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| author |   Waiman Long <longman@redhat.com> | 2023-07-27 14:45:59 -0400 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2023-10-07 11:33:28 +0200 |
| commit | 7506203089dceb1d9e1f35d37ad2e46d44798a6d (patch) | |
| tree | 69cc42d917a2eaa9ff7f344e0fdaa6f541298c50 /tools/perf/scripts/python/exported-sql-viewer.py | |
| parent | x86/idle: Disable IBRS when CPU is offline to improve single-threaded performance (diff) | |
| download | wireguard-linux-7506203089dceb1d9e1f35d37ad2e46d44798a6d.tar.xz wireguard-linux-7506203089dceb1d9e1f35d37ad2e46d44798a6d.zip | |
intel_idle: Use __update_spec_ctrl() in intel_idle_ibrs()
When intel_idle_ibrs() is called, it modifies the SPEC_CTRL MSR to 0
in order disable IBRS. However, the new MSR value isn't reflected in
x86_spec_ctrl_current which is at odd with the other code that keep track
of its state in that percpu variable. Use the new __update_spec_ctrl()
to have the x86_spec_ctrl_current percpu value properly updated.
Since spec-ctrl.h includes both msr.h and nospec-branch.h, we can remove
those from the include file list.
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Link: https://lore.kernel.org/r/20230727184600.26768-4-longman@redhat.com
Diffstat (limited to 'tools/perf/scripts/python/exported-sql-viewer.py')
0 files changed, 0 insertions, 0 deletions