From: Ingo Molnar <mingo@elte.hu>
To: Joe Korty <joe.korty@ccur.com>
Cc: linux-kernel@vger.kernel.org, the arch/x86 maintainers <x86@kernel.org>
Subject: Re: [PATCH] x86: Change thread_info's flag field back to 32 bits
Date: Thu, 4 Dec 2008 11:06:20 +0100 [thread overview]
Message-ID: <20081204100620.GA17634@elte.hu> (raw)
In-Reply-To: <20081203235819.GA17615@tsunami.ccur.com>
* Joe Korty <joe.korty@ccur.com> wrote:
> Change x86_64's thread_info 'flags' field back to __u32.
>
> This was changed to 'unsigned long' when the thread_info*.h
> for i386 and x86_64 were merged. Change it back. We can
> do this as only 27 bits of 'flags' are actually used.
>
> This change actually packs down thread_info by 64 bits:
> 32 bits are saved by the smaller flags, and 32 bits are
> saved by the following 'mm_segment_t field' becoming
> naturally 64-bit aligned.
>
> Signed-off-by: Joe Korty <joe.korty@ccur.com>
applied, thanks Joe!
Ingo
prev parent reply other threads:[~2008-12-04 10:07 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-12-03 23:58 [PATCH] x86: Change thread_info's flag field back to 32 bits Joe Korty
2008-12-04 10:06 ` Ingo Molnar [this message]
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