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

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Date:	Fri, 05 Sep 2014 21:20:25 +0200
From:	Laszlo Ersek <lersek@...hat.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Anders Darander <anders@...rgestorm.se>,
	Matt Fleming <matt@...sole-pimps.org>,
	Mantas Mikulėnas <grawity@...il.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Matt Fleming <matt.fleming@...el.com>,
	Ingo Molnar <mingo@...hat.com>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH -v4] x86: only load initrd above 4g on second try

On 09/05/14 19:03, Yinghai Lu wrote:
> On Thu, Sep 4, 2014 at 11:38 PM, Laszlo Ersek <lersek@...hat.com> wrote:
>> On 09/05/14 07:47, Anders Darander wrote:
>> In other words, the rounding up of the kernel will be undone in a
>> "somewhat higher level" driver in the firmware, and the request size
>> that reaches DiskIo (the "lowel level driver") remains the same.
> 
> Thanks for explanation.
> 
> Is there any way to check if EFI firmware have your fix from some calling?

I can't think of any, alas.

It might make sense to contact Mantas's and Anders's UEFI vendors; after
all a reliable reproducer is available.

Thanks,
Laszlo

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