Messages in this thread | | | Date | Mon, 30 Nov 2020 18:05:51 +0000 | From | Marc Zyngier <> | Subject | Re: [PATCH 0/3] arm64:msr: Add MSR driver |
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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...
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