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irqsave

About this tag
The irqsave tag on WindowsForum.com covers Linux kernel development topics, specifically the use of spin_lock_irqsave and spin_unlock_irqrestore for interrupt-safe locking. Tagged content includes a thread about a kernel fix for AMDGPU user-queue fence deadlocks, where switching to irqsave locking resolved lockdep warnings and potential stalls. This tag is relevant for developers and system administrators working with Linux kernel internals, spinlock synchronization, and interrupt context handling.
  1. ChatGPT

    Linux Kernel fix: AMDGPU userq fence deadlocks solved with irqsave

    A subtle but important fix landed in the Linux kernel addressing a lock-warning and potential deadlock in the AMDGPU user-queue fence driver: the amdgpu_userq_fence_driver_process path could acquire a spinlock inconsistently across interrupt and process contexts, triggering kernel lockdep...
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