Borislav Petkov píše v Pá 26. 01. 2018 v 12:58 +0100: > On Fri, Jan 26, 2018 at 12:45:35PM +0100, Petr Oros wrote: > > During time of facing the Spectre vulnerability and the requirement of > > handling > > different microcode updates, it has shown, that it would be useful to have > > additional information which microcode version was in BIOS, if the > > early-update > > routine will apply an update. > > Dmesg tells you if the update was applied or not. > > And if you really wanna know the old microcode revision, you can boot > with "dis_ucode_ldr" and do "grep microcode /proc/cpuinfo". >
Ohh, yes, it is easy and fast. Mainly in time when new microcodes are released frequently and microcode can be early updated from initrd too. But what in production? Edit boot params, restart server, grep /proc/cpuinfo and restart again? Why i can not read it just from dmesg? Thanks, -Petr
