diff options
| author | Chang S. Bae <chang.seok.bae@intel.com> | 2022-07-18 11:56:11 -0700 |
|---|---|---|
| committer | Borislav Petkov <bp@suse.de> | 2022-07-19 19:17:28 +0200 |
| commit | 9f01129382774d98ec21526f13da26a0630ee3d8 (patch) | |
| tree | eb115f50dc16ab7371c6b792181a261b6da0658f /arch | |
| parent | f17b168734c0fe47343a7502d012266a051f9942 (diff) | |
intel_idle: Add a new flag to initialize the AMX state
The non-initialized AMX state can be the cause of C-state demotion from C6
to C1E. This low-power idle state may improve power savings and thus result
in a higher available turbo frequency budget.
This behavior is implementation-specific. Initialize the state for the C6
entrance of Sapphire Rapids as needed.
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Chang S. Bae <chang.seok.bae@intel.com>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Tested-by: Zhang Rui <rui.zhang@intel.com>
Link: https://lkml.kernel.org/r/20220614164116.5196-1-chang.seok.bae@intel.com
Diffstat (limited to 'arch')
0 files changed, 0 insertions, 0 deletions