Hi Xiao, What config file did you use to build the kernel ? The error probably could be that the fs drivers like ext3 or ext4 were not built into the kernel so the root filesystem in the image provided could not be mounted.
There are a few sample config files provided in the X86 FS download section on the wiki. Regards, Ankita On Thu, Mar 1, 2012 at 10:41 PM, Xiao Guo <[email protected]> wrote: > I got kernel panic when booting 4 cores using linux kernel 2.6.27, does > anybody have a solution for this? Thanks! > > > Root-NFS: No NFS server available, giving up. > > VFS: Unable to mount root fs via NFS, trying floppy. > > VFS: Insert root floppy and press ENTER > > VFS: Cannot open root device "<NULL>" or unknown-block(2,0) > > Please append a correct "root=" boot option; here are the available > partitions: > > Kernel panic - not syncing: VFS: Unable to mount root fs on > unknown-block(2,0) > > xiao > > > On Feb 28, 2012, at 8:44 PM, Gabriel Michael Black wrote: > > > I saw this problem as well. I don't know what's causing it. If you're > > looking for ways to debug it, I'd suggest figuring out what the CPU is > > doing while it's hung. Is it just waiting idle? Is it stuck in a loop? > > Is it stuck at one point in time and not progressing the simulation > > (unlikely)? Then try to find out what it's waiting for, if anything, > > and why that hasn't happened or the CPU hasn't noticed that it happened. > > > > Gabe > > > > Quoting "Ankita (Garg) Goel" <[email protected]>: > > > >> I am facing the same issue as Jason mentioned with detailed CPUs. The > >> system boot-up seems to be going fine, but seems stuck at running INIT, > >> even after 2-3 hrs. > >> > >> On Tue, Feb 28, 2012 at 2:37 PM, Nilay Vaish <[email protected]> wrote: > >> > >>> I have booted a 64 core system using timing simple cpu. > >>> > >>> -- > >>> Nilay > >>> > >>> > >>> > >>> On Tue, 28 Feb 2012, Jason Clemons wrote: > >>> > >>> I was able to boot 8 cores using atomic but I am still working on > >>>> multicore timing or detailed models. I currently get a error when init > >>>> calls fork at the end of booting. I am trying a couple of patches > from the > >>>> website to see if they will help. > >>>> > >>> > >>> Later, > >>> > >>> Jason > >>> > >>> > >>> Sent from my Samsung Epic? 4G > >>> > >>> Xiao Guo <[email protected]> wrote: > >>> > >>> Is it possible to boot more than 4 cores in x86 FS? > >>> > >>> > >>> On Feb 27, 2012, at 5:51 PM, Jason Clemons wrote: > >>> > >>> Gabe, > >>>> > >>>> Thanks for the patch. I did a hg pull and hg update this afternoon > and > >>>> have made some progress on booting. I found that with a custom built > >>>> version of 2.6.28.4 with smp on, the patch and the linux image files > >>>> (linux-bigswap2.img and linux-x86.img) from gem5.org I am able to > boot > >>>> multicore x86 using the default cpu type which I think is atomic. > >>>> > >>>> After working with Andrea, we noted that the boot problem for x86 > happens > >>>> with the PARSEC root image but not the linux-x86.img from gem5.org. > >>>> This was tested using the custom kernel and the default cpu type. > >>>> > >>>> I am currently attempting to test the detailed cpu-type with 2 cpus. > I > >>>> will let you know of any errors I run into. > >>>> > >>>> > >>>> Thanks, > >>>> > >>>> Jason Clemons > >>>> > >>>> > >>>> > >>>> Quoting Gabe Black <[email protected]>: > >>>> > >>>> I looked into this more, and the code that sets up the memory > hierarchy > >>>>> was broken a little while ago. I have a patch that seems to fix it > >>>>> (attached) but then it gets stuck a little later. I remember a while > ago > >>>>> someone had problems with atomic operations not being supported by > the > >>>>> memory system fully, but I don't remember the specifics. This might > be > >>>>> that problem too. > >>>>> > >>>>> Gabe > >>>>> > >>>>> On 02/24/12 02:45, Gabriel Michael Black wrote: > >>>>> > >>>>>> Yes, I have. You're using O3 though, and that support is fairly new. > >>>>>> > >>>>>> Gabe > >>>>>> > >>>>>> Quoting "Ankita (Garg) Goel" <[email protected]>: > >>>>>> > >>>>>> Hi, > >>>>>>> > >>>>>>> Has anyone been able to boot multiple cpus wth FS mode on x86 ? If > >>>>>>> yes, it > >>>>>>> would greatly help if you could share your environmental setup. The > >>>>>>> issues > >>>>>>> I am facing I have already posted in some previous emails. > >>>>>>> > >>>>>>> Thanks for your help! > >>>>>>> > >>>>>>> -- > >>>>>>> Regards, > >>>>>>> Ankita > >>>>>>> > >>>>>>> > >>>>>> > >>> ______________________________**_________________ > >>> gem5-users mailing list > >>> [email protected] > >>> http://m5sim.org/cgi-bin/**mailman/listinfo/gem5-users< > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users> > >>> > >>> _______________________________________________ > >>> gem5-users mailing list > >>> [email protected] > >>> http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > >>> > >> > >> > >> > >> -- > >> Regards, > >> Ankita > >> > > > > > > _______________________________________________ > > gem5-users mailing list > > [email protected] > > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > > > > > _______________________________________________ > gem5-users mailing list > [email protected] > http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users > -- Regards, Ankita Graduate Student Department of Computer Science University of Texas at Austin
_______________________________________________ gem5-users mailing list [email protected] http://m5sim.org/cgi-bin/mailman/listinfo/gem5-users
