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Sat, 08 Feb 2025 02:37:10 -0800 (PST) Received: from abityuts-desk1.ger.corp.intel.com ([134.191.196.181]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-ab7a275537csm110939466b.66.2025.02.08.02.37.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 08 Feb 2025 02:37:09 -0800 (PST) Message-ID: Subject: Re: [PATCH v2] intel_idle: introduce 'no_native' module parameter From: Artem Bityutskiy Reply-To: dedekind1@gmail.com To: David Arcari , linux-pm@vger.kernel.org Cc: Jonathan Corbet , Jacob Pan , Len Brown , Prarit Bhargava , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Date: Sat, 08 Feb 2025 12:37:06 +0200 In-Reply-To: <9241eff1-0c2d-4c82-a77d-cb8b67cab6f9@redhat.com> References: <20250128141139.2033088-1-darcari@redhat.com> <20250206164009.816232-1-darcari@redhat.com> <6c258775cdf2f8f3c370c0cb81daf22dacf6aeed.camel@gmail.com> <9241eff1-0c2d-4c82-a77d-cb8b67cab6f9@redhat.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.52.4 (3.52.4-2.fc40) Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Fri, 2025-02-07 at 12:13 -0500, David Arcari wrote: > > And if kernel was not configured with ACPI support, are these not > > recognized? Or > > they are just no-op basically? >=20 > They are a no-op - the flags are all set to false so ACPI C-state tables= =20 > are ignored. It would be nice to mention this too. Otherwise it sounds a bit incomplete.= Like this: If A then B. (nothing about "else"). Better way: If A then B, else C. :-) > >=20 > Sure - so is this better: >=20 > ``use_acpi`` - No-op in ACPI mode, the driver will consult ACPI tabees= =20 > for C-states on/off status in native mode. Yes, thanks!