Re: [lkcd-devel] [PATCH] LKCD patch for IPF(IA64) Update

It looks like a bug in IA64 LCRASH - page table translation 
(kl_page_ia64.c) You noticed this problem only with modules since the 
module structures are allocated vmalloc space. Thus, LCRASH needs page 
table access for memory translation. First, we should see whether macros 
that are used for page table translation are correct both in LCRASH as 
well as in the kernel. It is the common problem in LCRASH since we are 
hard coding them in lkcdutils. 

Note that I never worked on IA64 LKCD, but giving my comments based on my 
experience in other archs. You should verify kl_page_ia64.c, kl_mem_ia64.c 
and linux/include/asm-ia64/pgtable.h (kernel source) for page table 
translation.

Thanks
Haren 

 
Sent by:        [email protected]
To:     AKIYAMA Nobuyuki <[email protected]>
cc:     [email protected], [email protected] 
Subject:        Re: [lkcd-devel] [PATCH] LKCD patch for IPF(IA64) Update



Hi,
I used your patches to build a 2.6 kernel for an itanium 2
machine and lkcdutils too (including dwarf2).
Everything work fine if I run lcrash on /dev/mem or a dump
without module loaded.
But if I load a module (with insmod for example) I get running
lcrash the following messages :

map = /boot/System.map
dump = /dev/mem
kerntypes = /boot/Kerntypes


Please wait...
Check dump architecture:
Warning: Unknown magic number in dump header.
Warning: Unknown dump arch. Setting dump arch to host arch.
Init host arch specific data ... Done.
Init dump arch specific data ... Done.
Loading system map ... Done.
Set dump specific data ... Done.
Loading type info (Kerntypes) ... Done.
Version of map,dump and types:
tigre1_frec_bull_fr_Thu_Mar_11_12_34_30_CET_2004
Loading ksyms from dump ... Failed.

invalid address mapping

any idea ???
thanks
regards

Guy Sauvebois


AKIYAMA Nobuyuki wrote:
> Hi,
>
> I update the LKCD patch for IPF(IA64). From this patch,
> the Dwarf2 format has been supported.
>  - 2.6.2 kernel support
>  - "dis" command support
>  -  fix the bug of alt-sysrq-d.
> Please try these patches.
>
> Attached Files:
>  The following files are included.
> - lkcd_ipf.patch
>     This patch includes changes of LKCD for IPF support.
> - lkcdutils_dwarf2.patch
>     patch of lkcdutils, including Dwarf2 format support.
>
> How To Use:
> I) Make kernel
>    1. Download linux-2.6.2 source tree
>    2. Download the latest patch of LKCD from cvs
>    3. Apply the existing lkcd patch for linux-2.6.2
>    4. Apply lkcd_ipf.patch
>    5. Make and install kernel.
>    6. cp linux-2.6.2/init/kerntypes.o /boot/Kerntypes
>    7. cp linux-2.6.2/System.map /boot/System.map
>
> II) Make lkcdutils
>    1. Download the latest lkcdutils source
>    2. Apply lkcdutils_dwarf2.patch
>    3. configure --pgsize=<value of page size>
>         default value is 4096 if not specified.
>       Note:
>         --pgsize indecates the size of the swap header.
>         Its value is same as the PAGESIZE used by kernel
>    4. make and make install
>
> Best Regards,
> Nobuyuki Akiyama


--
Guy Sauvebois           tel:229 7978 ou 04 76 29 70 81
email:                  [email protected]



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