>- HPS usually doesn’t consume CPU cores but does consume memory > controller cycles and memory bandwidth. SW consumes both CPU cycles > and memory bandwidth, but is only a problem if administrators opt into > the scanning after weighing the cost benefit. Maybe there is a middle ground on platforms that support some s/w programmable DMA engine that can detect memory errors in a way that doesn't signal a fatal system error. Your s/w scanner can direct that DMA engine to read from the regions of memory that you want to scan, at a frequency that is compatible with your system load requirements and risk assessments. If your idea gets traction, maybe structure the code so that it can either use a CPU core scan a block of memory, or pass requests to a platform driver that can use a DMA engine to perform the scan. -Tony
