Message-ID: <4D0947BC.9050909@kernel.org>
Date: Wed, 15 Dec 2010 14:57:00 -0800
From: Yinghai Lu <yinghai@kernel.org>
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To: "H. Peter Anvin" <hpa@zytor.com>
CC: Ingo Molnar <mingo@elte.hu>, Andrew Morton <akpm@linux-foundation.org>,
        Thomas Gleixner <tglx@linutronix.de>,
        Wu Fengguang <fengguang.wu@intel.com>,
        Peter Zijlstra <peterz@infradead.org>,
        LKML <linux-kernel@vger.kernel.org>,
        Nikanth Karthikesan <knikanth@suse.de>,
        David Rientjes <rientjes@google.com>,
        "Zheng, Shaohui" <shaohui.zheng@intel.com>,
        "linux-hotplug@vger.kernel.org" <linux-hotplug@vger.kernel.org>,
        Eric Dumazet <eric.dumazet@gmail.com>,
        Bjorn Helgaas <bjorn.helgaas@hp.com>,
        Venkatesh Pallipadi <venki@google.com>, Nikhil Rao <ncrao@google.com>,
        Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Subject: Re: [PATCH] x86, acpi: Handle all SRAT cpu entries even have cpu
 num limitation
References: <20101111100628.GA24728@localhost> <1289478978.2084.74.camel@laptop> <20101111124015.GA9706@localhost> <1289480656.2084.80.camel@laptop> <20101113084018.GA23098@localhost> <1289644224.2084.521.camel@laptop> <20101113120030.GA31517@localhost> <1289653078.2084.675.camel@laptop> <20101113131042.GA5522@localhost> <4CDEE314.6090107@kernel.org> <20101113235746.GA9458@localhost> <4CDF3DA1.2090806@kernel.org> <4D093ABB.4030206@zytor.com> <4D0943D5.1090404@kernel.org> <4D094703.7080701@zytor.com>
In-Reply-To: <4D094703.7080701@zytor.com>
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On 12/15/2010 02:53 PM, H. Peter Anvin wrote:
> On 12/15/2010 02:40 PM, Yinghai Lu wrote:
>> On 12/15/2010 02:01 PM, H. Peter Anvin wrote:
>>> On 11/13/2010 05:38 PM, Yinghai Lu wrote:
>>>> Index: linux-2.6/arch/x86/kernel/acpi/boot.c
>>>> ===================================================================
>>>> --- linux-2.6.orig/arch/x86/kernel/acpi/boot.c
>>>> +++ linux-2.6/arch/x86/kernel/acpi/boot.c
>>>> @@ -198,6 +198,13 @@ static void __cpuinit acpi_register_lapi
>>>>  {
>>>>  	unsigned int ver = 0;
>>>>  
>>>> +#ifdef CONFIG_X86_64
>>>> +	if (id >= (MAX_APICS-1)) {
>>>> +		printk(KERN_INFO PREFIX "skipped apicid that is too big\n");
>>>> +		return;
>>>> +	}
>>>> +#endif
>>>> +
>>>>  	if (!enabled) {
>>>>  		++disabled_cpus;
>>>>  		return;
>>>
>>> Why the #ifdef?
>>
>> try to limit the affects to 32bit's bunch sub arch etc.
>>
> 
> I really, really don't like that... we want more unification, not less...

ok, will try to remove them.

Yinghai
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