Hello! I'm working on a device driver for hardware that is being developed. I'm coding against the specification and hoping for the best. It would be very handy to have a mock implementation of the hardware so I could test the driver against it. In the end, it would be an integration test for the driver, which could be useful even after the hardware arrives. For example, I could emulate hardware failures and see how the driver reacts. Moreover, a driver test framework would be useful for others. One issue I'm facing is creating resources for the device. Luckily, the driver only needs memory resources. It should be simple to allocate such resources in system RAM, but I could not find a good way to do it. Either the resource allocation fails, or the kernel panics right away, or it panics when I run "cat /proc/iomem" I ended up limiting the memory available to the kernel using the "mem=" directive and hardcoding the address pointing to RAM beyond what the kernel uses. I would prefer to have an approach that doesn't require changes to the kernel command line. It there a safe way to allocate a memory resource in system RAM? -- Regards, Pavel Roskin -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
