Philippe Gerum wrote:
[EMAIL PROTECTED] wrote:Found it. Could you give this patch a try and report the result?http://permalink.gmane.org/gmane.linux.kernel/682362Applied and tested, no luck... I-pipe: Detected illicit call from domain 'RTAI' into a service reserved for domain 'Linux' and below. Pid: 0, comm: swapper Not tainted 2.6.26.2-FuCS #1 [<c0156866>] ipipe_check_context+0xd6/0xf0 e1000: rteth0: e1000_watchdog: NIC Link is Up 1000 Mbps Full Duplex [<c03e206e>] _spin_lock_irqsave+0x1e/0x80 [<c024a7a6>] pci_bus_read_config_word+0x36/0x80 [<c0254156>] __msi_set_enable+0x46/0x80 [<c01176f3>] ? mcount+0x1f/0x23 [<c0254498>] msi_set_mask_bits+0xd8/0xe0 [<c01176f3>] ? mcount+0x1f/0x23 [<c0254737>] unmask_msi_irq+0x17/0x30 [<c01542da>] default_enable+0x1a/0x30 [<f892f1ee>] rt_enable_irq+0xe/0x10 [rtai_hal] [<f8dabd99>] ? xnintr_irq_handler+0x149/0x1f0 [rtai_rtdm] [<f893164b>] rtai_hirq_dispatcher+0xfb/0x430 [rtai_hal] [<c01021c5>] default_idle+0x45/0x60 [<c0102180>] default_idle+0x0/0x60 [<c0103cc7>] common_interrupt+0x2f/0x54 [<c0102180>] default_idle+0x0/0x60 [<c01500d8>] cgroup_file_write+0x118/0x140 [<c01021c5>] default_idle+0x45/0x60 [<c0101b76>] cpu_idle+0x86/0x140 [<c03dd7fd>] start_secondary+0x16d/0x210 [<c03d3a88>] initialize_secondary+0x8/0x20 ======================= I-pipe tracer log (100 points):| +*func 0 ipipe_trace_panic_freeze+0x9I see no option aside of ironing the inner code that reads/writes the PCI config, so here is an ugly yet possible solution for x86, that might work (totally untested):
Very ugly. There is potentially some heavy code under this lock. Wouldn't it be better to switch to soft-disabling directly, also given that not all devices will support that method anyway?
Jan
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