Intel Atom (32-bit OS): running as root or unprivileged user gives inconsistent results

[pkeller]

I built a 32-bit binary of msdtool-cli using:

cmake .. -DCMAKE_CXX_FLAGS=-m32 -DCMAKE_C_FLAGS=-m32

Running the resulting binary on an Intel Atom system under 32-bit CentOS 6.10 (fully updated) as root gave the following:

# ./mdstool-cli
System:
 * Operating System: Linux 2.6.32-754.24.3.el6.i686
 * Processor:         Intel(R) Atom(TM) CPU N2800   @ 1.86GHz
 * Microarchitecture: Unknown
 * Microcode: 269
 * Memory: 3.81 GiB

[snip]

Speculative Store Bypass:
 * Status: Not Affected
 * Speculative Store Bypass Disable: Not Required

but running it as an unprivileged user gave:

Speculative Store Bypass:
 * Status: Vulnerable
 * Speculative Store Bypass Disable: Not Available

All the other tests came up as "Not affected" in both cases.

Which result should I believe? Or should the tool be run as both root and non-root users and the worst outcome be selected?