Date: Mon, 30 Aug 1999 23:03:13 -0700 From: Mike Smith <mike@smith.net.au> To: "Neil Bradley" <neil@synthcom.com> Cc: smp@freebsd.org Subject: Re: BIOS calls on SMP systems Message-ID: <199908310603.XAA02907@dingo.cdrom.com> In-Reply-To: Your message of "Mon, 30 Aug 1999 23:02:47 PDT." <02d601bef376$74434a10$076291c6@Engineering.retrocade.com>
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> > Ok, so the baseline answer is "only the BSP can reliably call the BIOS". > > Correct - but with a "depends" attached to it. What interrupt services are > you calling? At the moment, the PnP, APM and SMB BIOS APIs. We will probably end up calling the PCI BIOS. > > Correct there? If so, I have some interesting tunneling work to do... > > Yes, but it depends upon what services you want to call in the BIOS. ON > second thought, even doing 32 bit PCI function calls won't be safe because > of the access to 0xcf8/0xcfc for configuration access. > > In other words, I wouldn't use the AP's to call BIOS services. Ok, thanks. More fun. 8) -- \\ The mind's the standard \\ Mike Smith \\ of the man. \\ msmith@freebsd.org \\ -- Joseph Merrick \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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