(switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Wed, 3 Jun 2009 16:45:33 GMT bugzilla-daemon@xxxxxxxxxxxxxxxxxxx wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=13444 > > Summary: SparcServer 1000E SMP can cause kernel-nullpointer > with some hw configurations > Product: Platform Specific/Hardware > Version: 2.5 > Kernel Version: 2.4.37 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: SPARC32 > AssignedTo: zaitcev@xxxxxxxxx > ReportedBy: oftedal@xxxxxxxxx > Regression: No > > > Created an attachment (id=21732) > --> (http://bugzilla.kernel.org/attachment.cgi?id=21732) > SUN4D-SMP mode patch > > SparcServer 1000E/SUN4D machines will cause a kernel-nullpointer when running > in SMP-mode with certain hw configurations. > According to Sun documentation Slot A on the systemboards should be filled with > cpu modules first. This will fill physical cpu-slots 0,2,4,8 with cpus first. > The current smp code will then fill the init_tasks-array using the physical > cpu-mapping. > The scheduler on the other hand uses the logical cpu-mapping. > So in a two cpu system with two systemboards cpu-slots 0 and 2 will be occupied > and init_tasks-array position 0 and 2 will contain a idle_task. But the > scheduler will access init_tasks position 0 and 1 which will cause an error. > Any sparcserver 1000(E) system with 2 systemboards and 2 cpus, with 1 cpu per > board will cause this error. > Thanks, but handling patches via bugzilla is far from preferred. Please send the patch via email, as a reply-to-all to this email. The patch should include a full description and a Signed-off-by:, as per Documentation/SubmittingPatches. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
