	if (kvm_max_vcpu_id > KVM_MAX_VCPUS)
+		kvm_max_vcpu_id = KVM_MAX_VCPUS;
+
+	if (kvm_max_vcpus > KVM_MAX_VCPUS)
+		kvm_max_vcpus = KVM_MAX_VCPUS;
 
 	/*
 	 * Check that we're allowed to open nr_fds_wanted file descriptors and
-- 
2.27.0