From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kevin O'Connor Subject: Re: [PATCH] add acpi pmtimer support Date: Mon, 13 Aug 2012 18:47:07 -0400 Message-ID: <20120813224707.GA6299@morn.localdomain> References: <1344863050-8959-1-git-send-email-kraxel@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: seabios@seabios.org, kvm@vger.kernel.org To: Gerd Hoffmann Return-path: Received: from mail-qa0-f46.google.com ([209.85.216.46]:37184 "EHLO mail-qa0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754052Ab2HMWrK (ORCPT ); Mon, 13 Aug 2012 18:47:10 -0400 Received: by qaas11 with SMTP id s11so1367527qaa.19 for ; Mon, 13 Aug 2012 15:47:10 -0700 (PDT) Content-Disposition: inline In-Reply-To: <1344863050-8959-1-git-send-email-kraxel@redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On Mon, Aug 13, 2012 at 03:04:10PM +0200, Gerd Hoffmann wrote: > This patch makes seabios use the acpi pmtimer instead of tsc for > timekeeping. The pmtimer has a fixed frequency and doesn't need > calibration, thus it doesn't suffer from calibration errors due to a > loaded host machine. It looks okay to me. It'd be nice to have a CONFIG_PMTIMER for it, but it can be added on top. -Kevin