linux-kernel - Re: [PATCH 5/5] lguest: loading bzImage directly

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Date:	Sat, 24 Nov 2007 22:54:10 +0100
From:	Kjartan Maraas <kmaraas@...adpark.no>
To:	Rusty Russell <rusty@...tcorp.com.au>
Cc:	Chris Malley <mail@...ismalley.co.uk>,
	lkml - Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	lguest <lguest@...abs.org>,
	James Bottomley <James.Bottomley@...senPartnership.com>,
	Vivek Goyal <vgoyal@...ibm.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Stephen Rothwell <sfr@...b.auug.org.au>
Subject: Re: [PATCH 5/5] lguest: loading bzImage directly


to., 04.10.2007 kl. 10.02 +1000, skrev Rusty Russell:
> On Wed, 2007-10-03 at 10:37 +0100, Chris Malley wrote:
> > Hi guys
> > 
> > Would it not be clearer to #include <asm/bootparam.h> and use 
> > the relevant named members of struct setup_header / struct boot_params
> > rather than the hard-coded values 0x202, 0x1F1, 0x214 ?
> 
> Yes, but unfortunately bootparam.h wasn't designed to be included from
> userspace.
> 
[snip]

This change seems to have broken build of the battstat applet in
gnome-applets or rather the included apmlib in there. Intended?

Any pointers on how to adapt the code in case it was?

> diff -r 6bb527d113a8 include/linux/apm_bios.h
> --- a/include/linux/apm_bios.h	Wed Oct 03 13:49:31 2007 +1000
> +++ b/include/linux/apm_bios.h	Thu Oct 04 09:37:28 2007 +1000
> @@ -16,28 +16,28 @@
>   * General Public License for more details.
>   */
>  
> +#include <linux/types.h>
> +
> +struct apm_bios_info {
> +	__u16	version;
> +	__u16	cseg;
> +	__u32	offset;
> +	__u16	cseg_16;
> +	__u16	dseg;
> +	__u16	flags;
> +	__u16	cseg_len;
> +	__u16	cseg_16_len;
> +	__u16	dseg_len;
> +};
> +
> +#ifdef __KERNEL__
> +
>  typedef unsigned short	apm_event_t;
>  typedef unsigned short	apm_eventinfo_t;
> -
> -#ifdef __KERNEL__
> -
> -#include <linux/types.h>
>  
>  #define APM_CS		(GDT_ENTRY_APMBIOS_BASE * 8)
>  #define APM_CS_16	(APM_CS + 8)
>  #define APM_DS		(APM_CS_16 + 8)
> -
> -struct apm_bios_info {
> -	u16	version;
> -	u16	cseg;
> -	u32	offset;
> -	u16	cseg_16;
> -	u16	dseg;
> -	u16	flags;
> -	u16	cseg_len;
> -	u16	cseg_16_len;
> -	u16	dseg_len;
> -};
>  
>  /* Results of APM Installation Check */
>  #define APM_16_BIT_SUPPORT	0x0001

Cheers
Kjartan


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