linux-kernel - Re: [PATCH 2/2] efilinux: set ext_ramdisk

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Message-ID: <20140625204700.GF15494@console-pimps.org>
Date:	Wed, 25 Jun 2014 21:47:00 +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>, linux-efi@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] efilinux: set ext_ramdisk_* for huge initrd

On Tue, 17 Jun, at 11:41:09PM, Yinghai Lu wrote:
> We could load it high if it is more than 2G when kernel support
> LOAD_ABOVE_4G.
> 
> Signed-off-by: Yinghai Lu <yinghai@...nel.org>
> 
> ---
>  loaders/bzimage/bzimage.c |    9 ++++++++-
>  loaders/bzimage/bzimage.h |    8 ++++++--
>  2 files changed, 14 insertions(+), 3 deletions(-)
> 
> Index: efilinux/loaders/bzimage/bzimage.c
> ===================================================================
> --- efilinux.orig/loaders/bzimage/bzimage.c
> +++ efilinux/loaders/bzimage/bzimage.c
> @@ -130,7 +130,9 @@ static void parse_initrd(EFI_LOADED_IMAG
>  	if (err != EFI_SUCCESS)
>  		goto close_handles;
>  
> -	if ((UINTN)addr > boot_params->hdr.ramdisk_max) {
> +	if ((boot_params->hdr.version < 0x20c ||
> +	     !(boot_params->hdr.xloadflags & (1<<1))) &&
> +	    (UINTN)addr > boot_params->hdr.ramdisk_max) {

Could you please add a #define for the xloadflags bit?

-- 
Matt Fleming, Intel Open Source Technology Center
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