From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f200.google.com (mail-pl1-f200.google.com [209.85.214.200]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A181D48094F for ; Thu, 6 Aug 2026 23:36:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.200 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786059394; cv=none; b=tndsua+HMgNgErpQRTf0o2/Yp2t416Zk+AsjJw4F/6PaBtVBl5bpAb7RGbvhGWVmcSJ0OnE/0Ey0uPbcIel+jDUCN8TRVm34oZVojYeVLsUFqtZxWwEBu/YPYKfTx5ZayDQ9/mIMkDX4d7fiTewUuRMTxhrHP8CJbjgZZ7cI+xw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786059394; c=relaxed/simple; bh=X1lXC7wwYepEcyxXlelWc3xQjHjFJjQegmWHjMap6JE=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=rLc1HGdWEFlc4YNUSzakjZAiB6dtbquHf03b2bbDiRakQR98JhDB4L3DdE1KvnGRXhIPbslSO5l+liOieJA/kUKD9W8+W4c/Y66Jm0VzMKbBgBLkfEkhkTl9q5MMkhbohdhrZRmhSHOmuKLpYsj0mhS91Wl4TiVZK01zzGmZGF0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=RGqlbNEy; arc=none smtp.client-ip=209.85.214.200 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--seanjc.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="RGqlbNEy" Received: by mail-pl1-f200.google.com with SMTP id d9443c01a7336-2cf7dd9fd91so24417135ad.1 for ; Thu, 06 Aug 2026 16:36:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1786059389; x=1786664189; darn=lists.linux.dev; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:reply-to:from:to:cc:subject:date:message-id :reply-to:content-type; bh=Bl6f0kmYO+QvCHyY9ZYfUQzYrQcYJLjL3x7Z6ExdFrE=; b=RGqlbNEyJTVRdqBEnCLV32Ym/ouDUO1C5aqHfoGi1v0YWyI9NaHEl92ELcfqsqvqL/ 0rusC6d+svwT+TKjopjsnXQwDWibfsbwPRjHEcwYw/BReS45zm9GPECmm4rGPnih4S80 /JumUloA2krGjQoOshc0yj8ipcShLV8aknqT5Ak06xC4bmL+BepdXePHjAPNHPExJhlA t8A7zW1L/euQSJ2UOwhb9tgtc8p3aGTFRvxip3jIzEWlCuJs1kZo7egEoOnBb6djGK3R WqmCa2wwJSwOIVBnDjoy1cSYztn+mjOeJ9bLRYUkpJZK2rqNpwOoggOcjupBI+q86xWi 7dBQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1786059389; x=1786664189; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:reply-to:x-gm-message-state:from:to:cc:subject :date:message-id:reply-to:content-type; bh=Bl6f0kmYO+QvCHyY9ZYfUQzYrQcYJLjL3x7Z6ExdFrE=; b=TqQmiLukz9xgVs7Rk1zIH79Xk91kTpqputFMq5Y2H4irt4v1VkXsg9N5LUiLXXFy/K kY4aATfS820cnHqiYSDD5HBOEoNprqIEp+lwq9gXQofIV4rQhzt41lobxSh8+amEwBgA 7wJTbkM/c2RrNUl221KnKajx9DXQrchgHtHYAmun7gj51ZxfoegXXN6/XO5cR1UDEDw1 db/AKrkVpAU1+cEsxX3zYjP77hhJRFGa+Ys+/ZqL9QgwmGbYHj1vddWSoPm6mLWu21Ln n8SnQdm5TEfQ3qZPkvdfs72ND91px6oskX/IQgBLr013pseteewu8JFhf/BQxxHsvRU5 DqZA== X-Forwarded-Encrypted: i=1; AHgh+RpxbdsK7YfSLnnCa4O3bgu6qFjVifuAhoxnAIshpqlJCIDP7088uaj9x6tdj2ZphlJExRY3qFVwemBs8uHZFA==@lists.linux.dev X-Gm-Message-State: AOJu0Yyk7cJYb7xKzK2z2ECHQ9z4b24rvBuvtnopkDMXEUHY9j1IUKEJ 0qslHeXaIW2TIv8RVzVB3gCnUgGX6eg3h595QfLVJcDpR0hFYMyV5TOUAlkeTBAswfu2UvDQMMa Y6GIPFQ== X-Received: from pgav2.prod.google.com ([2002:a05:6a02:2dc2:b0:c85:9dd2:d11e]) (user=seanjc job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:7349:b0:3c6:3c5b:f2e1 with SMTP id adf61e73a8af0-3cbadcfcacfmr5222309637.32.1786059388428; Thu, 06 Aug 2026 16:36:28 -0700 (PDT) Reply-To: Sean Christopherson Date: Thu, 6 Aug 2026 16:35:21 -0700 In-Reply-To: <20260806233609.212337-1-seanjc@google.com> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260806233609.212337-1-seanjc@google.com> X-Mailer: git-send-email 2.55.0.679.g6767b8d81c-goog Message-ID: <20260806233609.212337-5-seanjc@google.com> Subject: [PATCH v6 04/51] x86/tsc: Restrict recalibrate_cpu_khz() export to p4-clockmod and powernow-k7 From: Sean Christopherson To: Kiryl Shutsemau , Rick Edgecombe , Sean Christopherson , Paolo Bonzini , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Ajay Kaher , Alexey Makhalov , Jan Kiszka , Dave Hansen , Andy Lutomirski , Peter Zijlstra , Juergen Gross , Daniel Lezcano , Thomas Gleixner , John Stultz Cc: Vitaly Kuznetsov , Broadcom internal kernel review list , Boris Ostrovsky , Stephen Boyd , Miroslav Lichvar , x86@kernel.org, linux-coco@lists.linux.dev, kvm@vger.kernel.org, linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, linux-kernel@vger.kernel.org, xen-devel@lists.xenproject.org, Michael Kelley , Tom Lendacky , Nikunj A Dadhania , David Woodhouse , David Woodhouse , Thomas Gleixner Content-Type: text/plain; charset="UTF-8" Export recalibrate_cpu_khz() only for its two users, p4-clockmod.ko and powernow-k7.ko, to help document that recalibration is relevant only to ancient CPUs. For all intents and purposes, no functional change intended. Signed-off-by: Sean Christopherson --- arch/x86/kernel/tsc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index bc4348585194..09bf10f322ba 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -943,7 +943,7 @@ void recalibrate_cpu_khz(void) cpu_khz_old, cpu_khz); #endif } -EXPORT_SYMBOL_GPL(recalibrate_cpu_khz); +EXPORT_SYMBOL_FOR_MODULES(recalibrate_cpu_khz, "p4-clockmod,powernow-k7"); static unsigned long long cyc2ns_suspend; -- 2.55.0.679.g6767b8d81c-goog