linux-kernel - Re: [PATCHv3 4/4] x86/paravirt: Restrict PARAVIRT

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Message-ID: <b208fa08-a028-4bc8-a455-b37aa016cfb8@suse.com>
Date: Fri, 16 May 2025 14:43:57 +0200
From: Jürgen Groß <jgross@...e.com>
To: "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
 Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...hat.com>,
 Borislav Petkov <bp@...en8.de>, Dave Hansen <dave.hansen@...ux.intel.com>,
 x86@...nel.org, "H. Peter Anvin" <hpa@...or.com>
Cc: Jonathan Corbet <corbet@....net>, Andy Lutomirski <luto@...nel.org>,
 Peter Zijlstra <peterz@...radead.org>, Ard Biesheuvel <ardb@...nel.org>,
 Jan Kiszka <jan.kiszka@...mens.com>, Kieran Bingham <kbingham@...nel.org>,
 Michael Roth <michael.roth@....com>,
 Rick Edgecombe <rick.p.edgecombe@...el.com>,
 Brijesh Singh <brijesh.singh@....com>, Sandipan Das <sandipan.das@....com>,
 Tom Lendacky <thomas.lendacky@....com>, linux-kernel@...r.kernel.org,
 linux-doc@...r.kernel.org, linux-efi@...r.kernel.org, linux-mm@...ck.org
Subject: Re: [PATCHv3 4/4] x86/paravirt: Restrict PARAVIRT_XXL to 64-bit only

On 16.05.25 14:33, Kirill A. Shutemov wrote:
> PARAVIRT_XXL is exclusively utilized by XEN_PV, which is only compatible
> with 64-bit machines.
> 
> Clearly designate PARAVIRT_XXL as 64-bit only and remove ifdefs to
> support CONFIG_PGTABLE_LEVELS < 5.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

Reviewed-by: Juergen Gross <jgross@...e.com>

Juergen

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