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authorThomas Gleixner <[email protected]>2020-03-06 14:03:43 +0100
committerThomas Gleixner <[email protected]>2020-03-08 11:06:40 +0100
commitc16816acd08697b02a53f56f8936497a9f6f6e7a (patch)
treeb1862c5ad099bf0324e042dd2984f6730795472a /tools/perf/scripts/python/exported-sql-viewer.py
parenta740a423c36932695b01a3e920f697bc55b05fec (diff)
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: [email protected] Signed-off-by: Thomas Gleixner <[email protected]> Acked-by: Marc Zyngier <[email protected]> Link: https://lkml.kernel.org/r/[email protected]
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