On 09/27/2011 09:53 AM, Blue Swirl wrote: >> > So how would you emulate cache lines with line locking on KVM? > The cache would be a MMIO device which registers to handle all memory > space. Configuring the cache controller changes how the device > operates. Put this device between CPU and memory and other devices. > Performance would probably be horrible, so CPU should disable the > device automatically after some time. >
Seems like a better alternative would be to add an mmio device when a line is actually locked. And the device would cover *only* the locked line. I assume that following the boot process these lines are unlocked, and the normal running state of the system would have none of these mmio devices active. r~
