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From: Vladimir Grebenschikov <vova@fbsd.ru>
To: Nate Lawson <njl@FreeBSD.org>
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Subject: Re: cvs commit: src/sys/dev/acpica acpi_perf.c
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=F7 =D7=D3, 20/03/2005 =D7 03:51 +0000, Nate Lawson =D0=C9=DB=C5=D4:
>njl         2005-03-20 03:51:18 UTC
>
>  FreeBSD src repository
>
>  Modified files:
>    sys/dev/acpica       acpi_perf.c=20
>  Log:
>  Attach acpi_perf early.  Especially when it is being used to provide inf=
o
>  to other devices, it needs to be attached first.  (Multi-pass newbus
>  probes would be a better solution.)
> =20
>  Revision  Changes    Path
>  1.16      +6 -1      src/sys/dev/acpica/acpi_perf.c

I guess this patch makes panic on my notebook:

cpu0: <ACPI CPU (2 Cx states)> on acpi0
acpi_perf0: <ACPI CPU Frequency Control> on cpu0
acpi_perf0: failed in PERF_STATUS attach
device_attach: acpi_perf0 attach returned 6
panic: resource_list_add: resource entry is busy
KDB: enter: panic
[thread pid 0 tid 0 ]
Stopped at kdb_enter+0x2c: leave
db> trace
Tracing pid 0 tid 0 td 0xc064c160
kdb_enter() at kdb_enter+0x2c
panic() at panic+0x122
resource_list_add(c1a5b710,4,0,b2,b3) at resource_list_add+0x7f
bus_generic_rl_set_resource(...) at bus_generic_rl_set_resource+0x60
bus_set_resource(...) at bus_set_resource+0x4c
acpi_bus_alloc_gas(...) at acpi_bus_alloc_gas+0x93
acpi_PkgGas(...) at acpi_PkgGas+0x4e
acpi_perf_probe(...) at acpi_perf_probe+0xea
device_probe_and_attach(...) at device_probe_and_attach+0xf8
bus_generic_attach(...) at bus_generic_attach+0x12
acpi_cpu_attach(...) at acpi_cpu_attach+0x2a1
...

How to fix that ?=20

--=20
Vladimir B. Grebenchikov
vova@fbsd.ru