Public bug reported:
We understand that the z patches for spectre mitigation in the kernel
include introduction of an interface to enable or disable branch
prediction on a per-process basis.
I don't know what that interface looks like and what the usability is
for production systems. It would be helpful to have some analysis here.
Is it done in a way that can be set before the process starts executing?
Is it inherited? Is it bound to the filesystem in some way? cgroups?
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Triaged
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Changed in: linux (Ubuntu)
Status: Incomplete => Triaged
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https://bugs.launchpad.net/bugs/1751851
Title:
request for analysis of per-process flag for controlling branch
prediction on z
Status in linux package in Ubuntu:
Triaged
Bug description:
We understand that the z patches for spectre mitigation in the kernel
include introduction of an interface to enable or disable branch
prediction on a per-process basis.
I don't know what that interface looks like and what the usability is
for production systems. It would be helpful to have some analysis
here. Is it done in a way that can be set before the process starts
executing? Is it inherited? Is it bound to the filesystem in some
way? cgroups?
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https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1751851/+subscriptions
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