Date: Thu, 13 Nov 1997 19:18:38 +0000 (GMT) From: Terry Lambert <tlambert@primenet.com> To: chris@netmonger.net (Christopher Masto) Cc: freebsd-current@FreeBSD.ORG Subject: Re: Intel Pentium Bug: BSDI Releases a patch (fwd) Message-ID: <199711131918.MAA29928@usr08.primenet.com> In-Reply-To: <64fa86$bbu$1@schenectady.netmonger.net> from "Christopher Masto" at Nov 13, 97 04:35:18 pm
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> 'LOW PAGE' is unmapped, 'HIGH PAGE' is mapped. So Linux will see > a 'bounced exception' in the page fault handler only if exceptions 0-6 > happen ... they are very rare. The BSDI fix seems to cut at exception > 13, which thus includes important exceptions like the lazy-FPU exception. > Linux does not have this overhead. Why do they do it at 13 if they don't have to? What did Intel tell them that they didn't tell us that makes them willing to take the additional 7 IDT entry hit? Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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