| 1 |
> They're new in general - they first appeared last week and they're |
| 2 |
> being treated as if they're related to Spectre. I've yet to see any |
| 3 |
> kind of official release of them, but that seems to be par for the |
| 4 |
> course for AMD the more I hunt around for documentation. It seems |
| 5 |
> like Suse first released it, and claimed that it disabled branch |
| 6 |
> prediction, whatever that means (certainly it can't completely disable |
| 7 |
> it without tanking performance). |
| 8 |
> |
| 9 |
|
| 10 |
From: |
| 11 |
https://www.phoronix.com/scan.php?page=news_item&px=AMD-Branch-Prediction-Still |
| 12 |
|
| 13 |
"I reached out to AMD and on Friday heard back. They wrote in an email to |
| 14 |
Phoronix that this Zen/17h microcode update does *not* disable branch |
| 15 |
prediction. They'll be working with SUSE to re-clarify this microcode |
| 16 |
update description" |
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