linux-kernel - Re: [PATCH 05/13] vmcore: modify ELF32 code according to new type

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Date:	Fri, 15 Feb 2013 10:30:48 -0500
From:	Vivek Goyal <vgoyal@...hat.com>
To:	HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
Cc:	ebiederm@...ssion.com, cpw@....com,
	kumagai-atsushi@....nes.nec.co.jp, lisa.mitchell@...com,
	kexec@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 05/13] vmcore: modify ELF32 code according to new type

On Thu, Feb 14, 2013 at 07:12:10PM +0900, HATAYAMA Daisuke wrote:
> On elf32 mmap() is not supported. All vmcore objects are in old
> memory.

This is odd. Why can't we support mmap() when 32bit headers have been
prepared?

Thanks
Vivek

> 
> Signed-off-by: HATAYAMA Daisuke <d.hatayama@...fujitsu.com>
> ---
> 
>  fs/proc/vmcore.c |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
> index 43d338a..7e3f922 100644
> --- a/fs/proc/vmcore.c
> +++ b/fs/proc/vmcore.c
> @@ -389,6 +389,7 @@ static int __init merge_note_headers_elf32(char *elfptr, size_t *elfsz,
>  			kfree(notes_section);
>  			return -ENOMEM;
>  		}
> +		new->type = VMCORE_OLD_MEMORY;
>  		new->paddr = phdr_ptr->p_offset;
>  		new->size = real_sz;
>  		list_add_tail(&new->list, vc_list);
> @@ -486,6 +487,7 @@ static int __init process_ptload_program_headers_elf32(char *elfptr,
>  		new = get_new_element();
>  		if (!new)
>  			return -ENOMEM;
> +		new->type = VMCORE_OLD_MEMORY;
>  		new->paddr = phdr_ptr->p_offset;
>  		new->size = phdr_ptr->p_memsz;
>  		list_add_tail(&new->list, vc_list);
--
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