Hi, I've pulled todays git from git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc.git master I'v build an smp kernel with some spin-lock and driver-dma debugging stuff enabled. I've booted the kernel on my sparcstation-10 with dual supersparc-II (sm71) cpu The kernel boots and I can ssh into the system and it seems to run fine with "normal" use. I do see frequent debug messages about "BUG: scheduling while atomic: swapper/2/0/0x00000000". Under more heavy load, like building a kernel with "make -j4" the system will lock up after about 10 minutes, no error messages. root:~# uname -a Linux ss10 3.4.0-07645-g456d3d4-dirty #5 SMP Fri May 25 18:51:24 CEST 2012 sparc sun4m Texas Instruments, Inc. - SuperSparc-(II) GNU/Linux regards Magnus Lindholm -- 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