Messages in this thread | | | Date | Tue, 1 Dec 2020 16:25:52 +0100 | From | Borislav Petkov <> | Subject | Re: [PATCH 0/3] arm64:msr: Add MSR driver |
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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
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