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Re: Next Q, re amd64-microcode

On Tue, 28 Jul 2015, Gene Heskett wrote:
> [    0.053621] CPU0: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ 
> stepping 02
> Midway thru the dmesg after the reboot, dmesg reports:
> [    2.893141] microcode: AMD CPU family 0xf not supported

It is as the kernel said...

> My google-fu has located where AMD says family 10h is the starter, the 
> first cpu to support this, so am I to assume that the 0xf is too early?

There is no *working* microcode update facility on that AMD CPU.  I *think*
there is actually an extremely broken one that must not be used, but I could
be wrong about that, and it doesn't matter anyway.

> Is there no applicable microcode for the above CPU?

No, there isn't, at least for operational system use.  AMD never published
any microcode update data for family 0x0f, AFAIK.

I don't know about BIOS use (maybe the thing can be updated exactly once) or
the archive vaults of the AMD processor development labs :-)

  "One disk to rule them all, One disk to find them. One disk to bring
  them all and in the darkness grind them. In the Land of Redmond
  where the shadows lie." -- The Silicon Valley Tarot
  Henrique Holschuh

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