On Sun, 2009-03-29 at 18:30 +0800, Roel Kluin wrote: > Hi, > > I got this warning during boot: > > powernow-k8: Found 1 AMD Athlon(tm) 64 X2 Dual Core Processor 5000+ processors (2 cpu cores) (version 2.20.00) > ------------[ cut here ]------------ > WARNING: at /home/roel/dnld/src/kernel/git/linux-2.6/arch/x86/kernel/cpu/cpufreq/powernow-k8.c:1254 powernowk8_cpu_init+0x500/0xad0() > Hardware name: MS-7369 > [Firmware Bug]: powernow-k8: Your BIOS does not provide ACPI _PSS objects in a way that Linux understands. Please report this to the Linux ACPI maintainers and complain to your BIOS vendor. Hi, From the log it seems that there is no _PSS object , which is required by the powernow-k8 cpufreq. IMO the warning message is reasonable. We have seen this issue on a lot of machines based on AMD platforms. And this issue had better be fixed by BIOS upgrading. > Modules linked in: > Pid: 1, comm: swapper Not tainted 2.6.29-smp #1 Is the following dump stack message reported on vanilla kernel ? Or is it reported by adding the function of dump_stack? Thanks. > Call Trace: > [<c012c466>] warn_slowpath+0x86/0xa0 > [<c0300ae5>] ? acpi_ns_get_node+0x7a/0x84 > [<c0300ae5>] ? acpi_ns_get_node+0x7a/0x84 > [<c0124870>] ? default_wake_function+0x0/0x10 > [<c0120f56>] ? task_rq_lock+0x66/0x90 > [<c0300d54>] ? acpi_get_handle+0x6c/0x8e > [<c03125ad>] ? acpi_processor_register_performance+0x397/0x3b2 > [<c047f2c2>] ? _cond_resched+0x22/0x50 > [<c018f48b>] ? kmem_cache_alloc+0x8b/0xd0 > [<c047a59e>] ? powernowk8_cpu_init+0x4e/0xad0 > [<c047aa50>] powernowk8_cpu_init+0x500/0xad0 > [<c012677f>] ? finish_task_switch+0xaf/0xf0 > [<c047f2c2>] ? _cond_resched+0x22/0x50 > [<c047f2c2>] ? _cond_resched+0x22/0x50 > [<c047ff0b>] ? down_write+0xb/0x30 > [<c03cd970>] ? lock_policy_rwsem_write+0x70/0xa0 > [<c03cdcf9>] cpufreq_add_dev+0x1c9/0x5f0 > [<c032dc80>] ? vt_console_print+0x0/0x2a0 > [<c0144176>] ? up+0x46/0x60 > [<c012cc29>] ? release_console_sem+0x209/0x210 > [<c0120f56>] ? task_rq_lock+0x66/0x90 > [<c02c3f87>] ? kref_get+0x37/0x60 > [<c01273ee>] ? set_cpus_allowed_ptr+0xae/0x120 > [<c033c025>] sysdev_driver_register+0x75/0x120 > [<c047a550>] ? powernowk8_cpu_init+0x0/0xad0 > [<c03ce5a6>] cpufreq_register_driver+0x86/0x140 > [<c047a537>] powernowk8_init+0x87/0xa0 > [<c047a4b0>] ? powernowk8_init+0x0/0xa0 > [<c0101114>] do_one_initcall+0x24/0x150 > [<c01d46c4>] ? create_proc_entry+0x54/0xa0 > [<c015c5e2>] ? register_irq_proc+0xa2/0xc0 > [<c015c665>] ? init_irq_proc+0x65/0x80 > [<c0618662>] kernel_init+0x122/0x180 > [<c0618540>] ? kernel_init+0x0/0x180 > [<c0103cdb>] kernel_thread_helper+0x7/0x1c > ---[ end trace f7b2fa9171ecaaac ]--- > dmesg and .config are attached -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
