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Message-ID: <86802c440806091238o30ca6910w93163f45fd1419ae@mail.gmail.com>
Date: Mon, 9 Jun 2008 12:38:50 -0700
From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Ingo Molnar" <mingo@elte.hu>
Subject: Re: [PATCH] x86: update mptable v7 - fix
Cc: "Thomas Gleixner" <tglx@linutronix.de>, "H. Peter Anvin" <hpa@zytor.com>,
       "Andrew Morton" <akpm@linux-foundation.org>,
       "Eric W. Biederman" <ebiederm@xmission.com>,
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On Mon, Jun 9, 2008 at 12:09 PM, Ingo Molnar <mingo@elte.hu> wrote:
>
> * Yinghai Lu <yhlu.kernel@gmail.com> wrote:
>
>> thanks. So X86_MPPARSE is not needed when SMP is not enabled?
>
> here's the condition:
>
> config X86_MPPARSE
>        def_bool y
>        depends on (X86_32 && (X86_LOCAL_APIC && !X86_VISWS)) || X86_64
>
> 64-bit has it unconditionally, 32-bit has it on SMP, UP-IOAPIC or
> UP-local-APIC mode. [ (and VISWS is an ugly complication we should try
> to eradicate similarly to NUMAQ, if possible :-) ]

VISWS or VOYAGER depends on !PCI, that is some odd system.

YH