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Date: Sat, 16 Oct 2010 03:46:46 -0400 (EDT) From: Len Brown <lenb@...nel.org> To: linux-kernel@...r.kernel.org, tsi@...berta.ca Subject: Re: x86_64 2.6.35.* kernels and Intel Xeon X5550 > > On the Xeon's, 2.6.35 hangs early on, upon the first test of trace events > > (in kernel/trace/trace_events.c:event_trace_self_tests()). When disabling > > all tracing, debugging, etc., it still hangs but slightly later. The > > megaraid_sas module is loaded, detects the adapter, but never gets around to > > registering it with the SCSI layer. > This is due to "CONFIG_INTEL_IDLE=y". Please file a bug report at bugzilla.kernel.org and assign it to me. Please reproduce using an upstream 2.6.36-rc8 kernel. Boot a CONFIG_INTEL_IDLE=n kernel and to the bug report... attach the output from acpidump 'cat /proc/cpuinfo' 'grep . /sys/devices/system/cpu/cpu*/cpuidle/*/*' 'lspci' Then boot a CONFIG_INTEL_IDLE=y kernel and see what is the highest N that boots when you boot with "intel_idle.max_cstate=N" (0 will disable the driver completely) and if any of them boot, for the highest N, attach to the bug report the complete dmesg and the output from 'grep . /sys/devices/system/cpu/cpu*/cpuidle/*/*' thanks, -Len Brown, Intel Open Source Technology Center -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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