linux-kernel - Re: [RFC PATCH v3 02/16] mm: Define __pte_leaf

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Message-ID: <ZlQRnSAtxL7l-8Mx@localhost.localdomain>
Date: Mon, 27 May 2024 06:52:45 +0200
From: Oscar Salvador <osalvador@...e.de>
To: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Jason Gunthorpe <jgg@...dia.com>, Peter Xu <peterx@...hat.com>,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org, linuxppc-dev@...ts.ozlabs.org
Subject: Re: [RFC PATCH v3 02/16] mm: Define __pte_leaf_size() to also take a
 PMD entry

On Sun, May 26, 2024 at 11:22:22AM +0200, Christophe Leroy wrote:
> On powerpc 8xx, when a page is 8M size, the information is in the PMD
> entry. So allow architectures to provide __pte_leaf_size() instead of
> pte_leaf_size() and provide the PMD entry to that function.
> 
> When __pte_leaf_size() is not defined, define it as a pte_leaf_size()
> so that architectures not interested in the PMD arguments are not
> impacted.
> 
> Only define a default pte_leaf_size() when __pte_leaf_size() is not
> defined to make sure nobody adds new calls to pte_leaf_size() in the
> core.
> 
> Signed-off-by: Christophe Leroy <christophe.leroy@...roup.eu>

thanks, this looks much cleaner.

Reviewed-by: Oscar Salvador <osalvador@...e.de>


-- 
Oscar Salvador
SUSE Labs