From: Rui Wang <rui.y.wang@intel.com>
To: tglx@linutronix.de, rjw@rjwysocki.net, tony.luck@intel.com,
bhelgaas@google.com
Cc: linux-acpi@vger.kernel.org, linux-pci@vger.kernel.org,
linux-kernel@vger.kernel.org, rui.y.wang@intel.com
Subject: [PATCH V2 0/3] ioapic hot-removal bugs
Date: Wed, 8 Jun 2016 14:59:50 +0800 [thread overview]
Message-ID: <1465369193-4816-1-git-send-email-rui.y.wang@intel.com> (raw)
Hi Thomas,
Here's the v2 patchset according to your suggestion.
While testing ioapic hotplug, two bugs were found.
1) acpi_ioapic_add() is only called during hotadd of ioapics. Those
already present during system boot are not added, and thus cannot be
hot-removed.
2) ioapics[i].iomem_res were assigned the wrong pointers, causing panic
while hot-removing ioapics.
On a 4-socket brickland, hot-removal of the 3 sockets can be done
only after applying the first two patches. The 3rd patch is optional.
Regards,
Rui
v2: split the second patch into a one liner and a cleanup patch according
to Thomas.
Rui Wang (3):
x86/ioapic: Support hot-removal of IOAPICs present during boot
x86/ioapic: Fix wrong pointers in ioapic_setup_resources()
x86/ioapic: Simplify ioapic_setup_resources()
arch/x86/kernel/apic/io_apic.c | 18 +++++++-----------
drivers/acpi/internal.h | 2 --
drivers/acpi/ioapic.c | 7 ++++---
drivers/acpi/pci_root.c | 2 +-
drivers/pci/setup-bus.c | 5 ++++-
include/linux/acpi.h | 3 +++
6 files changed, 19 insertions(+), 18 deletions(-)
--
1.8.3.1
next reply other threads:[~2016-06-08 7:16 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-08 6:59 Rui Wang [this message]
2016-06-08 6:59 ` [PATCH V2 1/3] x86/ioapic: Support hot-removal of IOAPICs present during boot Rui Wang
2016-06-08 8:05 ` kbuild test robot
2016-06-08 9:32 ` [PATCH V3 " Rui Wang
2016-06-10 12:57 ` Thomas Gleixner
2016-06-10 13:56 ` Rafael J. Wysocki
2016-06-10 16:43 ` Bjorn Helgaas
2016-06-12 6:06 ` Rui Wang
2016-06-16 17:09 ` Bjorn Helgaas
2016-06-22 7:13 ` Rui Wang
2016-06-22 14:53 ` Bjorn Helgaas
2016-06-24 15:18 ` Rui Wang
2016-06-22 7:40 ` [PATCH V4 " Rui Wang
2016-06-22 15:14 ` Bjorn Helgaas
2016-06-23 5:11 `
2016-06-23 17:34 ` Bjorn Helgaas
2016-06-24 15:30 ` Rui Wang
2016-06-26 3:44 ` [PATCH V5 " Rui Wang
2016-08-08 20:22 ` Bjorn Helgaas
2016-08-09 3:23 ` Rui Wang
2016-08-09 12:09 ` Rafael J. Wysocki
2016-06-08 6:59 ` [PATCH V2 2/3] x86/ioapic: Fix wrong pointers in ioapic_setup_resources() Rui Wang
2016-06-10 9:45 ` [tip:x86/urgent] " tip-bot for Rui Wang
2016-06-10 12:01 ` [tip:x86/apic] x86/ioapic: Fix incorrect " tip-bot for Rui Wang
2016-06-10 12:48 ` [tip:x86/urgent] " tip-bot for Rui Wang
2016-06-08 6:59 ` [PATCH V2 3/3] x86/ioapic: Simplify ioapic_setup_resources() Rui Wang
2016-06-10 9:48 ` [tip:x86/apic] " tip-bot for Rui Wang
2016-06-10 12:54 ` tip-bot for Rui Wang
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