acpi_gtdt_map_ppi(9)

🌸 acpi_gtdt_map_ppi(9) 🌸

okay so welcome to the Kernel API Manual page for acpi_gtdt_map_ppi, bestie 💅 this is the one that maps the PPIs of the per-cpu arch_timer. slay. it’s giving very specific kernel-timer mapping energy, and we’re keeping every single detail, no cap.

✨ NAME ✨

acpi_gtdt_map_ppi — Map the PPIs of per-cpu arch_timer. 🎀

💖 SYNOPSIS 💖

the signature is exactly this, fr fr:

int acpi_gtdt_map_ppi (int type );

🫶 ARGUMENTS 🫶

• type — the type of PPI. 🦋

🎀 NOTE 🎀

bestie, important caveat: Secure state is not managed by the kernel on ARM64 systems. So we only handle the non-secure timer PPIs, ARCH_TIMER_PHYS_SECURE_PPI is treated as invalid type. 😭 no secure-state handling from the kernel on ARM64, periodt.

🔥 RETURN 🔥

it returns the mapped PPI value, and 0 if error. that’s the whole return vibe. ✨

🌈 SEE ALSO 🌈

• Kernel file ./drivers/acpi/arm64/gtdt.c
• struct acpi_gtdt_descriptor(9)
• acpi_gtdt_c3stop(9)
• acpi_gtdt_init(9)

okay bye bestie 🫶 this one’s source/version is ./drivers/acpi/arm64, dated October 2026, and it’s the acpi_gtdt_map_ppi(9) page. periodt. 💜