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Date: Wed, 04 Mar 2015 17:18:12 -0600
From: Timur Tabi <timur@codeaurora.org>
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To: Ard Biesheuvel <ard.biesheuvel@linaro.org>
CC: Hanjun Guo <hanjun.guo@linaro.org>,
        Catalin Marinas <catalin.marinas@arm.com>,
        "Rafael J. Wysocki" <rjw@rjwysocki.net>,
        Will Deacon <will.deacon@arm.com>, Olof Johansson <olof@lixom.net>,
        Grant Likely <grant.likely@linaro.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Ashwin Chaugule <ashwinc@codeaurora.org>,
        Lorenzo Pieralisi <Lorenzo.Pieralisi@arm.com>,
        Robert Richter <rric@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
        Graeme Gregory <graeme.gregory@linaro.org>,
        Linaro ACPI Mailman List <linaro-acpi@lists.linaro.org>,
        Marc Zyngier <marc.zyngier@arm.com>, Jon Masters <jcm@redhat.com>,
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        Suravee Suthikulpanit <suravee.suthikulpanit@amd.com>,
        Sudeep Holla <Sudeep.Holla@arm.com>,
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	<linux-arm-kernel@lists.infradead.org>
Subject: Re: [PATCH v9 00/21] Introduce ACPI for ARM64 based on ACPI 5.1
References: <1424853601-6675-1-git-send-email-hanjun.guo@linaro.org>	<54EFE282.1090305@codeaurora.org> <CAKv+Gu-LxaX6X=qApp=zhzfmNfv=tjfscf9npFCpNW314pZvvg@mail.gmail.com>
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On 02/27/2015 02:50 AM, Ard Biesheuvel wrote:
> Are you not seeing this on v4.0-rc1 without the patchset applied?
>
> Could the crash be inside the subsequent call to
> SetVirtualAddressMap() instead of inside ExitBootServices()?
>
> If so, you have a firmware bug: Mark Rutland spotted a similar bug in
> the AMD Seattle firmware, which has been fixed in the mean time.
> It has to do with the firmware dereferencing the virtual mapping as it
> is being installed, which violates the UEFI spec.

It looks like you are right.  We fixed the bug in our UEFI and now this 
patchset works.

So all 21 patches:

Tested-by: Timur Tabi <timur@codeaurora.org>


However, I did notice one thing.  Booting the kernel displays this line:

	[   69.424001] Failed to find cpu0 device node

That's because CONFIG_OF is still defined (part of "config ARM64"), and 
therefore cache_setup_of_node() attempts to get the cache information 
from the device tree.

Should CONFIG_OF still be defined?

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