Re: [bisected, regression] 3.17-rc2 kernel doesn't load initramfs with EFI stub boot

From: Calvin Walton
Date: Mon Sep 01 2014 - 14:59:49 EST


On Mon, 2014-09-01 at 19:42 +0100, Matt Fleming wrote:
> On Wed, 27 Aug, at 12:02:37PM, Calvin Walton wrote:
> > Hi all,
> >
> > When I tried booting the 3.17-rc2 kernel on my Lenovo ThinkPad
> > T440p
> > (16gb ram) via Gummiboot/EFI stub, it failed with an error saying
> > that
> > it could not mount root. A little investigation revealed that the
> > initramfs did not load, so mounting by filesystem UUID failed.
> > I've bisected the change, and it has led me to:
> >
> > 4bf7111f50167133a71c23530ca852a41355e739 is the first bad commit
> > commit 4bf7111f50167133a71c23530ca852a41355e739
> > Author: Yinghai Lu <yinghai@xxxxxxxxxx>
> > Date: Sat Jun 14 12:23:41 2014 -0700
> >
> > x86/efi: Support initrd loaded above 4G
>
> Thanks for reporting this. Could you try the below commit and see
> whether it fixes things for you?
>
> http://article.gmane.org/gmane.linux.kernel.efi/4524

With Yinghai Lu's patch from the linked message, my ThinkPad is now
booting correctly. (Admittedly using a rather "small" 7MB intramfs - I
don't have any >2GB ones handy).

Feel free to take a
Tested-by: Calvin Walton <calvin.walton@xxxxxxxxxx>

Thanks!


--
Calvin Walton <calvin.walton@xxxxxxxxxx>
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