linux-kernel - Re: [PATCH v2] mm: kmalloc_index: make compiler break when size is not supported

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Message-ID: <20210511030903.GA105690@hyeyoo>
Date:   Tue, 11 May 2021 12:09:03 +0900
From:   Hyeonggon Yoo <42.hyeyoo@...il.com>
To:     Christoph Lameter <cl@...two.de>
Cc:     Vlastimil Babka <vbabka@...e.cz>,
        Matthew Wilcox <willy@...radead.org>, penberg@...nel.org,
        rientjes@...gle.com, iamjoonsoo.kim@....com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] mm: kmalloc_index: make compiler break when size is
 not supported

On Mon, May 10, 2021 at 05:15:23PM +0200, Christoph Lameter wrote:
> I guess this needs to be reviewed and tested by the users of architectures
> that can use large MAXORDER pages such as powerpc and Itanium.

as Vlastimil Babka said, I think it's fine too. because
KMALLOC_SHIFT_HIGH can't be bigger than 25 regardless of MAX_ORDER