What does this actually mean ???

[Pepi]

There is SO MUCH talk about these hardware security issues my head is swimming. I would like to know if my computer is patched or not Intel Xeon E5540 I've done all the update patches that came through.

pepi@pepi-HP-Z600-Workstation ~ $ dmesg | grep microcode
[ 0.000000] microcode: CPU0 microcode updated early to revision 0x19, date = 2013-06-21
[ 0.172201] microcode: CPU1 microcode updated early to revision 0x19, date = 2013-06-21
[ 0.175512] microcode: CPU2 microcode updated early to revision 0x19, date = 2013-06-21
[ 0.178252] microcode: CPU3 microcode updated early to revision 0x19, date = 2013-06-21
[ 0.923457] microcode: CPU0 sig=0x106a5, pf=0x1, revision=0x19
[ 0.923517] microcode: CPU1 sig=0x106a5, pf=0x1, revision=0x19
[ 0.923574] microcode: CPU2 sig=0x106a5, pf=0x1, revision=0x19
[ 0.923647] microcode: CPU3 sig=0x106a5, pf=0x1, revision=0x19
[ 0.923784] microcode: Microcode Update Driver: v2.01 <tigran@aivazian.fsnet.co.uk>, Peter Oruba

[thx-1138]

Unfortunately, nope. Since the bug was found & disclosed on vendors in 2017-06-01, it should report a newer date than this. However they might address it with a newer microcode update later on...

[Pepi]

Appears I'm OK with Meltdown ???

Screenshot from 2018-01-12 15-57-09.png

[thx-1138]

Yes. No need to have 'your head swimming' however and be extra worried...more patches & mitigations will come soon enough in the kernel etc, so if you simply continue to keep your machine updated regularly same way as always, you're all set...