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From: Vivek Goyal <vgoyal@redhat.com>
To: HATAYAMA Daisuke <d.hatayama@jp.fujitsu.com>
Cc: kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
	lisa.mitchell@hp.com, kumagai-atsushi@mxc.nes.nec.co.jp,
	ebiederm@xmission.com, cpw@sgi.com
Subject: Re: [PATCH 05/13] vmcore: modify ELF32 code according to new type
Date: Fri, 15 Feb 2013 10:30:48 -0500	[thread overview]
Message-ID: <20130215153048.GD27784@redhat.com> (raw)
In-Reply-To: <20130214101210.22466.36330.stgit@localhost6.localdomain6>

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@jp.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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  reply	other threads:[~2013-02-15 15:30 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-02-14 10:11 [PATCH 00/13] kdump, vmcore: support mmap() on /proc/vmcore HATAYAMA Daisuke
2013-02-14 10:11 ` [PATCH 01/13] vmcore: allocate buffer for ELF headers on page-size alignment HATAYAMA Daisuke
2013-02-15 15:01   ` Vivek Goyal
2013-02-14 10:11 ` [PATCH 02/13] vmcore: round up buffer size of ELF headers by PAGE_SIZE HATAYAMA Daisuke
2013-02-15 15:18   ` Vivek Goyal
2013-02-18 15:58     ` HATAYAMA Daisuke
2013-02-14 10:11 ` [PATCH 03/13] vmcore: fill unused part of buffer for ELF headers with 0 HATAYAMA Daisuke
2013-02-14 10:12 ` [PATCH 04/13] vmcore: introduce types for objects copied in 2nd kernel HATAYAMA Daisuke
2013-02-15 15:28   ` Vivek Goyal
2013-02-18 16:06     ` HATAYAMA Daisuke
2013-02-19 23:07       ` Vivek Goyal
2013-02-14 10:12 ` [PATCH 05/13] vmcore: modify ELF32 code according to new type HATAYAMA Daisuke
2013-02-15 15:30   ` Vivek Goyal [this message]
2013-02-18 16:11     ` HATAYAMA Daisuke
2013-02-14 10:12 ` [PATCH 06/13] vmcore: modify vmcore clean-up function to free buffer on 2nd kernel HATAYAMA Daisuke
2013-02-15 15:32   ` Vivek Goyal
2013-02-14 10:12 ` [PATCH 07/13] vmcore: modify read_vmcore() to read " HATAYAMA Daisuke
2013-02-15 15:51   ` Vivek Goyal
2013-02-14 10:12 ` [PATCH 08/13] vmcore: remove unused helper function HATAYAMA Daisuke
2013-02-15 15:52   ` Vivek Goyal
2013-02-14 10:12 ` [PATCH 09/13] vmcore: copy ELF note segments in buffer on 2nd kernel HATAYAMA Daisuke
2013-02-15 16:53   ` Vivek Goyal
2013-02-18 17:02     ` HATAYAMA Daisuke
2013-02-19 23:05       ` Vivek Goyal
2013-02-14 10:12 ` [PATCH 10/13] vmcore: round-up offset of vmcore object in page-size boundary HATAYAMA Daisuke
2013-02-14 10:12 ` [PATCH 11/13] vmcore: count holes generated by round-up operation for vmcore size HATAYAMA Daisuke
2013-02-14 10:12 ` [PATCH 12/13] vmcore: copy non page-size aligned head and tail pages in 2nd kernel HATAYAMA Daisuke
2013-02-14 10:12 ` [PATCH 13/13] vmcore: introduce mmap_vmcore() HATAYAMA Daisuke
2013-02-15  3:57 ` [PATCH 00/13] kdump, vmcore: support mmap() on /proc/vmcore Atsushi Kumagai
2013-02-18  0:16   ` Hatayama, Daisuke
2013-03-27  5:51 ` makedumpfile mmap() benchmark Jingbai Ma
2013-03-27  6:23   ` HATAYAMA Daisuke
2013-03-27  6:35     ` Jingbai Ma

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