linux-kernel - Re: HPET regression in 2.6.26 versus 2.6.25 -- found another user with the same regression

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Message-ID: <20080820091513.GA23865@elte.hu>
Date:	Wed, 20 Aug 2008 11:15:13 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	Yinghai Lu <yhlu.kernel@...il.com>
Cc:	Bill Fink <billfink@...dspring.com>,
	David Witbrodt <dawitbro@...global.net>,
	linux-kernel@...r.kernel.org,
	"Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>, netdev <netdev@...r.kernel.org>
Subject: Re: HPET regression in 2.6.26 versus 2.6.25 -- found another user
	with the same regression


* Yinghai Lu <yhlu.kernel@...il.com> wrote:

> > This is true if he reverted just the 3def3d6d... commit, but if he 
> > also reverts the similar, and immediately following, 1e934dda... 
> > commit, then his 2.6.26 kernel runs fine.
> 
> interesting,
> 
> David, can you try only comment out
> 
> late_initcall(lapic_insert_resource);

i.e. the patch below?

what's your theory, what could be the reason for David's lockups?

	Ingo

--------------->
Index: linux/arch/x86/kernel/apic_32.c
===================================================================
--- linux.orig/arch/x86/kernel/apic_32.c
+++ linux/arch/x86/kernel/apic_32.c
@@ -1740,4 +1740,4 @@ static int __init lapic_insert_resource(
  * need call insert after e820_reserve_resources()
  * that is using request_resource
  */
-late_initcall(lapic_insert_resource);
+//late_initcall(lapic_insert_resource);
Index: linux/arch/x86/kernel/apic_64.c
===================================================================
--- linux.orig/arch/x86/kernel/apic_64.c
+++ linux/arch/x86/kernel/apic_64.c
@@ -1614,4 +1614,4 @@ static int __init lapic_insert_resource(
  * need call insert after e820_reserve_resources()
  * that is using request_resource
  */
-late_initcall(lapic_insert_resource);
+//late_initcall(lapic_insert_resource);

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