From nobody Sat Oct 4 16:09:10 2025 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (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 49D182E7F22 for ; Fri, 15 Aug 2025 07:06:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755241565; cv=none; b=ttRZWz3943qu1C5dvgDdiLaAbkAFVr3jhqDtYyURQw0Cr6MAaZjgSeg2YQh41AfCZjTyC7DHGU2Adau01oHple5DocIIH1emaLMUYQZxOlqiALXuMhhsQ1yFrqDergjk1auPcq1UchXRQbTN3q7bH2pS90vJFLOd6c7JdzWBe8s= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755241565; c=relaxed/simple; bh=CPwt7tAmjsTsX1vXCApyLVizG83Rn5+DAyoFNbGuJjo=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=m+MFRcjqf5KzXjTLrZHmtCLSgDR2Da+flEWcIeoaXlmFga8y7Zpsd7ejPWRSGctYxgmBFBL7adYJSXDehj2NdRLK+QhqeYQnYJCNYVqWKw2yYVJUvB9Fd+NAfDcXC1QHqZduJ9PjypxuMpPvJukM6IpsK417YOD8HDQiD2+LMOY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=OgBzUVga; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=2stfjP2H; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="OgBzUVga"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="2stfjP2H" From: "Ahmed S. Darwish" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1755241562; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4FmTJ9/rl5HA0Hu5v4rlLAGUGAO4sGRS8L1AAbKLcQc=; b=OgBzUVgalD4UGe7XFKlQJ/rT091wuPjk/dePtTLR+ijiafuoLD7eJCrmDGU7bqyhzMBKf7 HCmUXNkUhKz7LSmQk2h+vQVMusqRQdsuUt1kmquKUMRNNhrMJZWOpZeFwPpz7n44A96cN+ E1uLv6ax6eZm2oUBl7eBpF1LNA3Gb/c9mJtTokgOeMEikPNZaH2symKPlAo3nWR5S4gCQ4 T6ZK9WpJfJNwSVviY5jn2BjJjn3Y2gIRWp/EUWjWSh+K5FfSpicLx8WoMcLDeBuvzTbvMD BpNClxmiJwXL8r9578gLb/clpqRuRusBq8RyQU8cF1dgJtAJ+tp8hGS9cNiQwA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1755241562; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=4FmTJ9/rl5HA0Hu5v4rlLAGUGAO4sGRS8L1AAbKLcQc=; b=2stfjP2HfLZhA/Qq9KBYi27UioWqV+vPmE1+XZYOeBX/KNbBev4vHbc1xpUMXtdz768cRS OgPq4Ny323dFsRBQ== To: Borislav Petkov , Ingo Molnar , Dave Hansen Cc: Thomas Gleixner , Andrew Cooper , "H. Peter Anvin" , David Woodhouse , Sean Christopherson , Peter Zijlstra , Sohil Mehta , John Ogness , x86@kernel.org, x86-cpuid@lists.linux.dev, LKML , "Ahmed S. Darwish" Subject: [PATCH v4 19/34] x86/cpu: Use parsed CPUID(0x2) Date: Fri, 15 Aug 2025 09:02:12 +0200 Message-ID: <20250815070227.19981-20-darwi@linutronix.de> In-Reply-To: <20250815070227.19981-1-darwi@linutronix.de> References: <20250815070227.19981-1-darwi@linutronix.de> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Use parsed CPUID(0x2) access instead of direct CPUID queries. Remove the max standard CPUID level check since the NULL check of cpuid_leaf_regs()'s result is equivalent. Signed-off-by: Ahmed S. Darwish --- arch/x86/kernel/cpu/intel.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/cpu/intel.c b/arch/x86/kernel/cpu/intel.c index 076eaa41b8c8..5eab9135b144 100644 --- a/arch/x86/kernel/cpu/intel.c +++ b/arch/x86/kernel/cpu/intel.c @@ -710,14 +710,14 @@ static void intel_tlb_lookup(const struct leaf_0x2_ta= ble *desc) static void intel_detect_tlb(struct cpuinfo_x86 *c) { const struct leaf_0x2_table *desc; - union leaf_0x2_regs regs; + struct cpuid_regs *regs; u8 *ptr; =20 - if (c->cpuid_level < 2) + regs =3D cpuid_leaf_regs(c, 0x2); + if (!regs) return; =20 - cpuid_leaf_0x2(®s); - for_each_cpuid_0x2_desc(regs, ptr, desc) + for_each_parsed_cpuid_0x2_desc(regs, ptr, desc) intel_tlb_lookup(desc); } =20 --=20 2.50.1