linux-kernel - Re: [PATCH 2/2] x86/mm: Remove duplicate definition of _PAGE_PAT

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Date:   Tue, 5 Jan 2021 16:28:36 -0500
From:   Arvind Sankar <nivedita@...m.mit.edu>
To:     Arvind Sankar <nivedita@...m.mit.edu>
Cc:     Tom Lendacky <thomas.lendacky@....com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>, x86@...nel.org,
        linux-kernel@...r.kernel.org, stable@...r.kernel.org
Subject: Re: [PATCH 2/2] x86/mm: Remove duplicate definition of
 _PAGE_PAT_LARGE

On Wed, Nov 11, 2020 at 11:09:46AM -0500, Arvind Sankar wrote:
> _PAGE_PAT_LARGE is already defined next to _PAGE_PAT. Remove the
> duplicate.
> 
> Signed-off-by: Arvind Sankar <nivedita@...m.mit.edu>
> Fixes: 4efb56649132 ("x86/mm: Tabulate the page table encoding definitions")
> ---
>  arch/x86/include/asm/pgtable_types.h | 2 --
>  1 file changed, 2 deletions(-)
> 
> diff --git a/arch/x86/include/asm/pgtable_types.h b/arch/x86/include/asm/pgtable_types.h
> index 394757ee030a..f24d7ef8fffa 100644
> --- a/arch/x86/include/asm/pgtable_types.h
> +++ b/arch/x86/include/asm/pgtable_types.h
> @@ -177,8 +177,6 @@ enum page_cache_mode {
>  #define __pgprot(x)		((pgprot_t) { (x) } )
>  #define __pg(x)			__pgprot(x)
>  
> -#define _PAGE_PAT_LARGE		(_AT(pteval_t, 1) << _PAGE_BIT_PAT_LARGE)
> -
>  #define PAGE_NONE	     __pg(   0|   0|   0|___A|   0|   0|   0|___G)
>  #define PAGE_SHARED	     __pg(__PP|__RW|_USR|___A|__NX|   0|   0|   0)
>  #define PAGE_SHARED_EXEC     __pg(__PP|__RW|_USR|___A|   0|   0|   0|   0)
> -- 
> 2.26.2
> 

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