linux-kernel - Re: [PATCH v6 11/20] arm64:ilp32: support core dump generation for ILP32

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Message-ID: <20151217140524.GE25232@e104818-lin.cambridge.arm.com>
Date:	Thu, 17 Dec 2015 14:05:24 +0000
From:	Catalin Marinas <catalin.marinas@....com>
To:	Yury Norov <ynorov@...iumnetworks.com>
Cc:	arnd@...db.de, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, pinskia@...il.com,
	Prasun.Kapoor@...iumnetworks.com, schwab@...e.de,
	broonie@...nel.org, Nathan_Lynch@...tor.com, agraf@...e.de,
	klimov.linux@...il.com,
	Andrew Pinski <Andrew.Pinski@...iumnetworks.com>,
	jan.dakinevich@...il.com, ddaney.cavm@...il.com,
	bamvor.zhangjian@...wei.com, philipp.tomsich@...obroma-systems.com,
	joseph@...esourcery.com, christoph.muellner@...obroma-systems.com
Subject: Re: [PATCH v6 11/20] arm64:ilp32: support core dump generation for
 ILP32

On Wed, Dec 16, 2015 at 12:42:37AM +0300, Yury Norov wrote:
> diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h
> index 8786ca5..4e2e3c0 100644
> --- a/arch/arm64/include/asm/elf.h
> +++ b/arch/arm64/include/asm/elf.h
[...]
> +/*
> + * struct elf_prstatus is defined in include/uapi/linux/elfcore.h,
> + * and has different sise for supported ABIs
> + */
> +#define PRSTATUS_SIZE(S)		(is_a32_compat_task() ? 124 : (is_ilp32_compat_task() ? 352 : 392))

It's the *third* time I ask this: can you not use some sizeof instead of
the magic numbers?

-- 
Catalin
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