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Add LunarLake to X86_BUG_MONITOR so that wake_up_idle_cpu() always sends an IPI, avoiding this potential delay. Closes: https://bugzilla.kernel.org/show_bug.cgi?id=3D219364 Cc: stable@vger.kernel.org # 6.11 Signed-off-by: Len Brown Reviewed-by: Rafael J. Wysocki --- v3 syntax tweak v2 leave smp_kick_mwait_play_dead() alone arch/x86/kernel/cpu/intel.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index e7656cbef68d..4b5f3d052151 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -586,7 +586,9 @@ static void init_intel(struct cpuinfo_x86 *c) c->x86_vfm =3D=3D INTEL_WESTMERE_EX)) set_cpu_bug(c, X86_BUG_CLFLUSH_MONITOR); =20 - if (boot_cpu_has(X86_FEATURE_MWAIT) && c->x86_vfm =3D=3D INTEL_ATOM_GOLDM= ONT) + if (boot_cpu_has(X86_FEATURE_MWAIT) && + (c->x86_vfm =3D=3D INTEL_ATOM_GOLDMONT || + c->x86_vfm =3D=3D INTEL_LUNARLAKE_M)) set_cpu_bug(c, X86_BUG_MONITOR); =20 #ifdef CONFIG_X86_64 --=20 2.43.0