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Re: [PATCH][RFC] dump-core: PFN-GMFN table and ELF formatify (was Re: [X

To: John Levon <levon@xxxxxxxxxxxxxxxxx>
Subject: Re: [PATCH][RFC] dump-core: PFN-GMFN table and ELF formatify (was Re: [Xen-devel] xc_get_pfn_list() creates broken core files)
From: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>
Date: 2007年1月18日 10:41:10 +0900
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Keir Fraser <keir@xxxxxxxxxxxxx>, crash-utility@xxxxxxxxxx
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On Wed, Jan 17, 2007 at 01:06:33PM +0000, John Levon wrote:
> > I followed the way creating process core file and linux kernel dump file.
> > Process core file and linux kernel dump file use only program headers.
> But in both of those cases we have access to meaningful virtual address
> maps, which isn't true here (or certainly not trivially true!)
In xen dump-core file, (pseudo) physical address(phdr.p_paddr) is true.
This seems reasonable.
> And e.g. objcopy is designed for
> manipulating sections (copying out contents of a section etc). 
Sections and tools like objcopy are for linking.
Program headers are for describing memory layout in virtual/physical
address.
I don't think that we want linking manipulations for core dump file.
-- 
yamahata
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