Ivthandleinterrupt

// Populate IVT void init_ivt(void) { // Initialize all IVT entries to a default handler for (int i = 0; i < 16; ++i) { ivt[i] = default_handler; }

To understand ivthandleinterrupt , you must first understand the Interrupt Vector Table. ivthandleinterrupt

For a custom ARM Cortex-M project using GCC, a minimal ivthandleinterrupt might look like this: // Populate IVT void init_ivt(void) { // Initialize

If ivthandleinterrupt enables interrupts during dispatch (e.g., by calling a function that enables interrupts), you risk re-entering the handler corrupting the context. Use a critical section or ensure interrupt nesting is properly managed by the hardware. ++i) { ivt[i] = default_handler

Just as a standard MMU maps virtual addresses to physical ones for the CPU, the IOMMU does the same for peripherals like GPUs and network cards.