]> git.baikalelectronics.ru Git - kernel.git/commit
powerpc/pseries/mobility: prevent cpu hotplug during DT update
authorNathan Lynch <nathanl@linux.ibm.com>
Wed, 12 Jun 2019 04:45:05 +0000 (23:45 -0500)
committerMichael Ellerman <mpe@ellerman.id.au>
Sat, 15 Jun 2019 06:52:07 +0000 (16:52 +1000)
commit2bf7bfa002fdccdeaf8a5720be64e7d5bb7ae958
treec8823e071f0321cf58c616f2235b8926111a219b
parent5d384ec37cd37c185c5a7d71921a5b4081629468
powerpc/pseries/mobility: prevent cpu hotplug during DT update

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: 9b6e2c7b9681 ("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>
arch/powerpc/platforms/pseries/mobility.c