[PATCH V2 0/3] ioapic hot-removal bugs
From: Rui Wang
Date: Wed Jun 08 2016 - 03:17:11 EST
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