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It seems like it's not a microcode update fix, but an MSR killbit flip from the BIOS? [1] [1] - http://support.amd.com/TechDocs/41322_10h_Rev_Gd.pdf http://sup
by rincebrain 10y ago
It seems like it's not a microcode update fix, but an MSR killbit flip from the BIOS? [1]
[1] - http://support.amd.com/TechDocs/41322_10h_Rev_Gd.pdf http://support.amd.com/TechDocs/41322_10h_Rev_Gd.pdf page 66
- yuhong 10y agoYes, which reduces performance if I remember correctly. It was quite famous. They eventually released a fixed stepping, and Phenom II is not affected.
- informedperson 10y agoTrue, my mistake. (While it doesn't apply for this specific example, it's still the reason why one generally will see microcode-fixed errata go away rather quickly, independently of BIOS updates)