linux-kernel - Re: [PATCH] export efi.flags to sysfs

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Message-ID: <20140528094712.GL2820@darkstar.nay.redhat.com>
Date:	Wed, 28 May 2014 17:47:12 +0800
From:	Dave Young <dyoung@...hat.com>
To:	"Fleming, Matt" <matt.fleming@...el.com>
Cc:	"bp@...en8.de" <bp@...en8.de>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-efi@...r.kernel.org" <linux-efi@...r.kernel.org>,
	vgoyal@...hat.com, Alex Thorlton <athorlton@....com>
Subject: Re: [PATCH] export efi.flags to sysfs

Add Alex to cc

> > The 1:1 mapping was required to make kexec + EFI work in the first
> > instance. If a machine implements the EFI 1:1 mapping, kexec should
> > work. If it doesn't implement the 1:1 mapping, then it's probably not
> > going to work, right?
> > 
> > The crux of the question: are you trying to fix a regression?
> > 
> > If not, then we just need to get SGI UV working with the EFI 1:1
> > mapping. No?

Alex is working on a SGI UV fix for 1:1 mapping.
Question to Alex, if userspace can get the firmware version there might
be another option that kexec-tools checking the firmware version and
switch to old noefi way automaticlly. Is it doable?

Thanks
Dave
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