On 11/10/2016 7:48 PM, David Miller wrote:
From: Thomas Tai <thomas.tai@xxxxxxxxxx>
Date: Thu, 3 Nov 2016 09:19:01 -0700
When booting up LDOM, find_node() warns that a physical address
doesn't match a NUMA node.
WARNING: CPU: 0 PID: 0 at arch/sparc/mm/init_64.c:835
find_node+0xf4/0x120 find_node: A physical address doesn't
match a NUMA node rule. Some physical memory will be
owned by node 0.Modules linked in:
...
It is because linux use an internal structure node_masks[] to
keep the best memory latency node only. However, LDOM mdesc can
contain single latency-group with multiple memory latency nodes.
If the address doesn't match the best latency node within
node_masks[], it should check for an alternative via mdesc.
The warning message should only be printed if the address
doesn't match any node_masks[] nor within mdesc. To minimize
the impact of searching mdesc every time, the last matched
mask and index is stored in a variable.
Signed-off-by: Thomas Tai <thomas.tai@xxxxxxxxxx>
Reviewed-by: Chris Hyser <chris.hyser@xxxxxxxxxx>
Reviewed-by: Liam Merwick <liam.merwick@xxxxxxxxxx>
Applied.
Thank you David for your time to review and apply the patch.
Thomas
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