FYI, I get the following message if i set 4gb option in .config file BUG: sleeping function called from invalid context IRQ-14(469) at arch/x86/mm/highmem_32.c:8 in_atomic():0 [00000000], irqs_disabled():1 Pid: 469, comm: IRQ-14 Not tainted 2.6.26.8-rt12 #1 [<c0421f24>] __might_sleep+0xfc/0x101 [<c041cf03>] kmap+0x42/0x55 [<c05bf43f>] ata_sff_hsm_move+0x3d2/0x6a1 [<c05bf96d>] ata_sff_interrupt+0x153/0x1eb [<c0462dad>] handle_IRQ_event+0x4e/0xdc [<c0463203>] do_irqd+0x12b/0x229 [<c04630d8>] ? do_irqd+0x0/0x229 [<c043cb9b>] kthread+0x3b/0x61 [<c043cb60>] ? kthread+0x0/0x61 [<c04048df>] kernel_thread_helper+0x7/0x10 ======================= Regards -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html