Bug 206912 - Experiment with tweaking the alignment of instructions to avoid the perf issues from the recent Intel microcode update
Summary: Experiment with tweaking the alignment of instructions to avoid the perf issu...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: JavaScriptCore (show other bugs)
Version: WebKit Nightly Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Robin Morisset
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-01-28 15:55 PST by Robin Morisset
Modified: 2020-01-28 15:56 PST (History)
6 users (show)

See Also:

Attachments
WIP (18.99 KB, patch)
2020-01-28 15:55 PST, Robin Morisset 		no flags Details | Formatted Diff | Diff
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Description Robin Morisset 2020-01-28 15:55:28 PST 
See https://www.intel.com/content/dam/support/us/en/documents/processors/mitigations-jump-conditional-code-erratum.pdf

I am starting with a very basic patch which only deals with the simplest cases, in order to test if it actually brings us anything.
Comment 1 Robin Morisset 2020-01-28 15:55:48 PST 
Created attachment 389080 [details]
WIP