Linux kernel bug fix: powerpc/pseries/iommu: Check if the default window in use before removing it
Subsystem: arch/powerpc (arch/powerpc/platforms/pseries/iommu.c)
Bug type: crash, severity: high
Files changed: arch/powerpc/platforms/pseries/iommu.c
Introduced by Leonardo Bras on 2021-08-27 00:56:55 +1000; fixed by Alexey Kardashevskiy on 2021-10-25 11:41:14 +1100 (lifetime: 59 days)