Messages in this thread | | | Date | Tue, 19 May 2009 14:55:10 +0200 (CEST) | From | Thomas Gleixner <> | Subject | Re: [PATCH 1/2]cpuidle: makes AMD C1E works in acpi_idle |
| |
On Tue, 19 May 2009, Shaohua Li wrote:
> When AMD C1E is enabled, local APIC timer will stop even in C1. This patch uses > broadcast ipi to replace local APIC timer in C1. > > http://bugzilla.kernel.org/show_bug.cgi?id=13233
Hmm. This was addressed before in
commit a8d6829044901a67732904be5f1eacdf8539604f (x86: prevent C-states hang on AMD C1E enabled machines)
We limit C-States to 1 via acpi_processor_cstate_check().
And we have the broadcast logic in c1e_idle() already. We also select c1e_idle as the idle routine, so why is the ACPI code not using this. ?
Thanks,
tglx
| |