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Revision 093bc2cd

ID093bc2cd885e4e3420509a80a1b9e81848e4b8fe

Added by Avi Kivity over 12 years ago

Hierarchical memory region API

The memory API separates the attributes of a memory region (its size, how
reads or writes are handled, dirty logging, and coalescing) from where it
is mapped and whether it is enabled. This allows a device to configure
a memory region once, then hand it off to its parent bus to map it according
to the bus configuration.

Hierarchical registration also allows a device to compose a region out of
a number of sub-regions with different properties; for example some may be
RAM while others may be MMIO.

Reviewed-by: Anthony Liguori <>
Signed-off-by: Avi Kivity <>
Signed-off-by: Anthony Liguori <>

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