linux-kernel - Re: [PATCH 4/7] x86/mm: Introduce 'no5lvl' kernel parameter

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Message-ID: <alpine.DEB.2.21.1805191046150.1599@nanos.tec.linutronix.de>
Date:   Sat, 19 May 2018 10:46:26 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>
cc:     Ingo Molnar <mingo@...hat.com>, x86@...nel.org,
        "H. Peter Anvin" <hpa@...or.com>, Hugh Dickins <hughd@...gle.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 4/7] x86/mm: Introduce 'no5lvl' kernel parameter

On Fri, 18 May 2018, Kirill A. Shutemov wrote:

> The kernel parameter allows to force kernel to use 4-level paging even
> if hardware and kernel support 5-level paging.
> 
> The option may be useful to workaround regressions related to 5-level
> paging.
> 
> Signed-off-by: Kirill A. Shutemov <kirill.shutemov@...ux.intel.com>

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