linux-kernel - Re: [RFC 01/14] x86/apic: Add new driver for Secure AVIC

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Message-ID: <20241125100805.GAZ0RMhbjUAKad3p8A@fat_crate.local>
Date: Mon, 25 Nov 2024 11:08:05 +0100
From: Borislav Petkov <bp@...en8.de>
To: Neeraj Upadhyay <Neeraj.Upadhyay@....com>
Cc: "Melody (Huibo) Wang" <huibo.wang@....com>,
	linux-kernel@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com,
	dave.hansen@...ux.intel.com, Thomas.Lendacky@....com,
	nikunj@....com, Santosh.Shukla@....com, Vasant.Hegde@....com,
	Suravee.Suthikulpanit@....com, David.Kaplan@....com, x86@...nel.org,
	hpa@...or.com, peterz@...radead.org, seanjc@...gle.com,
	pbonzini@...hat.com, kvm@...r.kernel.org
Subject: Re: [RFC 01/14] x86/apic: Add new driver for Secure AVIC

On Mon, Nov 25, 2024 at 12:51:36PM +0530, Neeraj Upadhyay wrote:
> I see most of that flow required. By removing dependency on CONFIG_X86_X2APIC 
> and enabling SAVIC, I see below boot issues:

Ok, then please extend the Kconfig help text so that it explicitly calls out
the fact that the CONFIG_X86_X2APIC dependency is not only build but
functional one too and that SAVIC relies on X2APIC machinery being present in
the guest.

Thx.

-- 
Regards/Gruss,
    Boris.

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