Date: Mon, 3 Mar 2003 17:51:52 -0600 (CST) From: Spencer Minear <spencer_minear@securecomputing.com> To: freebsd-smp@freebsd.org Subject: Compaq 370/380/580 G3 SMP problem details? Message-ID: <200303032351.h23Npq029060@sem.sctc.com>
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I'm told that there may have been some discussion in a FreeBSD mail list about the real details behind the problems with new Compaq G3 servers not running in MP mode. The root problem appears to be that on these systems, placing a value of 0x10 in the Local APIC TPR register results in blocking all interrupts. The spec clearly says that this should not block interrupts with priorty greater than 1, but it sure appears to be happening. As mentioned I've been lead to belive that there are some entries in the FreeBSD mail archive discussing the details behind the problem, but I cannot find them. I have had one customer report that upgrading the BIOS on a 370 to the lastest reve resolved the problem on that system. I have upgraded the BIOS on the 380 to the lastest available from Compaq and found that did not provide any change in behavior. If anyone is can point me to the details that may have been discussed or have more details on the solutions available from Compaq I would appreciate hearing from you. Thanks, -- Spence Minear To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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