linux-kernel - Re: [PATCH v3 10/15] powerpc/mm: use pte_next_pfn() in set

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Message-ID: <ZcRyyTjbq8jxoPWC@kernel.org>
Date: Thu, 8 Feb 2024 08:20:57 +0200
From: Mike Rapoport <rppt@...nel.org>
To: David Hildenbrand <david@...hat.com>
Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Matthew Wilcox <willy@...radead.org>,
	Ryan Roberts <ryan.roberts@....com>,
	Russell King <linux@...linux.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will@...nel.org>, Dinh Nguyen <dinguyen@...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>,
	Paul Walmsley <paul.walmsley@...ive.com>,
	Palmer Dabbelt <palmer@...belt.com>,
	Albert Ou <aou@...s.berkeley.edu>,
	Alexander Gordeev <agordeev@...ux.ibm.com>,
	Gerald Schaefer <gerald.schaefer@...ux.ibm.com>,
	Heiko Carstens <hca@...ux.ibm.com>,
	Vasily Gorbik <gor@...ux.ibm.com>,
	Christian Borntraeger <borntraeger@...ux.ibm.com>,
	Sven Schnelle <svens@...ux.ibm.com>,
	"David S. Miller" <davem@...emloft.net>,
	linux-arm-kernel@...ts.infradead.org, linuxppc-dev@...ts.ozlabs.org,
	linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
	sparclinux@...r.kernel.org
Subject: Re: [PATCH v3 10/15] powerpc/mm: use pte_next_pfn() in set_ptes()

On Mon, Jan 29, 2024 at 01:46:44PM +0100, David Hildenbrand wrote:
> Let's use our handy new helper. Note that the implementation is slightly
> different, but shouldn't really make a difference in practice.
> 
> Reviewed-by: Christophe Leroy <christophe.leroy@...roup.eu>
> Signed-off-by: David Hildenbrand <david@...hat.com>

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

> ---
>  arch/powerpc/mm/pgtable.c | 5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
> 
> diff --git a/arch/powerpc/mm/pgtable.c b/arch/powerpc/mm/pgtable.c
> index a04ae4449a02..549a440ed7f6 100644
> --- a/arch/powerpc/mm/pgtable.c
> +++ b/arch/powerpc/mm/pgtable.c
> @@ -220,10 +220,7 @@ void set_ptes(struct mm_struct *mm, unsigned long addr, pte_t *ptep,
>  			break;
>  		ptep++;
>  		addr += PAGE_SIZE;
> -		/*
> -		 * increment the pfn.
> -		 */
> -		pte = pfn_pte(pte_pfn(pte) + 1, pte_pgprot((pte)));
> +		pte = pte_next_pfn(pte);
>  	}
>  }
>  
> -- 
> 2.43.0
> 
> 

-- 
Sincerely yours,
Mike.