From: Ingo Molnar <mingo@elte.hu>
To: Yinghai Lu <Yinghai.Lu@Sun.COM>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [PATCH] x86_64: remove wrong setting about CONSTANT_TSC for intel cpu
Date: Tue, 26 Feb 2008 08:20:35 +0100 [thread overview]
Message-ID: <20080226072035.GB24820@elte.hu> (raw)
In-Reply-To: <200802252320.01534.yinghai.lu@sun.com>
* Yinghai Lu <Yinghai.Lu@Sun.COM> wrote:
> also fix error in early_init_intel and reference about x86_capality,
> because it is array already.., prevent possible data corruption...
hm, why should there be data corruption:
> - set_bit(X86_FEATURE_CONSTANT_TSC, &c->x86_capability);
> + set_cpu_cap(c, X86_FEATURE_CONSTANT_TSC);
cpu_cpu_cap() is currently defined as:
#define set_cpu_cap(c, bit) set_bit(bit, (unsigned long *)((c)->x86_capability)
which is the same. set_cpu_cap() is indeed the cleaner form to do this
so your patch is correct as a cleanup.
Ingo
next prev parent reply other threads:[~2008-02-26 7:21 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-26 7:20 Yinghai Lu
2008-02-26 7:14 ` Ingo Molnar
2008-02-26 7:20 ` Ingo Molnar [this message]
2008-02-26 7:24 ` Yinghai Lu
2008-02-26 7:33 ` H. Peter Anvin
2008-02-26 9:47 ` Ingo Molnar
2008-02-26 17:29 ` Yinghai Lu
2008-02-26 7:34 ` Ingo Molnar
2008-02-26 7:39 ` Ingo Molnar
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