On Fri, 2007-03-23 at 17:19 +0100, Jean Delvare wrote: > Hi all, > > 2.6.21-rc4-git7 doesn't work on my laptop, git6 was OK. Symptop: the > machine freezes as Xorg is started. A bisection led me there: > > 25496caec111481161e7f06bbfa12a533c43cc6f is first bad commit > commit 25496caec111481161e7f06bbfa12a533c43cc6f > Author: Thomas Renninger <[EMAIL PROTECTED]> > Date: Tue Feb 27 12:13:00 2007 -0500 > > ACPI: Only use IPI on known broken machines (AMD, Dothan/BaniasPentium M) > > Use IPI for blacklisted CPUs, add parameter IPI vs LAPIC > > Currently, Linux disables lapic timer for all machines with C2 and higher > C-state support. > > According to Intel only specific Intel models (Banias/Dothan) are broken > in respect of not waking up from C2 with lapic. > > However, I am not sure about the naming of the parameter and how it > could/should get integrated into the dyntick part > (CONFIG_GENERIC_CLOCKEVENTS). There, a more fine grained check (TSC > still running?, ..) is needed? Does this make sense (always use > CLOCK_EVT_NOTIFY_BROADCAST_ON, but use OFF if forced by use_ipi=0: > clockevents_notify(use_ipi ? CLOCK_EVT_NOTIFY_BROADCAST_ON : > CLOCK_EVT_NOTIFY_BROADCAST_OFF, &pr->id); > > Signed-off-by: Thomas Renninger <[EMAIL PROTECTED]> > Signed-off-by: Len Brown <[EMAIL PROTECTED]> > > :040000 040000 f089eab6ed1e602029c532d828e7d7a2e46e51af > d639f8aa8676fee0bf0b868fe20151712f3a530c M drivers > > My laptop's CPU is: > > processor : 0 > vendor_id : GenuineIntel > cpu family : 6 > model : 11 > model name : Intel(R) Pentium(R) III Mobile CPU 866MHz > stepping : 1 > cpu MHz : 864.500 > cache size : 512 KB > fdiv_bug : no > hlt_bug : no > f00f_bug : no > coma_bug : no > fpu : yes > fpu_exception : yes > cpuid level : 2 > wp : yes > flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov > pat pse36 mmx fxsr sse > bogomips : 1724.04 > clflush size : 32 > > Thomas, Len, any idea? I can help with testing as needed.
This one has already been found, got reverted and gets fixed by Ingo Molnar, Thomas Gleissner and Len. Thomas - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
