Merge tag 'irq-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull core irq updates from Thomas Gleixner:

 - Invoke add_interrupt_randomness() in handle_percpu_devid_irq() and
   cleanup the workaround in the Hyper-V driver, which would now invoke
   it twice on ARM64. Removing it from the driver requires to add it to
   the x86 system vector entry point

 - Remove the pointles cpu_read_lock() around reading CPU possible mask,
   which is read only after init

 - Add documentation for the interaction between device tree bindings
   and the interrupt type defines in irq.h

 - Delete stale defines in the matrix allocator and the equivalent in
   loongarch

* tag 'irq-core-2026-04-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Drivers: hv: Move add_interrupt_randomness() to hypervisor callback sysvec
  genirq/chip: Invoke add_interrupt_randomness() in handle_percpu_devid_irq()
  genirq/affinity: Remove cpus_read_lock() while reading cpu_possible_mask
  genirq/matrix, LoongArch: Delete IRQ_MATRIX_BITS leftovers
  genirq: Document interaction between <linux/irq.h> and DT binding defines

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/irq.h b/include/linux/irq.h
index 951acbdb9f84..efa514ee562f 100644
--- a/include/linux/irq.h
+++ b/include/linux/irq.h
@@ -35,6 +35,10 @@ enum irqchip_irq_state;
  *
  * Bits 0-7 are the same as the IRQF_* bits in linux/interrupt.h
  *
+ * Note that the first 6 definitions are shadowed by C preprocessor definitions
+ * in include/dt-bindings/interrupt-controller/irq.h.  This is not an issue, as
+ * the actual values must be the same, due to being part of the stable DT ABI.
+ *
  * IRQ_TYPE_NONE		- default, unspecified type
  * IRQ_TYPE_EDGE_RISING		- rising edge triggered
  * IRQ_TYPE_EDGE_FALLING	- falling edge triggered