linux-kernel - Re: [RFC PATCH v2 03/69] KVM: X86: move out the definition vmcs

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Date:   Tue, 13 Jul 2021 18:00:05 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     isaku.yamahata@...el.com
Cc:     Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        "H . Peter Anvin" <hpa@...or.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Joerg Roedel <joro@...tes.org>, erdemaktas@...gle.com,
        Connor Kuehl <ckuehl@...hat.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        isaku.yamahata@...il.com
Subject: Re: [RFC PATCH v2 03/69] KVM: X86: move out the definition
 vmcs_hdr/vmcs from kvm to x86

On Fri, Jul 02, 2021, isaku.yamahata@...el.com wrote:
> From: Isaku Yamahata <isaku.yamahata@...el.com>
> 
> This is preparation for TDX support.
> 
> Because SEAMCALL instruction requires VMX enabled, it needs to initialize
> struct vmcs and load it before SEAMCALL instruction.[1] [2]  Move out the
> definition of vmcs into a common x86 header, arch/x86/include/asm/vmx.h, so
> that seamloader code can share the same definition.
       ^^^^^^^^^^
       SEAMLDR?

I don't have a strong preference on what we call it, but we should be consistent
in our usage.

Same comments as the first two patches, without seeing the actual SEAMLDR code
it's impossible review this patch.  I certainly have no objection to splitting
up this behemoth, but the series should be self contained (within reason).