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From: "Rafael J. Wysocki" <rjw@rjwysocki.net>
To: Matt Fleming <matt@console-pimps.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>, joeyli <jlee@suse.com>,
        Alessandro Zummo <a.zummo@towertech.it>,
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        linux-acpi@vger.kernel.org, Borislav Petkov <bp@suse.de>
Subject: Re: [RFC PATCH 00/14] Support timezone of ACPI TAD and EFI TIME
Date: Fri, 20 Dec 2013 23:18:56 +0100
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On Friday, December 20, 2013 09:50:56 PM Matt Fleming wrote:
> On Fri, 20 Dec, at 01:43:38PM, H. Peter Anvin wrote:
> > 
> > Possibly... will have to investigate.  I would also ask if the same
> > applies to the PNP0B0x devices -- all we really need there is the
> > presence/absence indication and the I/O port base.
> 
> It's worth noting that efi_late_init() exists solely because the ACPI
> infrastructure to find the BGRT table isn't available any earlier.
> 
> If we could setup ACPI earlier that would be awesome.

I'm not sure 100%, but I *think* we need to do that with interrupts enabled.
At least after mm_init(), because it relies on things initialized there if I
remember correctly.

>>From what I can tell at the moment, it might be possible to move it before
efi_enter_virtual_mode() if that would help.

Thanks,
Rafael