linux-kernel - Re: [PATCH] mm/ioremap: Probe platform for p4d huge map support

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Message-ID: <alpine.DEB.2.21.1906141422370.1722@nanos.tec.linutronix.de>
Date:   Fri, 14 Jun 2019 14:22:52 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Anshuman Khandual <anshuman.khandual@....com>
cc:     linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        akpm@...ux-foundation.org,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Michal Hocko <mhocko@...nel.org>,
        linux-arm-kernel@...ts.infradead.org, x86@...nel.org
Subject: Re: [PATCH] mm/ioremap: Probe platform for p4d huge map support

On Thu, 13 Jun 2019, Anshuman Khandual wrote:

> Finishing up what the commit c2febafc67734a ("mm: convert generic code to
> 5-level paging") started out while levelling up P4D huge mapping support
> at par with PUD and PMD. A new arch call back arch_ioremap_p4d_supported()
> is being added which just maintains status quo (P4D huge map not supported)
> on x86 and arm64.
> 
> Cc: Catalin Marinas <catalin.marinas@....com>
> Cc: Will Deacon <will.deacon@....com>
> Cc: Dave Hansen <dave.hansen@...ux.intel.com>
> Cc: Andy Lutomirski <luto@...nel.org>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: Michal Hocko <mhocko@...nel.org>
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: x86@...nel.org
> 
> Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>

Acked-by: Thomas Gleixner <tglx@...utronix.de>