The changes are too invasive (they will not backport cleanly), they are
not stable yet (there are still bugs being found in 4.14-rcX). The
performance implications are also not well-documented across the
platforms that we care about.
The opinion is that it is not practical or a good idea to
Let's defer to 18.04.
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https://bugs.launchpad.net/bugs/1718825
Title:
[Feature] Cristal Ridge: x86 Process Context IDentifiers (PCID)
support for OSV
Status in intel:
@Canonical
if the backporting works is not easy, we just move it into 18.04.
If the backporting is fine for you, just do it.
The patches are from outside who is not from Intel. we just find that
and list the patches here.
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It's really not clear to me whether some of the changes to
arch/x86/mm/tlb.c should be applied without additional prerequisite
patches. Can you please advise? Thanks.
** Changed in: linux (Ubuntu)
Status: Triaged => Incomplete
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Thanks
If possible,just take it.
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https://bugs.launchpad.net/bugs/1718825
Title:
[Feature] Cristal Ridge: x86 Process Context IDentifiers (PCID)
support for OSV
Status
Right away I notice some commits which look to be fixes for commits in
this series:
f34902c5c6c0 "x86/hibernate/64: Mask off CR3's PCID bits in the saved CR3"
c7ad5ad297e6 "x86/mm/64: Initialize CR4.PCIDE early"
a2105f8a9c38 "tools headers: Sync cpu features kernel ABI headers with tooling
** Information type changed from Proprietary to Public
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux (Ubuntu)
Status: New => Triaged
** Changed in: linux (Ubuntu)
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