linux-kernel - Re: [PATCH v6 02/76] KVM: SVM: Add GHCB definitions

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Message-ID: <20200824104451.GA4732@zn.tnic>
Date:   Mon, 24 Aug 2020 12:44:51 +0200
From:   Borislav Petkov <bp@...en8.de>
To:     Joerg Roedel <joro@...tes.org>
Cc:     x86@...nel.org, Joerg Roedel <jroedel@...e.de>,
        Tom Lendacky <thomas.lendacky@....com>, hpa@...or.com,
        Andy Lutomirski <luto@...nel.org>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Peter Zijlstra <peterz@...radead.org>,
        Jiri Slaby <jslaby@...e.cz>,
        Dan Williams <dan.j.williams@...el.com>,
        Juergen Gross <jgross@...e.com>,
        Kees Cook <keescook@...omium.org>,
        David Rientjes <rientjes@...gle.com>,
        Cfir Cohen <cfir@...gle.com>,
        Erdem Aktas <erdemaktas@...gle.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mike Stunes <mstunes@...are.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        Martin Radev <martin.b.radev@...il.com>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        virtualization@...ts.linux-foundation.org
Subject: Re: [PATCH v6 02/76] KVM: SVM: Add GHCB definitions

On Mon, Aug 24, 2020 at 10:53:57AM +0200, Joerg Roedel wrote:
>  static inline void __unused_size_checks(void)
>  {
> -	BUILD_BUG_ON(sizeof(struct vmcb_save_area) != 0x298);
> +	BUILD_BUG_ON(sizeof(struct vmcb_save_area) != 1032);
>  	BUILD_BUG_ON(sizeof(struct vmcb_control_area) != 256);
> +	BUILD_BUG_ON(sizeof(struct ghcb) != 4096);

Could those naked numbers be proper, meaningfully named defines?

-- 
Regards/Gruss,
    Boris.

https://people.kernel.org/tglx/notes-about-netiquette