From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kimmo Taskinen Subject: Re: WAS: linux-rt fails to boot on > 3.12.5.-rt7 ... NOW IS: linux-rt-3.14 boots by reverting patches + nvidia uses __rt_mutex_init [which in 3.14 has been changed to EXPORT_SYMBOL_GPL] Date: Wed, 14 May 2014 12:03:49 +0300 Message-ID: <53733175.9020300@me.com> References: <535A7474.2090701@windriver.com> <535A9DDC.4070801@windriver.com> <5372BB0C.8030303@me.com> <20140514021740.GE22474@windriver.com> Mime-Version: 1.0 Content-Type: text/plain; CHARSET=US-ASCII; format=flowed Content-Transfer-Encoding: 7BIT To: jordan , Paul Gortmaker , "linux-rt-users@vger.kernel.org" Return-path: Received: from st11p00mm-asmtpout003.mac.com ([17.172.81.2]:41960 "EHLO st11p00mm-asmtp003.mac.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751308AbaENJDx (ORCPT ); Wed, 14 May 2014 05:03:53 -0400 Received: from [10.0.1.102] (cs181219184.pp.htv.fi [82.181.219.184]) by st11p00mm-asmtp003.mac.com (Oracle Communications Messaging Server 7u4-27.08(7.0.4.27.7) 64bit (built Aug 22 2013)) with ESMTPSA id <0N5K00M7Y3UD2880@st11p00mm-asmtp003.mac.com> for linux-rt-users@vger.kernel.org; Wed, 14 May 2014 09:03:52 +0000 (GMT) In-reply-to: Sender: linux-rt-users-owner@vger.kernel.org List-ID: On 14.05.2014 05:47, jordan wrote: >>> I had not been able to boot my Phenom II X4 910e PC with any of the >>> latest RT kernels (3.12 after 3.12.5-rt7 or 3.14 or not even the >>> latest 3.10 versions) until I today disabled AMD C1E from BIOS. An >>> other way to get it to boot was "acpi=off" as a parameter to kernel >>> but I need "button". I tried many others "processor.max_cstate=0", >>> "processor.nocst", etc... >>> >>> Without RT patch the "AMD C1E" is not a problem. > Kimmo, have you tried reverting the 3 patches that some of us have had > success in using to get a booting system? > > you can get the patch here; http://pastebin.com/VG7X5WjK ... it > applies over 3.14.3-rt5 [after you've already applied the -rt patch, > you apply it]. It's yielded working AMD Phenom systems for me > [although, i don't have the exact same H/W as you]. it might be worth > a try, just to see if it works. I can confirm that applying the patch in http://pastebin.com/VG7X5WjK to 3.14.3-rt5 makes my system bootable even with AMD C1E enabled. To clarify my previous email, those other tricks "processor.max_cstate=0", "processor.nocst", etc... did not help. Kimmo > >> OK, so I never got back to finding a system that could reproduce this, >> but it sounds like it is still worthwhile; thanks for the reminder and >> I'll go see if I can reproduce this on a quad since the six core was OK. > Hey Paul, I also forgot to get back to you ;) ... I had been carrying > over my .config - so i tried using defconfig too [just to see] and it > was no different. I was astonished that yours booted up just fine, > because i know of other AMD users [aside from Kimmo] who can't boot on > vainlla-rt... Again, 3.14.x-rtX boot and work just fine for me, by > reverting those patches. I had thought maybe -rt5 would boot [it > looked to have some substantial changes], but alas -rt5 also required > the patch for a working system. > > Jordan > >> P. >> -- >> >>> Cheers >>> Kimmo >>> >>>> -- >>>> To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in >>>> the body of a message to majordomo@vger.kernel.org >>>> More majordomo info at http://vger.kernel.org/majordomo-info.html >>>>