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Date:      Mon, 16 May 2016 12:27:31 +0200
From:      Gary Jennejohn <gljennjohn@gmail.com>
To:        current@FreeBSD.org
Subject:   Re: EARLY_AP_STARTUP hangs during boot
Message-ID:  <20160516122731.65a8614a@ernst.home>
In-Reply-To: <20160516122242.39249a54@ernst.home>
References:  <20160516122242.39249a54@ernst.home>

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On Mon, 16 May 2016 12:22:42 +0200
Gary Jennejohn <gljennjohn@gmail.com> wrote:

> I tried out EARLY_AP_STARTUP, but the kernel hangs and I can't
> break into DDB.
> 
> I did a verbose boot and the last lines I see are related to routing
> MSI-X to various local APIC vectors.  I copied the last few lines and
> they look like this:
> 
> msi: routing MSI-X IRQ 256 to local APIC 2 vector 48
> msi: routing MSI-X IRQ 257 to local APIC 3 vector 48
> msi: routing MSI-X IRQ 258 to local APIC 4 vector 48
> msi: routing MSI-X IRQ 256 to local APIC 0 vector 49

Oops, the the last line should read
msi: Assigning MSI-X IRQ 256 to local APIC 0 vector 49

> I tried disabling msi and msix in /boot/loader.conf, but the settings
> were ignored (probabaly too early).
> 
> I'm running on a AMD Phenom(tm) II X6 1090T Processor.
> 
> So, maybe this option only really works correctly on Intel CPUs?
> 

-- 
Gary Jennejohn



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