From owner-freebsd-smp Mon Aug 30 21:53:38 1999 Delivered-To: freebsd-smp@freebsd.org Received: from synthcom.com (beacon.synthcom.com [198.145.98.253]) by hub.freebsd.org (Postfix) with ESMTP id 5DA1C153B8 for ; Mon, 30 Aug 1999 21:53:32 -0700 (PDT) (envelope-from neil@synthcom.com) Received: from RETROCADE (unix.synthcom.com [198.145.98.7]) by synthcom.com (8.9.3/8.9.3) with SMTP id WAA04210 for ; Mon, 30 Aug 1999 22:03:49 -0700 (PDT) (envelope-from neil@synthcom.com) Message-ID: <009c01bef36d$394ee850$076291c6@Engineering.retrocade.com> From: "Neil Bradley" To: References: <199908302230.PAA00751@dingo.cdrom.com> Subject: Re: BIOS calls on SMP systems Date: Mon, 30 Aug 1999 21:56:44 -0700 MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.00.2918.2701 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2918.2701 Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > Can someone familiar with the Intel MP spec clarify for me whether it's > permissible for an AP to call the BIOS, or whether only the BSP may do > this? It depends upon what services of the BIOS you're looking to call. If it's the standard INT services, only the BSP will be able to do it reliably. If you're calling the PCI functions, then you're most likely safe. But it is safe for the BSP to call BIOS even when the AP's aren't. -->Neil To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message