From fca59bea770346cf1c1f9b0e00cb48a61b44a8f3 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Sun, 25 Oct 2015 21:00:20 +0100
Subject: import of old now defunct presentation slides svn repo

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+%         Registration           Kdump, A Kexec based kernel crash dumping    
+%                                                mechanism                    
+%                              Vivek Goyal (vgoyal@in.ibm.com)                
+
+Kdump is a kexec-based kernel crash dumping      
+mechanism, which is being perceived as a       
+reliable crash dumping solution for Linux. In  
+this paper we discuss what kexec is and what   
+it can do in general case. Kexec has been      
+modified to boot a new kernel even in a system 
+crash event. This paper includes the details   
+about the changes made in kexec to handle the  
+panic situations. Given the fact that kexec    
+enables booting into a new kernel while        
+preserving the memory contents in a crash      
+scenario, kdump uses this feature to capture   
+the kernel crash dump. Physical memory layout  
+and processor state are encoded in ELF Core    
+format and these headers are stored in a       
+reserved section of memory. Upon a crash, new  
+kernel boots up from reserved memory and       
+provides a platform to retrieve stored elf     
+headers and capture the crash dump. We briefly 
+discuss elf core header creation and dump      
+capture mechanism and also detail how to       
+configure and use kdump feature.               
+
+
+
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