From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Vadim A. Misbakh-Soloviov" Subject: [Regression] acpi_rsdp doesn't work in 3.12.{5-6} Date: Sun, 29 Dec 2013 17:34:46 +0700 Message-ID: <1441555.SfFoqOgBsH@note> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Received: from forward1h.mail.yandex.net ([84.201.187.146]:41286 "EHLO forward1h.mail.yandex.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751297Ab3L2Kew convert rfc822-to-8bit (ORCPT ); Sun, 29 Dec 2013 05:34:52 -0500 Received: from smtp2h.mail.yandex.net (smtp2h.mail.yandex.net [84.201.187.145]) by forward1h.mail.yandex.net (Yandex) with ESMTP id 137A09E133B for ; Sun, 29 Dec 2013 14:34:47 +0400 (MSK) Received: from smtp2h.mail.yandex.net (localhost [127.0.0.1]) by smtp2h.mail.yandex.net (Yandex) with ESMTP id CFD8117017EC for ; Sun, 29 Dec 2013 14:34:47 +0400 (MSK) Sender: linux-acpi-owner@vger.kernel.org List-Id: linux-acpi@vger.kernel.org To: linux-acpi@vger.kernel.org Hello there! Unfortunately I've server, that requires to manually point kernel to RS= DP- table. Otherwise ACPI doesn't work properly and kernel limits processor= s to 1. All the time until upgrade to 3.12.5/3.12.6 I did it by specifying=20 acpi_rsdp=3D0x7F1F7000 to the kernel cmdline (where 0x7F1F7000 is real = address=20 of RSDP table) and all worked fine. But now, after the upgrade, kernel = can't=20 find RSDP table anyway, even with redefinition in cmdline, and so it pr= ints > [ 0.000000] ACPI BIOS Error (bug): A valid RSDP was not found=20 (20130725/tbxfroot-212) And boots just like I don't specified real RSDT table address for it (w= ith 1=20 processor and with broken acpi functionality). As far, as I investigated, probleam appeared after=20 http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?= id=3D40031da445fb4d269af9c7c445b2adf674f171e7 Unfortunately, I can't fully bisect it and get exact place. Can you advice me, if it is possible to redefine RSDP table now, in 3.1= 2, and=20 how? And if it should use same syntax =E2=80=94 why it stop working? --=20 Best regsrds, mva -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html