[installer] add processor.max_cstate=1 to intel kernel cmdline #16339
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Blueve
reviewed
Aug 30, 2023
installer/default_platform.conf
Outdated
| @@ -481,7 +481,7 @@ bootloader_menu_config() | |||
| echo "Switch CPU vendor is: $CPUVENDOR" | |||
| if echo "$CPUVENDOR" | grep -i 'Intel' >/dev/null 2>&1; then | |||
| echo "Switch CPU cstates are: disabled" | |||
| CSTATES="intel_idle.max_cstate=0" | |||
| CSTATES="processor.max_cstate=0 intel_idle.max_cstate=0" | |||
There was a problem hiding this comment.
Let's use 1 here.
According to document, system will change it to 1 in runtime when user set it to 0.
To avoid confusion, let's use 1 here.
Xichen96
force-pushed
the
dev/xichenlin/master-fix-intel-idle
branch
from
a478770 to
2fe873c
Compare
Blueve
approved these changes
Aug 31, 2023
Xichen96
changed the title
|
Please provide the tested image version, not just the branch name. |
@qiluo-msft updated |
yxieca
approved these changes
Aug 31, 2023
|
@Xichen96 PR conflicts with 202205 branch |
mssonicbld
pushed a commit
to mssonicbld/sonic-buildimage
that referenced
this pull request
Aug 31, 2023
Why I did it This is a fix for PR [kernel] Change grub cmdline to set c-states to 0 for "Intel" CPUs by shlomibitton · Pull Request sonic-net#6051 · sonic-net/sonic-buildimage (github.com) The original PR will disable intel idle driver but it cannot limit the max c-state to 1 due to system will fall back to acpi idle driver. Currently intel_idle.max_cstate=0 is already present, which will disable intel idle driver. With the added option, common idle driver will be disabled as well, so there will not be idle management. This is to prevent a bug that can be triggered by idle instruction on intel platform. How I did it Add the option to installer file beside intel_idle.max_cstate=0
|
Cherry-pick PR to 202211: #16365 |
11 tasks
mssonicbld
pushed a commit
that referenced
this pull request
Aug 31, 2023
Why I did it This is a fix for PR [kernel] Change grub cmdline to set c-states to 0 for "Intel" CPUs by shlomibitton · Pull Request #6051 · sonic-net/sonic-buildimage (github.com) The original PR will disable intel idle driver but it cannot limit the max c-state to 1 due to system will fall back to acpi idle driver. Currently intel_idle.max_cstate=0 is already present, which will disable intel idle driver. With the added option, common idle driver will be disabled as well, so there will not be idle management. This is to prevent a bug that can be triggered by idle instruction on intel platform. How I did it Add the option to installer file beside intel_idle.max_cstate=0
mssonicbld
added
Included in 202211 Branch
and removed
Approved for 202211 Branch
Created PR to 202211 Branch
labels
|
@yxieca changes to 202205 will be in another pr |
11 tasks
StormLiangMS
added
Approved for 202211 Branch
Approved for 202305 Branch
and removed
Approved for 202211 Branch
labels
|
@Xichen96 PR conflicts with 202211 branch |
mssonicbld
pushed a commit
to mssonicbld/sonic-buildimage
that referenced
this pull request
Sep 3, 2023
Why I did it This is a fix for PR [kernel] Change grub cmdline to set c-states to 0 for "Intel" CPUs by shlomibitton · Pull Request sonic-net#6051 · sonic-net/sonic-buildimage (github.com) The original PR will disable intel idle driver but it cannot limit the max c-state to 1 due to system will fall back to acpi idle driver. Currently intel_idle.max_cstate=0 is already present, which will disable intel idle driver. With the added option, common idle driver will be disabled as well, so there will not be idle management. This is to prevent a bug that can be triggered by idle instruction on intel platform. How I did it Add the option to installer file beside intel_idle.max_cstate=0
|
Cherry-pick PR to 202305: #16425 |
11 tasks
mssonicbld
added a commit
that referenced
this pull request
Sep 3, 2023
mssonicbld
added
Included in 202305 Branch
and removed
Created PR to 202305 Branch
labels
sonic-otn
pushed a commit
to sonic-otn/sonic-buildimage
that referenced
this pull request
Sep 20, 2023
Why I did it This is a fix for PR [kernel] Change grub cmdline to set c-states to 0 for "Intel" CPUs by shlomibitton · Pull Request sonic-net#6051 · sonic-net/sonic-buildimage (github.com) The original PR will disable intel idle driver but it cannot limit the max c-state to 1 due to system will fall back to acpi idle driver. Currently intel_idle.max_cstate=0 is already present, which will disable intel idle driver. With the added option, common idle driver will be disabled as well, so there will not be idle management. This is to prevent a bug that can be triggered by idle instruction on intel platform. How I did it Add the option to installer file beside intel_idle.max_cstate=0
9 tasks
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Why I did it
This is a fix for PR [kernel] Change grub cmdline to set c-states to 0 for "Intel" CPUs by shlomibitton · Pull Request #6051 · sonic-net/sonic-buildimage (github.com)
The original PR will disable intel idle driver but it cannot limit the max c-state to 1 due to system will fall back to acpi idle driver.
Currently intel_idle.max_cstate=0 is already present, which will disable intel idle driver. With the added option, common idle driver will be disabled as well, so there will not be idle management. This is to prevent a bug that can be triggered by idle instruction on intel platform.
Work item tracking
How I did it
Add the option to installer file beside intel_idle.max_cstate=0
How to verify it
Manually changed kernel boot option to include the new parameter and reboot.
Which release branch to backport (provide reason below if selected)
Tested branch (Please provide the tested image version)
20201231.82,20181130.101
Description for the changelog
add processor.max_cstate=0 to intel kernel cmdline
Link to config_db schema for YANG module changes
A picture of a cute animal (not mandatory but encouraged)