[Crash-utility] Problem with kvbase for ARM

[Dave Anderson]

----- Original Message -----
> Earlier _stext has been in the 0xc0008xxx range, but now I see:
> 
> c0004000 (A) swapper_pg_dir
> c0008000 (t) .head.text
> c0008000 (T) _text
> c0008000 (T) stext
> c000804c (t) __create_page_tables
> c0008100 (t) __turn_mmu_on_loc
> c000810c (t) __vet_atags
> c0100000 (t) .text
> c0100000 (T) __exception_text_start
> c0100000 (T) _stext
> c0100000 (T) asm_do_IRQ
> c0100004 (T) do_undefinstr
> c010022c (T) do_IPI
> c0100230 (T) do_DataAbort
> c01003d8 (T) do_PrefetchAbort
> c0100470 (T) gic_handle_irq
> 
> Jan

OK thanks -- I'll mimic the x86 code for crash-7.0.2.

Dave

> 
> Jan Karlsson
> Senior Software Engineer
> MIB
>  
> Sony Mobile Communications
> Tel: +46703062174
> sonymobile.com
>  
> 
> 
> -----Original Message-----
> From: crash-utility-bounces at redhat.com
> [mailto:crash-utility-bounces at redhat.com] On Behalf Of Dave Anderson
> Sent: tisdag den 27 augusti 2013 15:26
> To: Discussion list for crash utility usage, maintenance and development
> Cc: Fransson, Per 2
> Subject: Re: [Crash-utility] Problem with kvbase for ARM
> 
> 
> 
> ----- Original Message -----
> > 
> > 
> > Hi Dave
> > 
> > 
> > 
> > I have problems with the line (in arm.c)
> > 
> > machdep->kvbase = symbol_value("_stext") & 0xffff0000UL;
> > 
> > In the latest kernels this does not give the correct value. If I
> > change it to the x86 implementation:
> > 
> > machdep->kvbase = symbol_value("_stext") & ~KVBASE_MASK;
> > 
> > where KVBASE_MASK is defined in defs.h
> > 
> > #define KVBASE_MASK (0x1ffffff)
> > 
> > Then things work as they should, both on the newer and the older kernels.
> > Without this patch crash complains that vmcore and vmlinux does not
> > match and stops.
> 
> OK, that can be changed.  Where are the new symbols located?
> All the older ARM kernels I have start like this:
> 
>  crash> sym -l
>  c0004000 (A) swapper_pg_dir
>  c0008000 (t) .init
>  c0008000 (T) __init_begin
>  c0008000 (T) _sinittext
>  c0008000 (T) _stext
>  c0008000 (T) stext
>  c000804c (t) __create_page_tables
>  c0008104 (t) __enable_mmu_loc
>  c0008110 (t) __enable_mmu
>  c0008140 (t) __turn_mmu_on
>  c0008158 (t) __enable_mmu_end
>  c0008158 (t) __vet_atags
>  ...
> 
> Dave
>  
> 
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