linux-kernel - Re: [PATCH] x86/boot: EFI_MIXED should not prohibit loading above 4G

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Date:	Mon, 9 Jun 2014 10:32:53 -0400
From:	Vivek Goyal <vgoyal@...hat.com>
To:	Matt Fleming <matt@...sole-pimps.org>
Cc:	"H. Peter Anvin" <hpa@...or.com>,
	LKML <linux-kernel@...r.kernel.org>, linux-efi@...r.kernel.org,
	Matt Fleming <matt.fleming@...el.com>,
	Dave Young <dyoung@...hat.com>
Subject: Re: [PATCH] x86/boot: EFI_MIXED should not prohibit loading above 4G

On Mon, Jun 09, 2014 at 03:25:59PM +0100, Matt Fleming wrote:
> On Mon, 09 Jun, at 10:15:12AM, Vivek Goyal wrote:
> > 
> > Ok, thanks. Or I can check whether EFI run time map is there or not. I am
> > assuming that efi runtime services are not enabled, then run time map
> > will not be there either.
> 
> Yes, if runtime services are unavailable then the runtime map will not
> be exported.
> 
> Now, you can check for the presence of the runtime map from userland but
> please don't use that as your check inside the kernel - this is exactly
> what efi_enabled() is for.

Ok, I will use efi_enabled() instead.

Thanks
Vivek
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