Re: [PATCH] x86/msr: Restrict /dev/cpu/*/msr read and write to a single MSR per call

[Borislav Petkov]

On Fri, Jun 26, 2026 at 10:49:31AM -0700, H. Peter Anvin wrote:
> As you say, it is documented and intentional. It isn't necessarily useful
> for MSRs that behave like registers, but an MSR with I/O-like
> characteristics (say, a virtual MSR that accepts logging information) it can
> be useful.

I wouldn't mind at all if we spelled that out somewhere so that it is clear.
I really like the logging-by-writing-at-a-magic-MSR aspect of it.

-- 
Regards/Gruss,
    Boris.

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