From fb79d22e1d4b06385796cc0db0084a2e07beccee Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Fri, 12 Oct 2007 23:04:07 +0200 Subject: x86: disable apic timer for AMD C1E enabled CPUs AMDs C1E enabled CPUs stop the local apic timer, when both cores are idle. This is a hardware feature which breaks highres/dynticks. Add the same quirk as we have for 32 bit already. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar Signed-off-by: Arjan van de Ven --- include/asm-x86/apic_64.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include/asm-x86') diff --git a/include/asm-x86/apic_64.h b/include/asm-x86/apic_64.h index 81335e95365..f32f654d1f9 100644 --- a/include/asm-x86/apic_64.h +++ b/include/asm-x86/apic_64.h @@ -19,6 +19,7 @@ extern int apic_verbosity; extern int apic_runs_main_timer; extern int ioapic_force; +extern int disable_apic_timer; /* * Define the default level of output to be very little -- cgit v1.2.3