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Date: Sat, 9 Aug 2014 09:44:55 -0700 From: Yinghai Lu <yinghai@...nel.org> To: Mantas Mikulėnas <grawity@...il.com>, Matt Fleming <matt.fleming@...el.com> Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, linux-efi@...r.kernel.org Subject: Re: Loading initrd above 4G causes freeze on boot On Sat, Aug 9, 2014 at 7:23 AM, Mantas Mikulėnas <grawity@...il.com> wrote: > 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.) > Matt found that efi_file_read()/firmware has problem that could not do several reading. Please check if reverting that commit have any difference. --- I spent some time playing around with this bug and it appears to be triggered by the read-a-chunk-at-a-time logic in handle_cmdline_files(), (which is itself a bug workaround) introduced here, commit 2d2da60fb40a Author: Maarten Lankhorst <m.b.lankhorst@...il.com> Date: Fri Dec 16 13:30:58 2011 +0100 x86, efi: Break up large initrd reads --- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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