OS-5661: lxbrand should have fallback vdso

Details

Issue Type:Improvement
Priority:4 - Normal
Status:Open
Created at:2016-09-09T17:46:10.000Z
Updated at:2019-08-28T17:20:35.237Z

People

Created by:Former user
Reported by:Former user

Labels

lxbrand

Description

If the branding is unable to map the vDSO in the proper position for commpage inference or if the system doesn't support TSC calls, it would be nice to have a fallback vDSO which merely made the regular syscalls.

This would shave a few nanoseconds and some stack usage off the regular vDSO, which could count on having a TSC-capable comm page all the time.

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