From nobody Fri Dec 19 07:49:26 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 95B9C280A4D for ; Thu, 5 Jun 2025 19:25:01 +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=1749151503; cv=none; b=Y+CCD0KUAzhisx6dVJ43FpBzjrV/3c4rcP7gshJMfpzfPMxQVEkXyV4Ap0KcSkBHXwuMxmdIMgguqm1BODzLFIiZB7w8gjVt95iSMcA6y7ehPmxGSt1BZ/Bv9dO7DZxruk0cqRC/+bghx1uwqiGC+sxV2TWEqcIvQSQwF8ZkS2Q= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1749151503; c=relaxed/simple; bh=Q6VUb++4XOTCTCjcxAP97gZhJFg//ThEY0Q6wlCmFQg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=htR9q6+GDzSqIomr1gb8UU5lRtZw0DME3b3Erne0kkQZT8P+8dxwyKbrIkfa2CJIgyZypryWMcppphHJJkv/HdNBqpaV0A/zP64GKw2IvDBpKoqFIcj5NIVpRdxzWLEFVUv73p5qIct6+dOCVi9W1uN/AzntSfz+pZIsWB80C9A= 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=mKjQ8WSp; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=wyIRlaRO; 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="mKjQ8WSp"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="wyIRlaRO" From: "Ahmed S. Darwish" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1749151500; 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=rmtXB3vSta6fGqJCXxmMRAj9XLGXz6rgjPfCqdr78qY=; b=mKjQ8WSpkZemTMgGl+7sFxkplPjeD3kDN5lMzp4R0n/KxaPslykdvCMRnu6YU28wT6ilif fZ9WPJAJAG89+lclnDuo1tvmilTEi8Wipn7ikUCYTsF+HFk6ZkNw70KyzEVHoQLlKYUT1r 6tyo6MQ9cuGzbfWi0qXntAYxouXUS4MtbJG4XoKAUhfluVhWVDJI0tH6dG+rEnk1+WpP9e Ej6StNIvsF7Ggry02eX5c6JO/eJ30p20GrWO9vBrUpAHoDlk7LgdcOWcb5x8wqlxVK2OHV 64LJqfnZIylE1AtxjExLYCiJ7mH32H9XWgNyKnr6kIbGIbpIszedO0n1kYnpbQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1749151500; 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=rmtXB3vSta6fGqJCXxmMRAj9XLGXz6rgjPfCqdr78qY=; b=wyIRlaRO7MYNRZUfAKSdLDCVcyTw3QOuEx97Xwl6cxF0FSFqIIf+47iPrDadORCb1rlLPo vvwyb4If3VCXNHAw== To: Ingo Molnar , Borislav Petkov , Dave Hansen Cc: Thomas Gleixner , Andrew Cooper , "H. Peter Anvin" , Peter Zijlstra , Sean Christopherson , Sohil Mehta , Ard Biesheuvel , John Ogness , x86@kernel.org, x86-cpuid@lists.linux.dev, LKML , "Ahmed S. Darwish" Subject: [PATCH v2 16/27] x86/cacheinfo: Use parsed CPUID(0x2) Date: Thu, 5 Jun 2025 21:23:45 +0200 Message-ID: <20250605192356.82250-17-darwi@linutronix.de> In-Reply-To: <20250605192356.82250-1-darwi@linutronix.de> References: <20250605192356.82250-1-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/cacheinfo.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/arch/x86/kernel/cpu/cacheinfo.c b/arch/x86/kernel/cpu/cacheinf= o.c index adfa7e8bb865..39cd6db4f702 100644 --- a/arch/x86/kernel/cpu/cacheinfo.c +++ b/arch/x86/kernel/cpu/cacheinfo.c @@ -382,14 +382,14 @@ static void intel_cacheinfo_0x2(struct cpuinfo_x86 *c) { unsigned int l1i =3D 0, l1d =3D 0, l2 =3D 0, l3 =3D 0; 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) { switch (desc->c_type) { case CACHE_L1_INST: l1i +=3D desc->c_size; break; case CACHE_L1_DATA: l1d +=3D desc->c_size; break; --=20 2.49.0