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Revision 56c4bfb3

ID56c4bfb3f07f3107894c00281276aea4f5e8834d

Added by Laszlo Ersek almost 11 years ago

dump: rebase from host-private RAMBlock offsets to guest-physical addresses

RAMBlock.offset --> GuestPhysBlock.target_start
RAMBlock.offset + RAMBlock.length --> GuestPhysBlock.target_end
RAMBlock.length --> GuestPhysBlock.target_end -
GuestPhysBlock.target_start

"GuestPhysBlock.host_addr" is only used when writing the dump contents.

This patch enables "crash" to work with the vmcore by rebasing the vmcore
from the left side of the following diagram to the right side:

host-private
offset
relative
to ram_addr RAMBlock guest-visible paddrs
0 -----------------.....+-------------------+ 0 | ^ | | ^ | | 640 KB | | 640 KB | | v | | v |
0x0000a0000 -----------------.....+-------------------+ 0x0000a0000 | ^ | |XXXXXXXXXXXXXXXXXXX| | 384 KB | |XXXXXXXXXXXXXXXXXXX| | v | |XXXXXXXXXXXXXXXXXXX|
0x000100000 -----------------.....+-------------------+ 0x000100000 | ^ | | ^ | | 3583 MB | | 3583 MB | | v | | v |
0x0e0000000 -----------------.....+-------------------+ 0x0e0000000 | ^ |. |XXXXXXXXXXXXXXXXXXX| | above_4g_mem_size | . |XXXX PCI hole XXXXX| | v | . |XXXX XXXXX|
ram_size ----------------- . |XXXX 512 MB XXXXX|
. .|XXXXXXXXXXXXXXXXXXX|
. ----------------- 0x100000000
. | ^ |
. | above_4g_mem_size |
.| v |
----------------- ram_size
+ 512 MB

Related RHBZ: https://bugzilla.redhat.com/show_bug.cgi?id=981582

Signed-off-by: Laszlo Ersek <>
Signed-off-by: Luiz Capitulino <>

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