From: Yinghai Lu <yinghai.lu@oracle.com>
To: Prarit Bhargava <prarit@redhat.com>
Cc: Cyrill Gorcunov <gorcunov@gmail.com>,
linux-kernel@vger.kernel.org, linux-acpi@vger.kernel.org,
mjg@redhat.com, x86@kernel.org,
Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Suresh Siddha <suresh.b.siddha@intel.com>
Subject: Re: [PATCH]: x86: use acpi flags for apic mapping
Date: Thu, 03 Jun 2010 14:30:52 -0700 [thread overview]
Message-ID: <4C081F0C.8060504@oracle.com> (raw)
In-Reply-To: <4C081B4A.4060801@redhat.com>
On 06/03/2010 02:14 PM, Prarit Bhargava wrote:
>
>> It seems we don't need this patch.
>>
>> so all system should support phys apic mode, but system with less 8 cpus is supposed to support cluster mode for better performance.
>>
>> current kernel will try to use cluster mode if nr_cpus is less than 8.
>>
>> some system have problem like IBM and NCR only support phys apic mode even cpus < 8 ...
>>
>>
>
> What about systems that have set the ACPI values? We just ignore those
> then?
we checked the value to see if it only support phys apic mode.
Yinghai
prev parent reply other threads:[~2010-06-03 21:32 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-02 19:29 [PATCH]: x86: use acpi flags for apic mapping Prarit Bhargava
2010-06-02 19:49 ` Cyrill Gorcunov
2010-06-02 22:20 ` Prarit Bhargava
2010-06-03 17:21 ` Cyrill Gorcunov
2010-06-03 18:07 ` Prarit Bhargava
2010-06-03 20:59 ` Yinghai Lu
2010-06-03 21:14 ` Prarit Bhargava
2010-06-03 21:30 ` Yinghai Lu [this message]
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