From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <4E01E62D.8050504@domain.hid> Date: Wed, 22 Jun 2011 14:55:09 +0200 From: Jan Kiszka MIME-Version: 1.0 References: <18303_1308739447_4E01C777_18303_558_1_ECB646CBB62FD044927FDEDF0252D3E701E388B3612E@THSONEA01CMS03P.one.grp> <4E01CA9A.2040709@domain.hid> <17296_1308741006_4E01CD8E_17296_18611_1_ECB646CBB62FD044927FDEDF0252D3E701E388B361AA@THSONEA01CMS03P.one.grp> <4E01CE25.2020202@domain.hid> <17288_1308741885_4E01D0FD_17288_343_1_ECB646CBB62FD044927FDEDF0252D3E701E388B36206@domain.hid> <4E01E0EE.90002@domain.hid> <18303_1308746837_4E01E455_18303_6972_2_ECB646CBB62FD044927FDEDF0252D3E701E388B3645B@THSONEA01CMS03P.one.grp> In-Reply-To: <18303_1308746837_4E01E455_18303_6972_2_ECB646CBB62FD044927FDEDF0252D3E701E388B3645B@THSONEA01CMS03P.one.grp> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Subject: Re: [Xenomai-help] Kernel panic on boot with 2.5.6 List-Id: Help regarding installation and common use of Xenomai List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: VEYSSIERE Nicolas Cc: "xenomai@xenomai.org" On 2011-06-22 14:47, VEYSSIERE Nicolas wrote: > Yes, my host is Windows, I can't change anything about that, and yes it is only for testing. > > I changed my boot line : [ 0.000000] Kernel command line: root=/dev/sda3 xeno_hal.cpufreq=1200 clocksource=tsc console=tty0 console=ttyS0,115200 noapic acpi=noirq video=vesafb:mtrr:3,ywrap vga=6 > > But I didn't find the range or the unit for cpufreq, and maybe I had to prefix clocksource with xeno_hal ? Unit is HZ. > > But I noticed this in the log : > > [ 1.202694] BUG: unable to handle kernel NULL pointer dereference at 00000920 > [ 1.202694] IP: [] __xirq_end+0x12/0x2e > [ 1.202694] *pde = 00000000 > [ 1.202694] Oops: 0000 [#1] SMP > > Can it be because SMP is activated and that virtualbox is enabling only 1 processor with 1 core ? I don't know what vbox emulates in UP mode. We are only using it (for Windows hosts) in SMP mode. Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux