aer_isr(9)

💖 NAME 💖

Okay so bestie, this is aer_isr(9) from the Kernel API Manual — the little function that consumes errors detected by the Root Port. Periodt. ✨

🌸 SYNOPSIS 🌸

irqreturn_t aer_isr (int irq , void *context );

🎀 ARGUMENTS 🎀

• irq — the IRQ assigned to the Root Port, no cap.
• context — a pointer to the Root Port data structure. Iconic pointer behavior.

🦋 DESCRIPTION 🦋

Bestie, this one gets invoked, as DPC, when the Root Port records new detected error. That’s the whole vibe. 💅

👑 SEE ALSO 👑

First up, the Kernel file is literally ./drivers/pci/pcie/aer.c — go peek, iykyk. Then you’ve got the whole bestie squad:

• enable_ecrc_checking(9)
• disable_ecrc_checking(9)
• pcie_set_ecrc_checking(9)
• pcie_ecrc_get_policy(9)
• pci_aer_raw_clear_status(9)
• add_error_device(9)
• is_error_source(9)
• find_source_device(9)
• pci_aer_unmask_internal_errors(9)
• pci_aer_handle_error(9)
• aer_get_device_error_info(9)
• aer_isr_one_error_type(9)
• aer_isr_one_error(9)
• aer_irq(9)
• aer_enable_rootport(9)
• aer_disable_rootport(9)
• aer_remove(9)
• aer_probe(9)
• aer_root_reset(9)
• pcie_aer_init(9)

Mwah 💋 — this cutie came from source/version ./drivers/pci/pcie, dated October 2026. Slay. 🌈🫶