From mboxrd@z Thu Jan 1 00:00:00 1970 From: Leopold Palomo-Avellaneda Date: Tue, 25 Sep 2007 11:05:36 +0200 References: <18164.5365.820554.634410@domain.hid> <2ff1a98a0709250152m5d96437br8e98ba405fd4d471@domain.hid> In-Reply-To: <2ff1a98a0709250152m5d96437br8e98ba405fd4d471@domain.hid> MIME-Version: 1.0 Message-Id: <200709251105.36518.lepalom@domain.hid> Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="iso-8859-1" Content-Disposition: inline Subject: Re: [Xenomai-help] POSIX skin or CONFIG_XENO_OPT_PERVASIVE disabled List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: xenomai@xenomai.org A Dimarts 25 Setembre 2007 10:52, Gilles Chanteperdrix va escriure: > On 9/25/07, juergen.lanner@domain.hid wrote: > > Hello Gilles! > > > > Thank you very much for your reponse. > > > > LAPIC is disabled in BIOS, so "make menuconfig" does not even give me > > the possibility to change it at all. in the .config file I could find > > CONFIG_X86_LOCAL_APIC=y. > > I f I set it to =n and start "make menuconfig" again, it resets it to y > > even if I do not change anything manually. > > The reason why make menuconfig does not let you change the LAPIC > setting is that you selected the "SMP" option. Since your box only has > one CPU, you should disable SMP. Then you will be able to enable or > disable the local APIC. Note that if your box has an APIC, using it > gives better performances. I have a cpu with multicore (the kernel see 2 cpus) but it's _only_ physically one cpu. What I have to choose in the config, smp yes or not? Regards, Leo