linux-kernel - Re: [PATCH]X86:reboot.c Add some dmi entries to pci_reboot_dmi

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Message-ID: <20100603021851.GA19546@srcf.ucam.org>
Date:	Thu, 3 Jun 2010 03:18:51 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	"Justin P. Mattock" <justinmattock@...il.com>
Cc:	Robert Hancock <hancockrwd@...il.com>, x86@...nel.org,
	tglx@...utronix.de, linux-kernel@...r.kernel.org
Subject: Re: [PATCH]X86:reboot.c Add some dmi entries to
	pci_reboot_dmi_table.

On Wed, Jun 02, 2010 at 07:15:36PM -0700, Justin P. Mattock wrote:
> as soon as I change:
>
> int main() {
> 	iopl(3);
> 	outb(6, 0xcf9);
> 	usleep(100);
> 	outb(6, 0xcf9);
> 	return 0;
> }
> (the above gave a command prompt
> with numerous tries)

Ok, so it's not that straghtforward. Sigh. There's various hacky 
workarounds we could do here, but Windows doesn't seem to do them so I 
lean towards suspecting that there's something wrong with our keyboard 
controller reboot mechanism. I'll try doing some more tracing.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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