Date: Wed, 27 Feb 2008 12:42:53 +0000 From: Pete French <petefrench@ticketswitch.com> To: paulf@free.fr Cc: freebsd-amd64@freebsd.org Subject: Re: "freebsd-amd64" Message-ID: <E1JULcb-0001Er-9m@dilbert.ticketswitch.com> In-Reply-To: <47C48A4C.8040102@free.fr>
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> I've been following the subject for about 5 months now, and nobody seems > to be doing anything. Slightly harsh - it's been fully investigated and the cause of the problem found. From John Baldwin's email: "So the SMAP problem is that in the one BIOS I looked at, the SMAP BIOS call only works from real mode. Even if invoked from virtual 86 mode, the BIOS call fails. FreeBSD only calls the BIOS SMAP call from virtual 86 mode both in the loader and in the i386 kernel. The fix is quite complicated and involves rewriting the boot code to invoke BIOS calls from real mode rather than virtual 86 mode." -pete.
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