From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <49468ED1.3030504@domain.hid> Date: Mon, 15 Dec 2008 18:07:29 +0100 From: Jan Kiszka MIME-Version: 1.0 References: <200812090832.43063.roberto.bucher@domain.hid> <200812111119.40464.roberto.bucher@domain.hid> <4943A2AF.1050007@domain.hid> <200812140905.08103.roberto.bucher@domain.hid> In-Reply-To: <200812140905.08103.roberto.bucher@domain.hid> Content-Type: text/plain; charset=ISO-8859-15 Content-Transfer-Encoding: 7bit Subject: Re: [Adeos-main] Problems with last adeos patches List-Id: General discussion about Adeos List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Roberto Bucher Cc: adeos-main Roberto Bucher wrote: > I installed a new machine with Dual Core processor, but with the same chipset > as the working centrino mono processor machine (which has been working fine for > a week with kernel 2.6.27.8+patch), and this PC freezes exactly like the other > dual core laptop. > > It seems that the problem happens only on system with CPU>1. I'm currently reviewing the x86 2.6.27 patch /wrt to potential SMP issues. One thing I came across is our old friend, the MTRR subsystem. There are a few local_irq_disable_hw spots, some are even local_irq_disable_full, but others are still plain vanilla, and I'm not 100% sure that this is correct. I will check this carefully, probably coming up with some correction patch. In the meantime, could you check if disabling CONFIG_MTRR changes the picture you (or anyone else with a similar problem)? TiA, Jan -- Siemens AG, Corporate Technology, CT SE 26 Corporate Competence Center Embedded Linux