linux-kernel - Re: [PATCH v2 3/7] KVM: x86: hyper-v: Move the remote TLB flush logic out of vmx

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Message-ID: <8a83b571-5c19-603e-193f-666b99a96461@redhat.com>
Date:   Fri, 16 Apr 2021 10:40:07 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>,
        Vineeth Pillai <viremana@...ux.microsoft.com>
Cc:     "H. Peter Anvin" <hpa@...or.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "K. Y. Srinivasan" <kys@...rosoft.com>, x86@...nel.org,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-hyperv@...r.kernel.org,
        Lan Tianyu <Tianyu.Lan@...rosoft.com>,
        Michael Kelley <mikelley@...rosoft.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, Wei Liu <wei.liu@...nel.org>,
        Stephen Hemminger <sthemmin@...rosoft.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>
Subject: Re: [PATCH v2 3/7] KVM: x86: hyper-v: Move the remote TLB flush logic
 out of vmx

On 16/04/21 10:36, Vitaly Kuznetsov wrote:
> - Create a dedicated set of files, e.g. 'kvmonhyperv.[ch]' (I also
> thought about 'hyperv_host.[ch]' but then I realized it's equally
> misleading as one can read this as 'KVM is acting as Hyper-V host').
> 
> Personally, I'd vote for the later. Besides eliminating confusion, the
> benefit of having dedicated files is that we can avoid compiling them
> completely when !IS_ENABLED(CONFIG_HYPERV) (#ifdefs in C are ugly).

Indeed.  For the file, kvm-on-hv.[ch] can do.

Paolo