linux-kernel - Re: [PATCH v2 1/7] mm/ppc: Define pXd_large() with pXd

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Message-ID: <20240304125658.GO9179@nvidia.com>
Date: Mon, 4 Mar 2024 08:56:58 -0400
From: Jason Gunthorpe <jgg@...dia.com>
To: peterx@...hat.com
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...ts.ozlabs.org, Yang Shi <shy828301@...il.com>,
	"Kirill A . Shutemov" <kirill@...temov.name>,
	Muchun Song <muchun.song@...ux.dev>,
	Andrew Morton <akpm@...ux-foundation.org>, x86@...nel.org,
	Michael Ellerman <mpe@...erman.id.au>,
	Nicholas Piggin <npiggin@...il.com>,
	Christophe Leroy <christophe.leroy@...roup.eu>,
	"Aneesh Kumar K.V" <aneesh.kumar@...nel.org>,
	"Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>
Subject: Re: [PATCH v2 1/7] mm/ppc: Define pXd_large() with pXd_leaf()

On Thu, Feb 29, 2024 at 04:42:52PM +0800, peterx@...hat.com wrote:
> From: Peter Xu <peterx@...hat.com>
> 
> The two definitions are the same.  The only difference is that pXd_large()
> is only defined with THP selected, and only on book3s 64bits.
> 
> Instead of implementing it twice, make pXd_large() a macro to pXd_leaf().
> Define it unconditionally just like pXd_leaf().  This helps to prepare
> merging the two APIs.
> 
> Cc: Michael Ellerman <mpe@...erman.id.au>
> Cc: Nicholas Piggin <npiggin@...il.com>
> Cc: Christophe Leroy <christophe.leroy@...roup.eu>
> Cc: "Aneesh Kumar K.V" <aneesh.kumar@...nel.org>
> Cc: "Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>
> Cc: linuxppc-dev@...ts.ozlabs.org
> Signed-off-by: Peter Xu <peterx@...hat.com>
> ---
>  arch/powerpc/include/asm/book3s/64/pgtable.h | 16 ++--------------
>  arch/powerpc/include/asm/pgtable.h           |  2 +-
>  2 files changed, 3 insertions(+), 15 deletions(-)

Reviewed-by: Jason Gunthorpe <jgg@...dia.com>

Jason