Hi, I've just seen this on my dmesg, this is new, never seen this before on this box and it happens only with this version of the kernel. In this configuration, the page size is set to 64K and I've enabled fake NUMA nodes on PowerPC. tce_buildmulti_pSeriesLP: plpar_tce_put failed. rc=-4 index = 0x4000002 npages = 0x0 tce[0] val = 0x15ad0001 Call Trace: [c00000000ffe74f0] [c0000000000491a4] .tce_buildmulti_pSeriesLP+0x26c/0x2ac (unreliable) [c00000000ffe75c0] [c0000000000295e4] .iommu_map_sg+0x1d4/0x418 [c00000000ffe76d0] [c000000000028664] .dma_iommu_map_sg+0x3c/0x50 [c00000000ffe7750] [c0000000003b6c30] .scsi_dma_map+0x70/0x94 [c00000000ffe77d0] [c0000000003dedbc] .ipr_queuecommand+0x300/0x500 [c00000000ffe7880] [c0000000003ae964] .scsi_dispatch_cmd+0x21c/0x2b8 [c00000000ffe7920] [c0000000003b67a0] .scsi_request_fn+0x310/0x460 [c00000000ffe79d0] [c00000000024ab90] .blk_run_queue+0x94/0xec [c00000000ffe7a70] [c0000000003b3b08] .scsi_run_queue+0x24c/0x27c [c00000000ffe7b20] [c0000000003b4424] .scsi_next_command+0x48/0x70 [c00000000ffe7bc0] [c0000000003b4b48] .scsi_end_request+0xbc/0xe4 [c00000000ffe7c60] [c0000000003b5294] .scsi_io_completion+0x170/0x3e8 [c00000000ffe7d40] [c0000000003ae0e4] .scsi_finish_command+0xb4/0xd4 [c00000000ffe7dd0] [c0000000003b584c] .scsi_softirq_done+0x114/0x138 [c00000000ffe7e60] [c00000000024af70] .blk_done_softirq+0xa0/0xd0 [c00000000ffe7ef0] [c00000000007a2a0] .__do_softirq+0xa8/0x164 [c00000000ffe7f90] [c000000000027edc] .call_do_softirq+0x14/0x24 [c00000003e183950] [c00000000000bdcc] .do_softirq+0x74/0xc0 [c00000003e1839e0] [c00000000007a450] .irq_exit+0x5c/0xac [c00000003e183a60] [c00000000000c414] .do_IRQ+0x17c/0x1f4 [c00000003e183b00] [c000000000004c24] hardware_interrupt_entry+0x24/0x28 --- Exception: 501 at .ppc64_runlatch_off+0x28/0x60 LR = .pseries_dedicated_idle_sleep+0xd8/0x1a4 [c00000003e183df0] [c000000000048494] .pseries_dedicated_idle_sleep+0x78/0x1a4 (unreliable) [c00000003e183e80] [c00000000001110c] .cpu_idle+0x10c/0x1e8 [c00000003e183f00] [c00000000002b5b0] .start_secondary+0x1b4/0x1d8 [c00000003e183f90] [c0000000000083c4] .start_secondary_prolog+0xc/0x10 ipr: 0:0:3:0: 8150: PCI bus error ipr: IOASA Dump: ipr: 00000000: 04418000 009000D0 0006FFD0 00000000 ipr: 00000010: 00000000 00000000 00000000 00000000 ipr: 00000020: 01060000 D0001814 01062A00 000F531E ipr: 00000030: 00040000 00000000 303800B6 00000000 ipr: 00000040: 00000000 04060000 00CCDDDD AABBCCCC ipr: 00000050: 0006FFD0 6800FFD0 7FFF0030 B9000010 ipr: 00000060: 40000000 80000800 08200000 000013FE ipr: 00000070: 00000000 00000000 8C00000E 00000000 ipr: 00000080: 00000000 00000000 00000000 00000000 -- Warm Regards, Balbir Singh Linux Technology Center IBM, ISTL - To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html