intel_idle: Use __update_spec_ctrl() in intel_idle_ibrs()

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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

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Waiman Long 2023-07-27 14:45:59 -04:00 • committed by Ingo Molnar

parent 2743fe89d4

commit 7506203089

1 changed files with 3 additions and 4 deletions

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drivers/idle/intel_idle.c

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