linux-kernel - Re: [PATCH v2 4/7] mm/x86: Drop two unnecessary pud

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Message-ID: <20240304130334.GR9179@nvidia.com>
Date: Mon, 4 Mar 2024 09:03:34 -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,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
	Dave Hansen <dave.hansen@...ux.intel.com>
Subject: Re: [PATCH v2 4/7] mm/x86: Drop two unnecessary pud_leaf()
 definitions

On Thu, Feb 29, 2024 at 04:42:55PM +0800, peterx@...hat.com wrote:
> From: Peter Xu <peterx@...hat.com>
> 
> pud_leaf() has a fallback macro defined in include/linux/pgtable.h already.
> Drop the extra two for x86.
> 
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Ingo Molnar <mingo@...hat.com>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: Dave Hansen <dave.hansen@...ux.intel.com>
> Cc: x86@...nel.org
> Signed-off-by: Peter Xu <peterx@...hat.com>
> ---
>  arch/x86/include/asm/pgtable.h      | 1 -
>  include/asm-generic/pgtable-nopmd.h | 1 -
>  2 files changed, 2 deletions(-)

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

> @@ -31,7 +31,6 @@ static inline int pud_none(pud_t pud)		{ return 0; }
>  static inline int pud_bad(pud_t pud)		{ return 0; }
>  static inline int pud_present(pud_t pud)	{ return 1; }
>  static inline int pud_user(pud_t pud)		{ return 0; }
> -static inline int pud_leaf(pud_t pud)		{ return 0; }

It would be nice to have a final patch making the signatures
consistent on all the arch inlines, it should return bool not int.

Jason