On Tue, Dec 01, 2020 at 11:17:39PM +0800, Rongwei Wang wrote:
> In ARM, the system registers can only be accessed through msr and mrs,
> so the problem created by MSR driver (depend on rdmsr and wrmsr) in
> x86 is not necessarily present in ARM, which is very different from
> x86.
No, the point I'm making is that it doesn't matter what the architecture
does or does not, register *writes* from userspace are a bad bad idea
for the reasons I described.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette
