Date: Wed, 12 Nov 2003 11:56:31 -0600 From: "Matthew D. Fuller" <fullermd@over-yonder.net> To: John Baldwin <jhb@FreeBSD.org> Cc: current@FreeBSD.org Subject: Re: APIC-UP related panic Message-ID: <20031112175631.GQ12248@over-yonder.net> In-Reply-To: <XFMail.20031111113526.jhb@FreeBSD.org> References: <200311110220.10204@harrymail> <XFMail.20031111113526.jhb@FreeBSD.org>
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I, for one, am always pleased to see these sort of in-depth explanations of these sort of shims. On Tue, Nov 11, 2003 at 11:35:26AM -0500 I heard the voice of John Baldwin, and lo! it spake thus: > > It's documented in /sys/i386/conf/NOTES now along with 'device apic'. For > a longer explanation of what is happening: > [...] > > So, by default, to work around motherboards that don't hook IRQ 0 > up to the I/O APIC, we route IRQ 0 through the the 8259A PICs. > [...] > > However, if NO_MIXED_MODE works, that is actually the more desirable > way to run your system. How common is the need for this? Does turning of mixed mode when it's not needed give any real advantages higher up? -- Matthew Fuller (MF4839) | fullermd@over-yonder.net Systems/Network Administrator | http://www.over-yonder.net/~fullermd/ "The only reason I'm burning my candle at both ends, is because I haven't figured out how to light the middle yet"
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