Hi We have validate this driver in vm and physical machine, and works fine. Actually, we used existing interfaces to realize this driver, likes aarch64_insn_read and aarch64_insn_patch_text. These existing intefaces had validated a CPU.
> 2020年12月1日 上午2:05，Marc Zyngier <m...@kernel.org> 写道： > > On 2020-11-30 17:48, Rongwei Wang wrote: > >> The interfaces of this module is same as MSR module in user space, and to >> solve >> the problem that ARM platform has no similar MSR module. Using this >> interface, >> we did some pressure tests to test the stability and security of MSR driver. >> The >> test results show that the driver will not cause system panic if various >> illegal values and multithreading concurrent access are passed through the >> interface. > > It would certainly help if you described what problem you are trying > to solve here. In general, giving userspace access to random system > registers is a pretty bad idea. > > Are you trying to validate a CPU? a hypervisor? Or is it just a fun way > to check how many things you can poke before something catches fire? > > Thanks, > > M. > -- > Jazz is not dead. It just smells funny...
