linux-kernel - Loading initrd above 4G causes freeze on boot

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Date:	Sat, 09 Aug 2014 17:23:43 +0300
From:	Mantas Mikulėnas <grawity@...il.com>
To:	linux-kernel@...r.kernel.org, linux-efi@...r.kernel.org
CC:	Yinghai Lu <yinghai@...nel.org>
Subject: Loading initrd above 4G causes freeze on boot

As of commit 4bf7111f5016 ("x86/efi: Support initrd loaded above 4G"),
the kernel freezes at the earliest possible moment when trying to boot
via UEFI on my Asus laptop. (It still boots via BIOS.)

If I revert that commit on current master (c309bfa9b481), it boots
correctly again [although I see "setup_efi_pci() failed" being printed].

(Seems like it freezes when handle_cmdline_files() attempts to read
the last chunk of the initramfs -- the last call to efi_file_read()
never returns. Figuring out why that happens is beyond me, though.)

-- 
Mantas Mikulėnas <grawity@...il.com>
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