On 2018 Mai 23, Pavel Machek wrote: > On Sat 2018-05-19 21:53:02, Christian Krüger wrote: > > Hi, > > > > Since the old "in-order-execution" Intel CPUs like the Intel Atom N270 > > (known for being installed in many Netbooks and Nettops) are not sensitive > > for "Meltdown" & "Spectre" , wouldn't it be a good idea to exclude these > > anyway "weak" CPUs from the costly patches by default? > > > > Browsing the web, I can "feel the difference" if the matching kernel options > > are applied on such a device. > > Can you also measure the difference? Placebo effect is hard to avoid. > > But yes, we do not need to do workarounds on non-buggy machines... > > Pavel
On my Atom N270 there doesn't seem to be any workaround active with kernel 4.14.42: localhost ~ # cat /sys/devices/system/cpu/vulnerabilities/* Not affected Not affected Not affected Christian, did you verified the mitigations are active on your system? What kernels are affected? -- Regards, Johannes
