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From: "Cédric Le Goater" <clg@kaod.org>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org, "Cédric Le Goater" <clg@kaod.org>
Subject: [PATCH 0/3] powerpc/xive: PCI hotplug fixes under PowerVM
Date: Wed, 29 Apr 2020 09:51:19 +0200	[thread overview]
Message-ID: <20200429075122.1216388-1-clg@kaod.org> (raw)

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(-)

-- 
2.25.4


             reply	other threads:[~2020-04-29 10:20 UTC|newest]

Thread overview: 11+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-04-29  7:51 Cédric Le Goater [this message]
2020-04-29  7:51 ` [PATCH 1/3] powerpc/xive: Clear the page tables for the ESB IO mapping Cédric Le Goater
2020-04-29  7:51 ` [PATCH 2/3] powerpc/pci: unmap legacy INTx interrupts of passthrough IO adapters Cédric Le Goater
2020-05-21  7:13   ` Cédric Le Goater
2020-05-27  0:57   ` Oliver O'Halloran
2020-05-27  7:31     ` Cédric Le Goater
2020-06-10 18:10     ` Cédric Le Goater
2020-05-27 11:05   ` Cédric Le Goater
2020-05-28 13:25     ` Michael Ellerman
2020-04-29  7:51 ` [PATCH 3/3] powerpc/xive: Do not expose a debugfs file when XIVE is disabled Cédric Le Goater
2020-06-09  5:28 ` [PATCH 0/3] powerpc/xive: PCI hotplug fixes under PowerVM Michael Ellerman

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