linux-kernel - Re: [PATCH v16 05/13] x86/sev: Add Secure TSC support for SNP guests

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Message-ID: <20250107191817.GFZ319-V7lsrjBU8Tj@fat_crate.local>
Date: Tue, 7 Jan 2025 20:18:17 +0100
From: Borislav Petkov <bp@...en8.de>
To: Tom Lendacky <thomas.lendacky@....com>
Cc: "Nikunj A. Dadhania" <nikunj@....com>, linux-kernel@...r.kernel.org,
	x86@...nel.org, kvm@...r.kernel.org, mingo@...hat.com,
	tglx@...utronix.de, dave.hansen@...ux.intel.com, pgonda@...gle.com,
	seanjc@...gle.com, pbonzini@...hat.com, francescolavra.fl@...il.com
Subject: Re: [PATCH v16 05/13] x86/sev: Add Secure TSC support for SNP guests

On Tue, Jan 07, 2025 at 12:53:26PM -0600, Tom Lendacky wrote:
> Yes, but from a readability point of view this makes it perfectly clear
> that Secure TSC is only for SNP guests.

That would mean that we need to check SNP with every SNP-specific feature
which would be just silly. And all SNP feature bits have "SNP" in the same
so...

-- 
Regards/Gruss,
    Boris.

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