linux-kernel - Re: [PATCH v1 07/20] ARC: mm: use generic macros

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Date:	Mon, 2 Nov 2015 06:23:49 +0000
From:	Vineet Gupta <Vineet.Gupta1@...opsys.com>
To:	Noam Camus <noamc@...hip.com>,
	"linux-snps-arc@...ts.infradead.org" 
	<linux-snps-arc@...ts.infradead.org>
CC:	"cmetcalf@...hip.com" <cmetcalf@...hip.com>,
	"gilf@...hip.com" <gilf@...hip.com>,
	"talz@...hip.com" <talz@...hip.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1 07/20] ARC: mm: use generic macros _BITUL()

On Saturday 31 October 2015 06:49 PM, Noam Camus wrote:
> From: Noam Camus <noamc@...hip.com>
>
> PGDIR_SIZE() cannot use "1UL" since it is called from mm/tlbex.S
> by VMALLOC_START. _BITUL() solves this build error.
>
> Signed-off-by: Noam Camus <noamc@...hip.com>
> ---
>  arch/arc/include/asm/pgtable.h |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arc/include/asm/pgtable.h b/arch/arc/include/asm/pgtable.h
> index 57af2f0..372a282 100644
> --- a/arch/arc/include/asm/pgtable.h
> +++ b/arch/arc/include/asm/pgtable.h
> @@ -210,7 +210,7 @@
>  #define BITS_FOR_PGD	(32 - BITS_FOR_PTE - BITS_IN_PAGE)
>  
>  #define PGDIR_SHIFT	(32 - BITS_FOR_PGD)
> -#define PGDIR_SIZE	(1UL << PGDIR_SHIFT)	/* vaddr span, not PDG sz */
> +#define PGDIR_SIZE	_BITUL(PGDIR_SHIFT)	/* vaddr span, not PDG sz */
>  #define PGDIR_MASK	(~(PGDIR_SIZE-1))
>  
>  #define	PTRS_PER_PTE	_BITUL(BITS_FOR_PTE)

For bisectability, please squash this with patch 4/20, and append the changelog of
this patch to 4/20

-Vineet

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