linux-kernel - Re: [PATCH v10 35/39] KVM: selftests: Create a vendor independent helper to allocate Hyper-V specific test pages

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Date:   Wed, 21 Sep 2022 22:59:22 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Siddharth Chandrasekaran <sidcha@...zon.de>,
        Yuan Yao <yuan.yao@...ux.intel.com>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v10 35/39] KVM: selftests: Create a vendor independent
 helper to allocate Hyper-V specific test pages

On Wed, Sep 21, 2022, Vitaly Kuznetsov wrote:
> diff --git a/tools/testing/selftests/kvm/include/x86_64/hyperv.h b/tools/testing/selftests/kvm/include/x86_64/hyperv.h
> index 42213f5de17f..e00ce9e122f4 100644
> --- a/tools/testing/selftests/kvm/include/x86_64/hyperv.h
> +++ b/tools/testing/selftests/kvm/include/x86_64/hyperv.h
> @@ -265,4 +265,19 @@ extern struct hv_vp_assist_page *current_vp_assist;
>  
>  int enable_vp_assist(uint64_t vp_assist_pa, void *vp_assist);
>  
> +struct hyperv_test_pages {
> +	/* VP assist page */
> +	void *vp_assist_hva;
> +	uint64_t vp_assist_gpa;
> +	void *vp_assist;
> +
> +	/* Enlightened VMCS */
> +	void *enlightened_vmcs_hva;
> +	uint64_t enlightened_vmcs_gpa;
> +	void *enlightened_vmcs;

FYI (in case you or someone else is tempted to do further cleanup), at some point
there will be a patch to wrap these triplets[*] to cut down on the copy+paste.

[*] https://lore.kernel.org/all/YwznLAqRb2i4lHiH@google.com
 
> +};
> +
> +struct hyperv_test_pages *
> +vcpu_alloc_hyperv_test_pages(struct kvm_vm *vm, vm_vaddr_t *p_hv_pages_gva);

Please don't wrap before the function name.