From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: IPIPE patch causes hang during initrd boot; Ubuntu 18 desktop system References: From: Jan Kiszka Message-ID: <4b6996dc-e425-cdfd-b95e-48c2aaa100d6@web.de> Date: Tue, 11 Jun 2019 11:09:08 +0200 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: quoted-printable List-Id: Discussions about the Xenomai project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: "Proctor, Frederick M. (Fed)" , "xenomai@xenomai.org" On 07.06.19 15:02, Proctor, Frederick M. (Fed) via Xenomai wrote: > I am installing Xenomai + Cobalt with the IPIPE patch on a Ubuntu > 18-based x86/64 desktop system. I have these versions: > > Linux kernel 4.14.71 PREEMPT_RT patch 4.14.71-rt44 IPIPE 4.14.71 Latest stable I-pipe version is ipipe-core-4.14.111-x86-3. > > I have compiled the kernel three different ways: the stock > configuration, with the PREEMPT_RT patch, and with the IPIPE patch (no > PREEMPT_RT). I have configured out the ACPI processor, CPU_FREQ, and > CPU_IDLE options in all cases. The first two boot fine (stock kernel, > PREEMPT_RT). The IPIPE-patched kernel hangs during the initrd loading > phase. > > I've tailored the kernel configuration somewhat based on the > hardware I have, but nothing has worked to get a booting IPIPE kernel. > > Does anyone have guidance on setting up the IPIPE patch on an x86/64 > kernel on a desktop Ubuntu 18 machine? I am planning on continuing to > trim down the kernel config options, but before I do this, I want to > ask this group if anyone has had a similar problem. > Does yous system start to boot again when the I-pipe kernel is built witho= ut CONFIG_IPIPE and CONFIG_XENOMAI? If no, compare the config to a working on= e, step-wise aligning to it. Jan