Date: Mon, 6 Aug 2012 22:32:08 -0400
From: =?UTF-8?B?SsOpcsO0bWU=?= Carretero <cJ-ko@zougloub.eu>
To: "Jan Beulich" <JBeulich@suse.com>
Cc: "Matthew Garrett" <mjg59@srcf.ucam.org>, "Ingo Molnar" <mingo@kernel.org>,
        "Matt Fleming" <matt.fleming@linux.intel.com>,
        <linux-efi@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: [Regression] "x86-64/efi: Use EFI to deal with platform wall
 clock" prevents my machine from booting
Message-ID: <20120806223208.5301be0d@zougloub.eu>
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 <20120806125216.GA11863@srcf.ucam.org>
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On Mon, 6 Aug 2012 09:16:27 -0400
Jérôme Carretero <cJ-ko@zougloub.eu> wrote:

> - I can bisect the patch further down (might be a bit silly because
>   I don't quite understand it),

For troubleshooting purposes I edited over your patch.
So far:

- (in arch/x86/platform/efi/efi.c) when making efi_get_time()
  return mach_get_cmos_time(), the system boots.

- then I tried to return mach_get_cmos_time() when efi.get_time()
  fails, ie. if (status != EFI_SUCCESS).
  The system does not boot: efi.get_time(), aka virt_efi_get_time(),
  does not return.

Maybe I can get more...

-- 
cJ
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