Date: Thu, 31 Jan 2002 21:50:52 +0100 (CET) From: =?ISO-8859-1?Q?G=E9rard_Roudier?= <groudier@free.fr> To: Terry Lambert <tlambert2@mindspring.com> Cc: "Cameron, Frank" <Cameron@ctc.com>, 'Kenneth Culver' <culverk@yumyumyum.org>, David Malone <dwmalone@maths.tcd.ie>, "'freebsd-bugs@freebsd.org'" <freebsd-bugs@FreeBSD.ORG>, "'freebsd-current@freebsd.org'" <freebsd-current@FreeBSD.ORG> Subject: Re: AMD AGP Bug Message-ID: <20020131214744.Y1769-100000@gerard> In-Reply-To: <3C59E050.6564C115@mindspring.com>
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On Thu, 31 Jan 2002, Terry Lambert wrote: > "Cameron, Frank" wrote: > > From what was posted on the linux-kernel list the problem is the OS > > doing the wrong thing not the hardware. I originally asked the > > question (albeit not worded as clearly as I should have) because if > > Microsoft and Linux programmers made the same mistake, might > > FreeBSD have also. > > No. FreeBSD does not make active use of 4M pages for anything > other than the initial kernel text and data, which is obvious, > if you look at /sys/i386/machdep.c. > > For Linux and Windows, the obvious thing is to not map the > memory into an aperture marked cacheable and in a 4M page; > it's a coding problem with the use of 4M pages, when memory > in them is allocated to AGP. > > This still doesn't get around the other bug, which happens > if you use 4M pages certain obviously useful ways, without > waving a dead chicken over certain things. 8-). This one is not $10,000 but $0, since it has already been suggested.:-) G=E9rard. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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