linux-kernel - Re: [PATCH v3 05/10] mm/x86: Drop two unnecessary pud

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Date: Wed, 6 Mar 2024 08:27:17 +0200
From: Mike Rapoport <rppt@...nel.org>
To: peterx@...hat.com
Cc: linux-mm@...ck.org, linux-kernel@...r.kernel.org,
	Christophe Leroy <christophe.leroy@...roup.eu>, x86@...nel.org,
	"Kirill A . Shutemov" <kirill@...temov.name>,
	Jason Gunthorpe <jgg@...dia.com>, Yang Shi <shy828301@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linuxppc-dev@...ts.ozlabs.org, Muchun Song <muchun.song@...ux.dev>,
	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 v3 05/10] mm/x86: Drop two unnecessary pud_leaf()
 definitions

On Tue, Mar 05, 2024 at 12:37:45PM +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
> Reviewed-by: Jason Gunthorpe <jgg@...dia.com>
> Acked-by: Thomas Gleixner <tglx@...utronix.de>
> Signed-off-by: Peter Xu <peterx@...hat.com>

Reviewed-by: Mike Rapoport (IBM) <rppt@...nel.org>

> ---
>  arch/x86/include/asm/pgtable.h      | 1 -
>  include/asm-generic/pgtable-nopmd.h | 1 -
>  2 files changed, 2 deletions(-)
> 
> diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
> index d6e993a5659f..9db7a38a0e9f 100644
> --- a/arch/x86/include/asm/pgtable.h
> +++ b/arch/x86/include/asm/pgtable.h
> @@ -1097,7 +1097,6 @@ static inline int pud_bad(pud_t pud)
>  	return (pud_flags(pud) & ~(_KERNPG_TABLE | _PAGE_USER)) != 0;
>  }
>  #else
> -#define pud_leaf	pud_large
>  static inline int pud_large(pud_t pud)
>  {
>  	return 0;
> diff --git a/include/asm-generic/pgtable-nopmd.h b/include/asm-generic/pgtable-nopmd.h
> index 8ffd64e7a24c..fa27e16bbe1b 100644
> --- a/include/asm-generic/pgtable-nopmd.h
> +++ b/include/asm-generic/pgtable-nopmd.h
> @@ -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; }
>  static inline void pud_clear(pud_t *pud)	{ }
>  #define pmd_ERROR(pmd)				(pud_ERROR((pmd).pud))
>  
> -- 
> 2.44.0
> 
> 

-- 
Sincerely yours,
Mike.