linux-kernel - Re: [PATCH v2 09/22] ARM: LPAE: use phys_addr

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Date:	Sat, 11 Aug 2012 23:58:41 -0400 (EDT)
From:	Nicolas Pitre <nicolas.pitre@...aro.org>
To:	Cyril Chemparathy <cyril@...com>
cc:	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	arnd@...db.de, catalin.marinas@....com, grant.likely@...retlab.ca,
	linux@....linux.org.uk, will.deacon@....com,
	Vitaly Andrianov <vitalya@...com>
Subject: Re: [PATCH v2 09/22] ARM: LPAE: use phys_addr_t for initrd location
 and size

On Fri, 10 Aug 2012, Cyril Chemparathy wrote:

> From: Vitaly Andrianov <vitalya@...com>
> 
> This patch fixes the initrd setup code to use phys_addr_t instead of assuming
> 32-bit addressing.  Without this we cannot boot on systems where initrd is
> located above the 4G physical address limit.
> 
> Signed-off-by: Vitaly Andrianov <vitalya@...com>
> Signed-off-by: Cyril Chemparathy <cyril@...com>

Acked-by: Nicolas Pitre <nico@...aro.org>

> ---
>  arch/arm/mm/init.c |   13 +++++++------
>  1 file changed, 7 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm/mm/init.c b/arch/arm/mm/init.c
> index 19ba70b..bae9d05 100644
> --- a/arch/arm/mm/init.c
> +++ b/arch/arm/mm/init.c
> @@ -36,12 +36,13 @@
>  
>  #include "mm.h"
>  
> -static unsigned long phys_initrd_start __initdata = 0;
> +static phys_addr_t phys_initrd_start __initdata = 0;
>  static unsigned long phys_initrd_size __initdata = 0;
>  
>  static int __init early_initrd(char *p)
>  {
> -	unsigned long start, size;
> +	phys_addr_t start;
> +	unsigned long size;
>  	char *endp;
>  
>  	start = memparse(p, &endp);
> @@ -347,14 +348,14 @@ void __init arm_memblock_init(struct meminfo *mi, struct machine_desc *mdesc)
>  #ifdef CONFIG_BLK_DEV_INITRD
>  	if (phys_initrd_size &&
>  	    !memblock_is_region_memory(phys_initrd_start, phys_initrd_size)) {
> -		pr_err("INITRD: 0x%08lx+0x%08lx is not a memory region - disabling initrd\n",
> -		       phys_initrd_start, phys_initrd_size);
> +		pr_err("INITRD: 0x%08llx+0x%08lx is not a memory region - disabling initrd\n",
> +		       (u64)phys_initrd_start, phys_initrd_size);
>  		phys_initrd_start = phys_initrd_size = 0;
>  	}
>  	if (phys_initrd_size &&
>  	    memblock_is_region_reserved(phys_initrd_start, phys_initrd_size)) {
> -		pr_err("INITRD: 0x%08lx+0x%08lx overlaps in-use memory region - disabling initrd\n",
> -		       phys_initrd_start, phys_initrd_size);
> +		pr_err("INITRD: 0x%08llx+0x%08lx overlaps in-use memory region - disabling initrd\n",
> +		       (u64)phys_initrd_start, phys_initrd_size);
>  		phys_initrd_start = phys_initrd_size = 0;
>  	}
>  	if (phys_initrd_size) {
> -- 
> 1.7.9.5
> 
--
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