Date: Mon, 24 Feb 2003 08:35:57 -0800 From: Terry Lambert <tlambert2@mindspring.com> To: freebsd-current@fair-ware.com Cc: freebsd-current@FreeBSD.ORG, 'John Hay' <jhay@icomtek.csir.co.za> Subject: Re: cc: Internal error: Illegal instruction (program as) Message-ID: <3E5A49ED.4D7E93DD@mindspring.com> References: <003c01c2dbf4$27993390$0200a8c0@howesnet>
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"Paul A. Howes" wrote: > These two kernel options seem to have solved the problem. Builds now > run smoothly and error-free. I read the comments in NOTES about these > options and something clicked: I recall that most Pentium processors > will only deal with 4 kB pages. Aren't 4 MB pages a feature of the Xeon > processor, as it can address much more memory? No. The feature is existance-tested before it is used. These processors have a bug when dealing with certain operations relating to interactions of 4K and 4M pages. > If that is the case, then these options should be the default, and their > inverse provided in the kernel configuration file (ENABLE_PSE & > ENABLE_PG_G). You will lose around 15% performance from not having them enabled. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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