linux-kernel - Re: [PATCH v2 21/31] arm64: 32-bit (compat) applications support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20120820105308.GA906@elf.ucw.cz>
Date:	Mon, 20 Aug 2012 12:53:08 +0200
From:	Pavel Machek <pavel@....cz>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	linux-arch@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, Arnd Bergmann <arnd@...db.de>,
	Will Deacon <will.deacon@....com>
Subject: Re: [PATCH v2 21/31] arm64: 32-bit (compat) applications support

Hi!

> This patch adds support for 32-bit applications. The vectors page is a
> binary blob mapped into the application user space at 0xffff0000 (the
> AArch64 toolchain does not support compilation of AArch32 code). Full
> compatibility with ARMv7 user space is supported. The use of deprecated
> ARMv7 functionality (SWP, CP15 barriers) has been disabled by default on
> AArch64 kernels and unaligned LDM/STM is not supported.
> 
> Please note that only the ARM 32-bit EABI is supported, so no OABI
> compatibility.

> +struct compat_statfs {
> +	int		f_type;
> +	int		f_bsize;
> +	int		f_blocks;
> +	int		f_bfree;
> +	int		f_bavail;
> +	int		f_files;
> +	int		f_ffree;
> +	compat_fsid_t	f_fsid;
> +	int		f_namelen;	/* SunOS ignores this field. */

I'm sure it does. But is it good comment?

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/