linux-kernel - Re: PCI MSI breaks when booting with nosmp

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Date:	Tue, 22 Apr 2008 15:27:02 +0200
From:	Jean Delvare <jdelvare@...e.de>
To:	Jesse Barnes <jbarnes@...tuousgeek.org>
Cc:	Andi Kleen <andi@...stfloor.org>,
	linux-pci@...ey.karlin.mff.cuni.cz,
	LKML <linux-kernel@...r.kernel.org>, Pavel Machek <pavel@....cz>,
	Tejun Heo <htejun@...il.com>,
	Tom Long Nguyen <tom.l.nguyen@...el.com>,
	Randy Dunlap <rdunlap@...otime.net>,
	Jeff Garzik <jgarzik@...ox.com>
Subject: Re: PCI MSI breaks when booting with nosmp

Hi Jesse,

Le lundi 21 avril 2008, Jesse Barnes a écrit :
> This might be closer to a real fix.  Can you confirm that this works for you 
> Jean?
> 
> Thanks,
> Jesse
> 
> diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
> index e6abe8a..7cdf930 100644
> --- a/arch/x86/kernel/smpboot.c
> +++ b/arch/x86/kernel/smpboot.c
> @@ -1138,14 +1138,10 @@ static int __init smp_sanity_check(unsigned max_cpus)
>  				 "forcing use of dummy APIC emulation.\n");
>  		smpboot_clear_io_apic();
>  #ifdef CONFIG_X86_32
> -		if (nmi_watchdog == NMI_LOCAL_APIC) {
> -			printk(KERN_INFO "activating minimal APIC for"
> -					 "NMI watchdog use.\n");
> -			connect_bsp_APIC();
> -			setup_local_APIC();
> -			end_local_APIC_setup();
> -		}
> +		connect_bsp_APIC();
>  #endif
> +		setup_local_APIC();
> +		end_local_APIC_setup();
>  		return -1;
>  	}
>  
> 

What tree is this patch against? I have no arch/x86/kernel/smpboot.c
in 2.6.25.

-- 
Jean Delvare
Suse L3
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