From: Matt Fleming <matt.fleming@intel.com>
Date: Thu, 10 Apr 2014 12:30:13 +0000 (+0100)
Subject: x86/efi: Fix boot failure with EFI stub
X-Git-Tag: v3.15-rc1~30^2~1^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=396f1a08db212138418b38f784e4bbe516d2fdb2;p=pandora-kernel.git

x86/efi: Fix boot failure with EFI stub

commit 54b52d872680 ("x86/efi: Build our own EFI services pointer
table") introduced a regression because the 64-bit file_size()
implementation passed a pointer to a 32-bit data object, instead of a
pointer to a 64-bit object.

Because the firmware treats the object as 64-bits regardless it was
reading random values from the stack for the upper 32-bits.

This resulted in people being unable to boot their machines, after
seeing the following error messages,

    Failed to get file info size
    Failed to alloc highmem for files

Reported-by: Dzmitry Sledneu <dzmitry.sledneu@gmail.com>
Reported-by: Koen Kooi <koen@dominion.thruhere.net>
Tested-by: Koen Kooi <koen@dominion.thruhere.net>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
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