linux-kernel - Re: [PATCH] Fix VMI crash on boot in 2.6.27+ kernels

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Date:	Wed, 10 Dec 2008 19:31:05 -0800
From:	Greg KH <gregkh@...e.de>
To:	Yinghai Lu <yinghai@...nel.org>
Cc:	Zachary Amsden <zach@...are.com>,
	Huang Ying <ying.huang@...el.com>,
	Jeremy Fitzhardinge <jeremy@...p.org>,
	"H. Peter Anvin" <hpa@...or.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	"norman@...backs.co.uk" <norman@...backs.co.uk>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Alok Kataria <alokkataria1@...il.com>,
	<bruno.premont@...tena.lu>, "xl@...igned.net" <xl@...igned.net>,
	"dsd@...too.org" <dsd@...too.org>
Subject: Re: [PATCH] Fix VMI crash on boot in 2.6.27+ kernels

On Wed, Dec 10, 2008 at 04:20:06PM -0800, Yinghai Lu wrote:
> Zachary Amsden wrote:
> > On Tue, 2008-12-09 at 17:15 -0800, Yinghai Lu wrote:
> > 
> >> you can not move that late,
> >>
> >> parse_setup_data==>early_memremap==>__early_ioremap
> > 
> > How does this look?
> > 
> 
> diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
> index 9d5674f..4c381cb 100644
> --- a/arch/x86/kernel/setup.c
> +++ b/arch/x86/kernel/setup.c
> @@ -794,6 +794,11 @@ void __init setup_arch(char **cmdline_p)
>  	printk(KERN_INFO "Command line: %s\n", boot_command_line);
>  #endif
>  
> +#ifdef CONFIG_VMI
> +	/* VMI may relocate the fixmap; do this before touching ioremap area */
> +	vmi_init();
> +#endif

Shouldn't the #ifdef not be needed here if the .h files are set up
properly for the vmi_init prototype?  Please try to keep them out of .c
files wherever possible.

thanks,

greg k-h
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