linux-kernel - Re: [RFC PATCH v3 7/7] KVM: selftests: Add tests for VM and vCPU cap KVM_CAP_X86_DISABLE

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Date:   Wed, 15 Jun 2022 11:14:12 +0800
From:   Chao Gao <chao.gao@...el.com>
To:     Kechen Lu <kechenl@...dia.com>
Cc:     kvm@...r.kernel.org, pbonzini@...hat.com, seanjc@...gle.com,
        vkuznets@...hat.com, somduttar@...dia.com,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH v3 7/7] KVM: selftests: Add tests for VM and vCPU cap
 KVM_CAP_X86_DISABLE_EXITS

>+/* Set debug control for trapped instruction exiting to userspace */
>+static void vcpu_set_debug_exit_userspace(struct kvm_vm *vm, int vcpuid,
>+		struct kvm_guest_debug *debug) {

The debug argument looks pointless. Probably you can remove it.

>+	memset(debug, 0, sizeof(*debug));
>+	debug->control = KVM_GUESTDBG_ENABLE | KVM_GUESTDBG_EXIT_USERSPACE;
>+	vcpu_set_guest_debug(vm, VCPU_ID_1, debug);
>+}