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From: Russell King - ARM Linux <linux@arm.linux.org.uk>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: linux-arch@vger.kernel.org, linux-kernel@vger.kernel.org,
	Miklos Szeredi <mszeredi@suse.cz>
Subject: Re: [PATCH 02/15] arm: __NR_syscalls fix
Date: Fri, 11 Apr 2014 11:33:51 +0100	[thread overview]
Message-ID: <20140411103351.GJ16119@n2100.arm.linux.org.uk> (raw)
In-Reply-To: <1397211951-20549-3-git-send-email-miklos@szeredi.hu>

On Fri, Apr 11, 2014 at 12:25:38PM +0200, Miklos Szeredi wrote:
> From: Miklos Szeredi <mszeredi@suse.cz>
> 
> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
> Cc: Russell King <linux@arm.linux.org.uk>
> ---

This has me wondering...

(a) what you think it fixes
(b) whether you tried to build-test this

The ARM instruction set supports 8-bit immediate constants with an even
power of two shift.  384 fits that (0x180), 382 does not (0x17e), and
in your following patch, 383 definitely doesn't (0x17f).

Having this constant larger than necessary does not cause any problem
for the syscall table: we explicitly pad it with calls to sys_ni_syscall
to make up the difference.

-- 
FTTC broadband for 0.8mile line: now at 9.7Mbps down 460kbps up... slowly
improving, and getting towards what was expected from it.

  reply	other threads:[~2014-04-11 10:34 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-04-11 10:25 [PATCH 00/15] wire up renameat2 syscall for various archs Miklos Szeredi
2014-04-11 10:25 ` [PATCH 01/15] i386: add renameat2 syscall Miklos Szeredi
2014-04-11 21:33   ` [tip:x86/urgent] i386: Wire up the renameat2() syscall tip-bot for Miklos Szeredi
2014-04-11 10:25 ` [PATCH 02/15] arm: __NR_syscalls fix Miklos Szeredi
2014-04-11 10:33   ` Russell King - ARM Linux [this message]
2014-04-11 11:50     ` Miklos Szeredi
2014-04-11 11:54       ` Russell King - ARM Linux
2014-04-11 12:02         ` Miklos Szeredi
2014-04-11 12:45           ` Russell King - ARM Linux
2014-04-23 10:27             ` Russell King - ARM Linux
2014-04-23 12:00               ` Miklos Szeredi
2014-04-11 10:25 ` [PATCH 03/15] arm: add renameat2 syscall Miklos Szeredi
2014-04-11 10:35   ` Russell King - ARM Linux
2014-04-11 11:48     ` Miklos Szeredi
2014-04-11 17:39       ` David Miller
2014-04-11 10:25 ` [PATCH 04/15] arm64: __NR_compat_syscalls fix Miklos Szeredi
2014-04-22 16:58   ` Catalin Marinas
2014-04-23  8:46     ` Miklos Szeredi
2014-04-23  9:40       ` Catalin Marinas
2014-04-11 10:25 ` [PATCH 05/15] arm64: add renameat2 syscall Miklos Szeredi
2014-04-22 17:01   ` Catalin Marinas
2014-04-11 10:25 ` [PATCH 06/15] m68k: " Miklos Szeredi
2014-04-14 16:29   ` Geert Uytterhoeven
2014-04-21  8:10   ` Geert Uytterhoeven
2014-04-22 15:32     ` Miklos Szeredi
2014-04-11 10:25 ` [PATCH 07/15] mips: " Miklos Szeredi
2014-04-23 11:40   ` James Hogan
2014-05-15 12:04   ` Miklos Szeredi
2014-04-11 10:25 ` [PATCH 08/15] ia64: " Miklos Szeredi
2014-05-15 12:10   ` Miklos Szeredi
2014-05-15 16:55     ` Tony Luck
2014-04-11 10:25 ` [PATCH 09/15] parisc: " Miklos Szeredi
2014-04-19 18:54   ` Helge Deller
2014-04-22 15:33     ` Miklos Szeredi
2014-04-11 10:25 ` [PATCH 10/15] powerpc: " Miklos Szeredi
2014-05-15 12:16   ` Miklos Szeredi
2014-04-11 10:25 ` [PATCH 11/15] s390: NR_syscalls fix Miklos Szeredi
2014-04-11 11:24   ` Martin Schwidefsky
2014-04-11 11:52     ` Miklos Szeredi
2014-04-11 10:25 ` [PATCH 12/15] s390: add renameat2 syscall Miklos Szeredi
2014-04-11 10:25 ` [PATCH 13/15] sparc: " Miklos Szeredi
2014-05-15 12:22   ` Miklos Szeredi
2014-05-15 16:49     ` David Miller
2014-05-16  9:09       ` Miklos Szeredi
2014-05-19  0:52         ` David Miller
2014-04-11 10:25 ` [PATCH 14/15] xtensa: " Miklos Szeredi
2014-05-15 12:25   ` Miklos Szeredi
2014-05-16 17:29     ` Max Filippov
2014-04-11 10:25 ` [PATCH 15/15] asm-generic: " Miklos Szeredi
2014-04-23 11:46   ` James Hogan
2014-04-14 16:32 ` [PATCH 00/15] wire up renameat2 syscall for various archs Geert Uytterhoeven
2014-04-14 20:11   ` Miklos Szeredi
2014-04-15  7:45     ` Geert Uytterhoeven

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