linux-kernel - Re: [PATCHv7 05/14] x86/boot: Add infrastructure required for unaccepted memory support

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Message-ID: <YqmyQZa4CTHkH3gT@hirez.programming.kicks-ass.net>
Date:   Wed, 15 Jun 2022 12:19:45 +0200
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
Cc:     Borislav Petkov <bp@...en8.de>, Andy Lutomirski <luto@...nel.org>,
        Sean Christopherson <seanjc@...gle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Joerg Roedel <jroedel@...e.de>,
        Ard Biesheuvel <ardb@...nel.org>,
        Andi Kleen <ak@...ux.intel.com>,
        Kuppuswamy Sathyanarayanan 
        <sathyanarayanan.kuppuswamy@...ux.intel.com>,
        David Rientjes <rientjes@...gle.com>,
        Vlastimil Babka <vbabka@...e.cz>,
        Tom Lendacky <thomas.lendacky@....com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Ingo Molnar <mingo@...hat.com>,
        Varad Gautam <varad.gautam@...e.com>,
        Dario Faggioli <dfaggioli@...e.com>,
        Dave Hansen <dave.hansen@...el.com>,
        Mike Rapoport <rppt@...nel.org>,
        David Hildenbrand <david@...hat.com>,
        marcelo.cerri@...onical.com, tim.gardner@...onical.com,
        khalid.elmously@...onical.com, philip.cox@...onical.com,
        x86@...nel.org, linux-mm@...ck.org, linux-coco@...ts.linux.dev,
        linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCHv7 05/14] x86/boot: Add infrastructure required for
 unaccepted memory support

On Tue, Jun 14, 2022 at 03:02:22PM +0300, Kirill A. Shutemov wrote:
> Pull functionality from the main kernel headers and lib/ that is
> required for unaccepted memory support.
> 
> This is preparatory patch. The users for the functionality will come in
> following patches.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> ---
>  arch/x86/boot/bitops.h                   | 40 ++++++++++++
>  arch/x86/boot/compressed/align.h         | 14 +++++
>  arch/x86/boot/compressed/bitmap.c        | 43 +++++++++++++
>  arch/x86/boot/compressed/bitmap.h        | 49 +++++++++++++++
>  arch/x86/boot/compressed/bits.h          | 36 +++++++++++
>  arch/x86/boot/compressed/compiler.h      |  9 +++
>  arch/x86/boot/compressed/find.c          | 54 ++++++++++++++++
>  arch/x86/boot/compressed/find.h          | 80 ++++++++++++++++++++++++
>  arch/x86/boot/compressed/math.h          | 37 +++++++++++
>  arch/x86/boot/compressed/minmax.h        | 61 ++++++++++++++++++
>  arch/x86/boot/compressed/pgtable_types.h | 25 ++++++++

That's quite a lot of duplicated code; is there really no way so share
this?