kernel_optimize_test/kernel/irq
Thomas Gleixner c16816acd0 genirq: Add protection against unsafe usage of generic_handle_irq()
In general calling generic_handle_irq() with interrupts disabled from non
interrupt context is harmless. For some interrupt controllers like the x86
trainwrecks this is outright dangerous as it might corrupt state if an
interrupt affinity change is pending.

Add infrastructure which allows to mark interrupts as unsafe and catch such
usage in generic_handle_irq().

Reported-by: sathyanarayanan.kuppuswamy@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Marc Zyngier <maz@kernel.org>
Link: https://lkml.kernel.org/r/20200306130623.590923677@linutronix.de
2020-03-08 11:06:40 +01:00
..
affinity.c genirq/affinity: Remove const qualifier from node_to_cpumask argument 2019-08-28 12:20:43 +02:00
autoprobe.c genirq: Delay deactivation in free_irq() 2019-07-03 10:12:28 +02:00
chip.c genirq: Introduce irq_chip_get/set_parent_state calls 2019-11-16 10:20:02 +00:00
cpuhotplug.c genirq, sched/isolation: Isolate from handling managed interrupts 2020-01-22 16:29:49 +01:00
debug.h
debugfs.c genirq/debugfs: Add missing sanity checks to interrupt injection 2020-03-08 11:06:40 +01:00
devres.c
dummychip.c
generic-chip.c
handle.c
internals.h genirq: Add protection against unsafe usage of generic_handle_irq() 2020-03-08 11:06:40 +01:00
ipi.c
irq_sim.c
irqdesc.c genirq: Add protection against unsafe usage of generic_handle_irq() 2020-03-08 11:06:40 +01:00
irqdomain.c irqdomain: Fix function documentation of __irq_domain_alloc_fwnode() 2020-03-08 11:02:24 +01:00
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile genirq/timings: Add selftest for circular array 2019-06-12 10:47:04 +02:00
manage.c genirq/proc: Reject invalid affinity masks (again) 2020-02-14 09:43:17 +01:00
matrix.c
migration.c
msi.c x86/apic/msi: Plug non-maskable MSI affinity race 2020-02-01 09:31:47 +01:00
pm.c PCI: irq: Introduce rearm_wake_irq() 2019-07-23 09:37:51 +02:00
proc.c genirq/proc: Reject invalid affinity masks (again) 2020-02-14 09:43:17 +01:00
resend.c genirq: Add protection against unsafe usage of generic_handle_irq() 2020-03-08 11:06:40 +01:00
settings.h
spurious.c genirq: Add missing __must_hold() sparse annotation 2020-01-09 18:03:37 +01:00
timings.c genirq/timings: Add selftest for next event computation 2019-06-12 10:47:05 +02:00