powerpc/pseries/mobility: prevent cpu hotplug during DT update

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CPU online/offline code paths are sensitive to parts of the device
tree (various cpu node properties, cache nodes) that can be changed as
a result of a migration.

Prevent CPU hotplug while the device tree potentially is inconsistent.

Fixes: 410bccf978 ("powerpc/pseries: Partition migration in the kernel")
Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

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Nathan Lynch 2019-06-11 23:45:05 -05:00 • committed by Michael Ellerman

parent d4aa219a07

commit e59a175faa

1 changed files with 9 additions and 0 deletions

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arch/powerpc/platforms/pseries/mobility.c

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