Date: Tue, 29 Jul 1997 08:44:23 +0930 (CST) From: grog@FreeBSD.ORG To: jdd@vbc.net (Jim Dixon) Cc: tom@sdf.com, hackers@FreeBSD.ORG Subject: Re: MAX physical memory for FreeBSD ? Message-ID: <199707282314.IAA02459@freebie.lemis.com> In-Reply-To: <Pine.BSI.3.91.970728210925.26615B-100000@avon-gw.uk1.vbc.net> from Jim Dixon at "Jul 28, 97 09:14:33 pm"
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Jim Dixon writes: > On Mon, 28 Jul 1997, Tom Samplonius wrote: > >>> panic: bouce memory out of range >> >> Do you have bounce buffers in your kernel? You probably shouldn't, >> unless you have ISA devices that require DMA. But who would use ISA >> devices in a large server? > > The only "ISA" devices are a floppy drive and an IDE drive. And, > yes, bounce buffers are enabled. I've just completed an upgrade of my 3.0-current system from mid-December 1996 to now. I'm running an aha and an ahc, have BOUNCE_BUFFERS enabled, yet I get a lot of messages like: Jul 28 22:44:34 freebie /kernel: aha0: DMA beyond end Of ISA: 0x3fcad14 Jul 28 22:44:42 freebie /kernel: aha0: DMA beyond end Of ISA: 0x227bd14 Jul 28 22:44:42 freebie /kernel: aha0: DMA beyond end Of ISA: 0x3cc9d14 I haven't looked at the code yet, but it seems that there's something funny here. Greg
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