From: Andi Kleen <ak@suse.de>
To: "Huang, Ying" <ying.huang@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
Thomas Gleixner <tglx@linutronix.de>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/5] x86: c_p_a clflush_cache_range fix
Date: Thu, 31 Jan 2008 08:40:25 +0100 [thread overview]
Message-ID: <200801310840.25221.ak@suse.de> (raw)
In-Reply-To: <1201764962.12950.23.camel@caritas-dev.intel.com>
On Thursday 31 January 2008 08:36:02 Huang, Ying wrote:
> Because in i386 early boot stage, boot_cpu_data may be not available,
> which makes clflush_cach_range() into infinite loop, which is called
> by change_page_attr(). This patch fixes this by providing a default
> clflush_size of 64. But the better method may be providing a
> early_identify_cpu() for i386.
There already is one. arch/x86/kernel/cpu/common.c:early_cpu_detect
Just set it to 64 there.
-Andi
next prev parent reply other threads:[~2008-01-31 7:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-31 7:36 [PATCH 2/5] x86: c_p_a clflush_cache_range fix Huang, Ying
2008-01-31 7:40 ` Andi Kleen [this message]
2008-01-31 8:27 ` Huang, Ying
2008-01-31 12:08 ` Ingo Molnar
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