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Date: Sun, 2 Mar 2014 02:23:34 +0000
From: Matthew Garrett <mjg59@srcf.ucam.org>
To: "H. Peter Anvin" <hpa@zytor.com>
Cc: "Li, Aubrey" <aubrey.li@linux.intel.com>,
        "H. Peter Anvin" <hpa@linux.intel.com>,
        "alan@linux.intel.com" <alan@linux.intel.com>,
        linux-kernel@vger.kernel.org, Len.Brown@intel.com,
        Adam Williamson <awilliam@redhat.com>
Subject: Re: [patch] x86: Introduce BOOT_EFI and BOOT_CF9 into the reboot
 sequence loop
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On Sat, Mar 01, 2014 at 06:07:18PM -0800, H. Peter Anvin wrote:

> We obviously have been over this a number of times, and the sad thing is
> that we have very limited information.  It is more complex than that,
> even... I believe in some cases KBD works but it is slow, and so takes a
> while.

And we still have the problem that the keyboard controller sometimes 
triggers SMM and that then hangs when it hits a piece of hardware in a 
state it doesn't expect. Sometimes reboot=b or reboot=p is just working 
around some assumptions that we could fix more convincingly.

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