From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pg1-f199.google.com (mail-pg1-f199.google.com [209.85.215.199]) (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 5784641B8D9 for ; Thu, 6 Aug 2026 23:36:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.215.199 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1786059394; cv=none; b=LA7kLynaV1qOJw/FYthmdlWvqPpyjmlYd+zPDyWJzc5kkyabzyfWIbd+Oi7jj/owwsiWIjd8hr9TuNrcTCGd2jKuSPim9LkRyFSn2g/z8pBKpI/p8hsP8gkgd2uPjZbXoEZYqrgZelLlBUDDiWYzwHXL4V2OSy+UMAVTCYan9cM= 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=PYVp2MfV; arc=none smtp.client-ip=209.85.215.199 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="PYVp2MfV" Received: by mail-pg1-f199.google.com with SMTP id 41be03b00d2f7-cb6dd278512so1611780a12.3 for ; Thu, 06 Aug 2026 16:36:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1786059389; x=1786664189; darn=vger.kernel.org; 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=PYVp2MfVOEWDFDxRKN84/PKiWyvbIzcu7P7uQ4Erve4pEIfjKG6I6JRYbwiUnHVRHj UNEBMz3CJD5CnZLpETc3AgtBG6Nt41HjP/AVSgc3LQstIS1mghd2y/ZgoSkEWdTETaVi FQ0GiG0I6w79YBc9ZFlTxqD62dnEFiZohXVH704P2bIfLybcwNy6rsmEDk02id+ru90K HOl1zB5RG4QOCUNzhFZIC+0v9taoPEWOvQUV02SAbVv10a90mwUH/wKVhKuVzbVM54Kz 5UMlUpxWo2Kb7NoyK6UD9/wi4+X2BoaLk5MnaAHn/ugu2w6Zfn2Yh/edLPLldyJVSKqh 4bsg== 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=Vvsi0WKisKNS9e8lcjdCl1QOdhAOWM6QJCu/HvL8t/k0M0qNfXoKR7OKHtftWAkQ3r fLz1BxPB44KZd8Eyyd+3+l6Sg0gY8Lzeax/CzeVOlYs9K9yNUYRCmjlTDaM/IqbyZWZY XVKCN0M4263LQ+Qcynv29vK+Rf4tQBKYE0itven8ahnu2P7pcwM65D1LkAmxMRm5RyU5 JgjwTbxrWgXTpJ7KF9g1XQ+jSvA7vCRlBoS2qLIIkxapsKUiAN0DTTRv1rbIW97l079N UsEspr4Mk5N5U5wChLDhaCKGF78hxGmTdW5wCOBn8jy2ez+2N7dOMxGfTfnIa/Bocc0+ BCBQ== X-Forwarded-Encrypted: i=1; AHgh+RoAV5rFKTU8PXYl/vITWNJyZpKcpMCTnIugsJkX+9Nrd9g2LLGCWtHZqkOHoyU9eInhy2FdZfkogWythAU=@vger.kernel.org X-Gm-Message-State: AOJu0YyxYl1N5dXpHR9vN9bGyyaDZRS3Pjd76zdy4OKXLD5Zpm+gJEEN AaZN2XAg0FuU5QwNV5g2RSgXluXbkZOhNji9rB+b9geXzxTP47RKw41dc2x/UhCWh+xRsJHPNaK kh8OXXg== 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: linux-hyperv@vger.kernel.org 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