Hello.
I updated patches for memory hot-add.
Current code allow addition to just node 0.
By this patch, the new memory is able to be added to appropriate node,
- if the node is already online.- If the node is offline,
(It means new node is comming!) then the memory will belongs
to node 0 yet.
If new memory belongs to new node, new pgdat must be initialized.
But, it still need more many steps. So, I would like to propose
this small steps for a while.
This patch is use acpi's DSDT to find node id from physicall address.
So, this patch is just for intel/AMD architecture.
I tested this patch on ia64 and x86-64 box with custermized SRAT & DSDT
node emulation.
This patch is for 2.6.16-rc2-mm1.
Please comment.
Change log from ver.1 is
- The parameter of size of add_memory() was changed from (_MAX - _MIN + 1)
to _LEN by Bjorn Helgaas-san.
To compare physical memory and DSDT at
acpi_memory_match_paddr_to_memdevice(), using MAX-MIN +1 was changed
to using length.
- change from using acpi_map_pxm_to_node() to pxm_to_node().
acpi_map_pxm_to_node() is useful to decide new node's id
when new node can be added, but it is not appropriate for
current code.
- Remove extra \n from ACPI_TRACE_FUNCTION().
- Update for 2.6.16-rc2-mm1.
- Tested on x86_64 box with SRAT & DSDT emulation.
Please comment.
--
Yasunori Goto
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