From: "H. Peter Anvin" <hpa@zytor.com>
To: "Luck, Tony" <tony.luck@intel.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>,
Andi Kleen <ak@novell.com>,
Arthur Jones <arthur.jones@qlogic.com>,
Vasily Tarasov <vtaras@openvz.org>,
linux-kernel@vger.kernel.org, Jan Kara <jack@ucw.cz>,
linux-arch@vger.kernel.org
Subject: Re: build fix for x86_64...
Date: Fri, 20 Jul 2007 10:03:04 -0700 [thread overview]
Message-ID: <46A0EAC8.9020203@zytor.com> (raw)
In-Reply-To: <617E1C2C70743745A92448908E030B2A01FA46A9@scsmsx411.amr.corp.intel.com>
Luck, Tony wrote:
>
> Which is better. But if we unconditionally set this CONFIG variable, then the
> code in fs/quota.c will have to read:
>
> #if defined(CONFIG_COMPAT) && defined(CONFIG_COMPAT_FOR_U64_ALIGNMENT)
>
> We can keep it simpler if the Kconfig file does the conditional for us:
>
> config COMPAT_FOR_U64_ALIGNMENT
> def_bool y
> depends on COMPAT
>
No, that would be bad. If compat_u64 is used to carry 32-bit ABIs
forward into 64-bit space without needing compatibility hacks, then this
would actually introduce ABI incompatibilities depending on CONFIG_COMPAT!
-hpa
next prev parent reply other threads:[~2007-07-20 17:04 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-07-19 22:24 build fix for x86_64 Arthur Jones
2007-07-19 23:09 ` Andi Kleen
2007-07-19 23:54 ` Luck, Tony
2007-07-20 8:32 ` Andi Kleen
2007-07-20 15:55 ` Randy Dunlap
2007-07-20 16:20 ` Luck, Tony
2007-07-20 16:48 ` Matthew Wilcox
2007-07-20 17:03 ` H. Peter Anvin [this message]
2007-07-20 17:25 ` Andi Kleen
2007-07-20 17:38 ` H. Peter Anvin
2007-07-20 17:40 ` Andreas Schwab
2007-07-20 17:45 ` H. Peter Anvin
2007-07-20 18:13 ` Andi Kleen
2007-07-20 19:29 ` H. Peter Anvin
2007-07-20 22:08 ` Luck, Tony
2007-07-20 22:34 ` H. Peter Anvin
2007-07-20 18:27 ` Andreas Schwab
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