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[herd] more on spurious updates#1772

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maranget wants to merge 2 commits intomasterfrom
global-updates-more
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[herd] more on spurious updates#1772
maranget wants to merge 2 commits intomasterfrom
global-updates-more

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@maranget maranget commented Apr 1, 2026

Followup to PR #1733

As introduced by PR #1733, each (potential) spurious update of the AF flag is "motivated" by a write that can unset this AF flag.

This PR reinforces the link by adding an equation that equates the value written and the value read by the update, resulting in better performance in some cases.

@maranget maranget marked this pull request as draft April 1, 2026 18:38
@maranget maranget force-pushed the global-updates-more branch 2 times, most recently from 1536082 to 5c70cc3 Compare April 3, 2026 08:52
As introduced by PR #1733 each (potential) spurious update
of the AF flag is "motivated" by a write that can unset this AF flag.

This PR reinforces the link by adding an equation that equates
the value written and the value read by the update, resulting
in better performance in some cases.
@maranget maranget force-pushed the global-updates-more branch from 5c70cc3 to cc83fbc Compare April 3, 2026 08:59
@maranget maranget marked this pull request as ready for review April 3, 2026 08:59
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