SRU request sent to kernel team mailing list:
https://lists.ubuntu.com/archives/kernel-team/2023-February/136880.html
** Description changed:
- Description:
- Enable Intel_idle for eagle stream.
+ == SRU Justification ==
+ Intel has requested the following patches which enable enable Intel_idle for
eagle stream.
- Target Kernel: Backport to 5.15
- Target Release: 22.04
+ Intel has customers that would like to use the intel_idle driver on latest
SPR (Sapphire Rapids).
+ These patches have all landed upstream, but are not in Jammy.
- Commit Ids:
-
- 7eac3bd38d18 intel_idle: Fix SPR C6 optimization (Merged in 5.18 kernel)
- 39c184a6a9a7 intel_idle: Fix the 'preferred_cstates' module parameter
(Merged in 5.18 kernel)
- 03eb65224e57 cpuidle: intel_idle: Drop redundant backslash at line end
(Merged in 5.18 kernel)
- 3a9cf77b60dc intel_idle: add core C6 optimization for SPR (Merged in 5.18
kernel)
- da0e58c038e6 intel_idle: add 'preferred_cstates' module argument (Merged
in 5.18 kernel)
- 9edf3c0ffef0 intel_idle: add SPR support(Merged in 5.18 kernel)
- 1548fac47a11 intel_idle: make SPR C1 and C1E be independent (Merged in
6.0 kernel)
+ These patches will enable customers to use Ubuntu 22.04 on new hardware
+ from Intel.
+
+
+ == Fixes ==
+ 9edf3c0ffef0 ("intel_idle: add SPR support")
+ da0e58c038e6 ("intel_idle: add 'preferred_cstates' module argument")
+ 3a9cf77b60dc ("intel_idle: add core C6 optimization for SPR")
+ 03eb65224e57 ("cpuidle: intel_idle: Drop redundant backslash at line end")
+ 39c184a6a9a7 ("intel_idle: Fix the 'preferred_cstates' module parameter")
+ 7eac3bd38d18 ("intel_idle: Fix SPR C6 optimization")
+ 1548fac47a11 ("intel_idle: make SPR C1 and C1E be independent")
+
+
+ == Regression Potential ==
+ Medium. These patches are specific to enable intel_idle support for Sapphire
Rapids. Changes
+ are specific to Intel and tested by Intel.
+
+
+ == Test Case ==
+ A test kernel was built with these patches and tested by Intel.
+ Intel tested on SPR-SP machine and see the correct 190us and 600us residency
for the C6 state.
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/2003267
Title:
[EGS] Backport intel_idle support for Eagle Stream Ubuntu 22.04
release
Status in intel:
Fix Released
Status in linux package in Ubuntu:
In Progress
Bug description:
== SRU Justification ==
Intel has requested the following patches which enable enable Intel_idle for
eagle stream.
Intel has customers that would like to use the intel_idle driver on latest
SPR (Sapphire Rapids).
These patches have all landed upstream, but are not in Jammy.
These patches will enable customers to use Ubuntu 22.04 on new hardware
from Intel.
== Fixes ==
9edf3c0ffef0 ("intel_idle: add SPR support")
da0e58c038e6 ("intel_idle: add 'preferred_cstates' module argument")
3a9cf77b60dc ("intel_idle: add core C6 optimization for SPR")
03eb65224e57 ("cpuidle: intel_idle: Drop redundant backslash at line end")
39c184a6a9a7 ("intel_idle: Fix the 'preferred_cstates' module parameter")
7eac3bd38d18 ("intel_idle: Fix SPR C6 optimization")
1548fac47a11 ("intel_idle: make SPR C1 and C1E be independent")
== Regression Potential ==
Medium. These patches are specific to enable intel_idle support for Sapphire
Rapids. Changes
are specific to Intel and tested by Intel.
== Test Case ==
A test kernel was built with these patches and tested by Intel.
Intel tested on SPR-SP machine and see the correct 190us and 600us residency
for the C6 state.
To manage notifications about this bug go to:
https://bugs.launchpad.net/intel/+bug/2003267/+subscriptions
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