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authorPeter Maydell <peter.maydell@linaro.org>2014-08-19 13:00:57 +0100
committerPeter Maydell <peter.maydell@linaro.org>2014-08-19 13:00:57 +0100
commit0e4a77370594c91dd126f9872893ed473374cc72 (patch)
tree821715343d4c22b6e71d98676b51e63d59466c55 /docs
parent8e6e2c2ae7a81f625cf1cb320891d5270e277548 (diff)
parentf54bb15f9d373877954e44db3a8bb368aff45b42 (diff)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging
SCSI changes that enable sending vendor-specific commands via virtio-scsi. Memory changes for QOMification and automatic tracking of MR lifetime. # gpg: Signature made Mon 18 Aug 2014 13:03:09 BST using RSA key ID 9B4D86F2 # gpg: Good signature from "Paolo Bonzini <pbonzini@redhat.com>" # gpg: aka "Paolo Bonzini <bonzini@gnu.org>" * remotes/bonzini/tags/for-upstream: mtree: remove write-only field memory: Use canonical path component as the name memory: Use memory_region_name for name access memory: constify memory_region_name exec: Abstract away ref to memory region names loader: Abstract away ref to memory region names tpm_tis: remove instance_finalize callback memory: remove memory_region_destroy memory: convert memory_region_destroy to object_unparent ioport: split deletion and destruction nic: do not destroy memory regions in cleanup functions vga: do not dynamically allocate chain4_alias sysbus: remove unused function sysbus_del_io qom: object: move unparenting to the child property's release callback qom: object: delete properties before calling instance_finalize virtio-scsi: implement parse_cdb scsi-block, scsi-generic: implement parse_cdb scsi-block: extract scsi_block_is_passthrough scsi-bus: introduce parse_cdb in SCSIDeviceClass and SCSIBusInfo scsi-bus: prepare scsi_req_new for introduction of parse_cdb Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'docs')
-rw-r--r--docs/memory.txt15
1 files changed, 10 insertions, 5 deletions
diff --git a/docs/memory.txt b/docs/memory.txt
index 5bdbdb3..b12f1f0 100644
--- a/docs/memory.txt
+++ b/docs/memory.txt
@@ -74,11 +74,16 @@ Region lifecycle
----------------
A region is created by one of the constructor functions (memory_region_init*())
-and destroyed by the destructor (memory_region_destroy()). In between,
-a region can be added to an address space by using memory_region_add_subregion()
-and removed using memory_region_del_subregion(). Region attributes may be
-changed at any point; they take effect once the region becomes exposed to the
-guest.
+and attached to an object. It is then destroyed by object_unparent() or simply
+when the parent object dies.
+
+In between, a region can be added to an address space
+by using memory_region_add_subregion() and removed using
+memory_region_del_subregion(). Destroying the region implicitly
+removes the region from the address space.
+
+Region attributes may be changed at any point; they take effect once
+the region becomes exposed to the guest.
Overlapping regions and priority
--------------------------------