From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 75E5E347FCC for ; Sat, 28 Feb 2026 18:14:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302466; cv=none; b=FKGXJsBNcJUl4ks0POAD9vZzH8o6Qm96RKULnZWT/pXyLJ5IyaWt3DtPeaYHjGQuJ382u4uKwJ1LLqEv0ODq3/lHtlL2TL0KVuJZ/M7lzSw4X4bbcJy7dSaLe5qhK4HOGr/CbEIPiq58PoN/QXA/CUOxBhZHljpyAMQ5siwDm4k= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772302466; c=relaxed/simple; bh=p4tHaeILD0sPId4YCyPzLlDr66vfEo8TkOhqJ8Vh7Gc=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=npwKNUZtnZ3XmxGgZw5+IgdJItA3miOWfRlF9h2vuo4Uhouw26k4Dt4sTyu64Syb1woI4PxKMdEryitAZdo+yqzfrVd0qAJjdHOgWXH0rxwtkUqAGuzfJOniQ/OACKKh08sFOIFFtKftHXFeghdZyuCW40F7m5ybV21pu5rJWL0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=usCUfIa2; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="usCUfIa2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D9543C19423; Sat, 28 Feb 2026 18:14:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772302466; bh=p4tHaeILD0sPId4YCyPzLlDr66vfEo8TkOhqJ8Vh7Gc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=usCUfIa29+0opKkajaHbhu/eMatH/TCWSp6eEtRXFWy3Krn7POnlIMgnIJTA9l5Q+ fFDYseLOv6zYOG0edtMfsFjebi8WI/Rzbl81VHjokM1Lot75u+JHn22UTvAvQO331e jiemCbkkj0dOTlmtwV3Dlf1Ya8UovilCbVczFzNgrToXCrMY36gV6gT2lf56V129oM zNr8Ejrnjc3XTohmpTFlaSOP49SETQvJpccas1O8z7LLgu+1PN/PDLXI8RxJMERdA+ 5b2lKniDJa5lHUN0SS9Tm/265Tl/i7AaDM966P9spLd7pukNmLUSBcJCyPGFsnKMlv aMXOY6ygbW4fg== From: Sasha Levin To: patches@lists.linux.dev Cc: Sean V Kelley , "Rafael J. Wysocki" , Sasha Levin Subject: [PATCH 6.1 210/232] ACPI: CPPC: Fix remaining for_each_possible_cpu() to use online CPUs Date: Sat, 28 Feb 2026 13:11:03 -0500 Message-ID: <20260228181127.1592657-210-sashal@kernel.org> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20260228181127.1592657-1-sashal@kernel.org> References: <20260228181127.1592657-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit From: Sean V Kelley [ Upstream commit 56eb0c0ed345da7815274aa821a8546a073d7e97 ] per_cpu(cpc_desc_ptr, cpu) object is initialized for only the online CPUs via acpi_soft_cpu_online() --> __acpi_processor_start() --> acpi_cppc_processor_probe(). However, send_pcc_cmd() and acpi_get_psd_map() still iterate over all possible CPUs. In acpi_get_psd_map(), encountering an offline CPU returns -EFAULT, causing cppc_cpufreq initialization to fail. This breaks systems booted with "nosmt" or "nosmt=force". Fix by using for_each_online_cpu() in both functions. Fixes: 80b8286aeec0 ("ACPI / CPPC: support for batching CPPC requests") Signed-off-by: Sean V Kelley Link: https://patch.msgid.link/20260211212254.30190-1-skelley@nvidia.com Signed-off-by: Rafael J. Wysocki Signed-off-by: Sasha Levin --- drivers/acpi/cppc_acpi.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index c763c25424663..4382340fd9778 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -342,7 +342,7 @@ static int send_pcc_cmd(int pcc_ss_id, u16 cmd) end: if (cmd == CMD_WRITE) { if (unlikely(ret)) { - for_each_possible_cpu(i) { + for_each_online_cpu(i) { struct cpc_desc *desc = per_cpu(cpc_desc_ptr, i); if (!desc) @@ -504,7 +504,7 @@ int acpi_get_psd_map(unsigned int cpu, struct cppc_cpudata *cpu_data) else if (pdomain->coord_type == DOMAIN_COORD_TYPE_SW_ANY) cpu_data->shared_type = CPUFREQ_SHARED_TYPE_ANY; - for_each_possible_cpu(i) { + for_each_online_cpu(i) { if (i == cpu) continue; -- 2.51.0