Date: Mon, 18 Feb 2002 00:45:29 +0100 From: Poul-Henning Kamp <phk@critter.freebsd.dk> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: Michael Smith <msmith@FreeBSD.ORG>, Bruce Evans <bde@zeta.org.au>, freebsd-current@FreeBSD.ORG Subject: Re: ACPI timer is screwed... (was Re: 'microuptime() went backwards ...' using ACPI timer. Shouldn't that be impossible? ) Message-ID: <28244.1013989529@critter.freebsd.dk> In-Reply-To: Your message of "Sun, 17 Feb 2002 15:18:01 PST." <200202172318.g1HNI1I02804@apollo.backplane.com>
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In message <200202172318.g1HNI1I02804@apollo.backplane.com>, Matthew Dillon wri tes: > >:I would like to see "the PIIX problem" caught on camera, personally. >:We're aware of one errata for it already, and we work around it. If >:there's another problem, or ideally if someone has some relatively quick >:code to test it, that would be much better. > > Holy shit. We are screwed. It's a free-running counter with NO > synchronization whatsoever. None. Zip. Zero. Yes, there is an errata for just that on early chipsets. Does the ..._slow patch I sent work for you ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 phk@FreeBSD.ORG | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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