linux-kernel - Re: [PATCH -v4] x86: only load initrd above 4g on second try

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Message-ID: <20140904100137.GK3001@console-pimps.org>
Date:	Thu, 4 Sep 2014 11:01:37 +0100
From:	Matt Fleming <matt@...sole-pimps.org>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Matt Fleming <matt.fleming@...el.com>,
	"H. Peter Anvin" <hpa@...or.com>, Ingo Molnar <mingo@...hat.com>,
	Mantas Mikulėnas <grawity@...il.com>,
	Anders Darander <anders@...rgestorm.se>,
	linux-efi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH -v4] x86: only load initrd above 4g on second try

On Wed, 03 Sep, at 09:50:07PM, Yinghai Lu wrote:
> Mantas found that after commit 4bf7111f5016 ("x86/efi: Support initrd
> loaded above 4G"), the kernel freezes at the earliest possible moment
> when trying to boot via UEFI on Asus laptop.
> 
> Revert to old way to load initrd under 4G on first try,
> second try will use above 4G buffer when initrd is too big
> and does not fit under 4G.
> 
> -v2: add print out for second try, and print out files buf address.
> -v3: can not snprintf
> -v4: drop address print out for files buf
> 
> Reported-by: Mantas Mikulėnas <grawity@...il.com>
> Tested-by: Anders Darander <anders@...rgestorm.se>
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> 
> ---
>  arch/x86/boot/compressed/eboot.c |   18 +++++++++++-------
>  1 file changed, 11 insertions(+), 7 deletions(-)

Thanks, I've picked this up and expanded on the commit message because a
lot of useful information was discussed on the mailing list that we
should definitely include.

  http://git.kernel.org/cgit/linux/kernel/git/mfleming/efi.git/commit/?h=urgent&id=b524e05df6d466af2f7eea1f044369109e48e641

-- 
Matt Fleming, Intel Open Source Technology Center
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