linux-kernel - [PATCH 0/2] Improvement on ioapic hotplug

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Message-Id: <1488204944-27189-1-git-send-email-rui.y.wang@intel.com>
Date:   Mon, 27 Feb 2017 22:15:42 +0800
From:   Rui Wang <rui.y.wang@...el.com>
To:     helgaas@...nel.org, tglx@...utronix.de, rjw@...ysocki.net
Cc:     tony.luck@...el.com, bhelgaas@...gle.com,
        linux-acpi@...r.kernel.org, linux-pci@...r.kernel.org,
        linux-kernel@...r.kernel.org, rui.y.wang@...el.com, x86@...nel.org
Subject: [PATCH 0/2] Improvement on ioapic hotplug

The revert of 991de2e59090 ("PCI, x86: Implement pcibios_alloc_irq()
and pcibios_free_irq()") causes a problem for IOAPIC hotplug. If
a device under the IOAPIC doesn't call pci_disable_device(), then
the hot-removal of the IOAPIC causes kernel stack dump.

This patchset can fix the problem. IOAPIC hot-removal works correctly
after applying this patchset.

Rui Wang (2):
  x86/PCI: Implement pci_release_device to release IRQ from IOAPIC
  x86/ioapic: Split IOAPIC hot-removal into two steps

 arch/x86/pci/common.c   |  9 +++++++++
 drivers/acpi/internal.h |  1 +
 drivers/acpi/ioapic.c   | 22 ++++++++++++++++------
 drivers/acpi/pci_root.c |  4 ++--
 4 files changed, 28 insertions(+), 8 deletions(-)

-- 
1.8.3.1