From 6f3814cd2fb5ea4d53a7fa5b0635d68fa4036c1b Mon Sep 17 00:00:00 2001 From: Andi Kleen Date: Fri, 3 Feb 2006 21:50:53 +0100 Subject: [PATCH] [PATCH] x86_64: Automatically enable apicmaintimer on ATI boards They all have problems with IRQ 0 routing, so just use the APIC on them. Can be overwritten with "noapicmaintimer" Signed-off-by: Andi Kleen Signed-off-by: Linus Torvalds --- arch/x86_64/kernel/io_apic.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index 1a5060b434..4282d72b2a 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -304,6 +304,14 @@ void __init check_ioapic(void) #endif /* RED-PEN skip them on mptables too? */ return; + case PCI_VENDOR_ID_ATI: + if (apic_runs_main_timer != 0) + break; + printk(KERN_INFO + "ATI board detected. Using APIC/PM timer.\n"); + apic_runs_main_timer = 1; + nohpet = 1; + return; } /* No multi-function device? */ -- 2.39.2