The safest way to "disable" DMA without bricking the hardware is to use an IOMMU (Input/Output Memory Management Unit) in blocking mode .
If you are designing a system where the PLD should not have bus mastering capabilities, the most robust method is architectural removal. how to disable dma on pld
After implementing DMA disable, validate with: The safest way to "disable" DMA without bricking
April 17, 2026 Category: Security & Firmware validate with: April 17
Last updated: May 2026
If you have local administrator access or are trying to manually disconnect a managed account: Go to .
Hardening Your System: How to Disable DMA on a PLD-Based PCIe Device