[PATCH 0/3] powerpc/xive: PCI hotplug fixes under PowerVM

[Cédric Le Goater]

Hello,

Here are a couple of fixes for PCI hotplug issues for machines running
under the POWER hypervisor using hash MMU and the XIVE interrupt mode.

Commit 1ca3dec2b2df ("powerpc/xive: Prevent page fault issues in the
machine crash handler") forced the mapping of the XIVE ESB page and
this is now blocking the removal of a passthrough IO adapter because
the PCI isolation fails with "valid outstanding translations". Under
KVM, the ESB pages for the adapter interrupts are un-mapped from the
guest by the hypervisor in the KVM XIVE native device. This is is now
redundant but it's harmless.

Last is a fix to disable the XIVE debugfs file when XIVE is disabled.

Thanks,

C.

Cédric Le Goater (3):
  powerpc/xive: Clear the page tables for the ESB IO mapping
  powerpc/pci: unmap legacy INTx interrupts of passthrough IO adapters
  powerpc/xive: Do not expose a debugfs file when XIVE is disabled

 arch/powerpc/kernel/pci-hotplug.c |  2 ++
 arch/powerpc/sysdev/xive/common.c | 10 ++++++++--
 2 files changed, 10 insertions(+), 2 deletions(-)

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2.25.4