linux-kernel - Re: [PATCH v2 10/15] powerpc/mm: use pte_next_pfn() in set

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Date: Thu, 25 Jan 2024 21:27:27 +0000
From: Christophe Leroy <christophe.leroy@...roup.eu>
To: David Hildenbrand <david@...hat.com>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
CC: "linux-mm@...ck.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>, 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"
	<linux-arm-kernel@...ts.infradead.org>, "linuxppc-dev@...ts.ozlabs.org"
	<linuxppc-dev@...ts.ozlabs.org>, "linux-riscv@...ts.infradead.org"
	<linux-riscv@...ts.infradead.org>, "linux-s390@...r.kernel.org"
	<linux-s390@...r.kernel.org>, "sparclinux@...r.kernel.org"
	<sparclinux@...r.kernel.org>
Subject: Re: [PATCH v2 10/15] powerpc/mm: use pte_next_pfn() in set_ptes()



Le 25/01/2024 à 20:32, David Hildenbrand a écrit :
> Let's use our handy new helper. Note that the implementation is slightly
> different, but shouldn't really make a difference in practice.
> 
> Signed-off-by: David Hildenbrand <david@...hat.com>

Reviewed-by: Christophe Leroy <christophe.leroy@...roup.eu>

> ---
>   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 a04ae4449a025..549a440ed7f65 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);
>   	}
>   }
>