From patchwork Fri Apr 14 23:45:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 13212196 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 65D27C77B71 for ; Fri, 14 Apr 2023 23:49:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Date:MIME-Version:References:Subject:Cc :To:From:Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: List-Owner; bh=yJw9Rw0sftolosroci/ylXZfpxv5UZZ7PWM/1wrsGI8=; b=VFjngilaj0Y+td Wp0pusZM3qcqCAsX5pw4H5B79BJv/4ndq7aCb3em0i8EwdbixPbObjk/29A1wQyNJ9VwpY1Ms82kY moQwWa6thnGTHQcJDuDSj/jPii2WCGnfliQz2iFyk78FSnJDiGVch8av4EbAZFFXoEhfshCDe+LQM /yaZuOz27nXJBNbCOrgx8LjyjiRjPFHktlf1SF0VYjAP3fQPpEpLzEjs3kqvy/L0mpSx4epgIklst reXNlbY5yHd5HXR2saN3qQPX0nL2YTSKfOxSG9tkUpHeKxcGzAWzFIYIxZvxxaJVlNaQRCV4GHP0X YRuoa8dvx2f9nReLnQeA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pnTAp-00Aonh-1W; Fri, 14 Apr 2023 23:49:47 +0000 Received: from galois.linutronix.de ([193.142.43.55]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pnT6L-00AkjV-2n; Fri, 14 Apr 2023 23:45:18 +0000 Message-ID: <20230414232311.254849089@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1681515907; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=qlj4H3ejL+vBUDG3NY1lMMcGFIiTzrSNA2aqLKlihDE=; b=1GQ0vgasLWqRcJWgIXPbXDmKUvXohkJnXHYow4+Gk18ZVkMCsGTyrDjPv1CmK6RbyQU3xy sZOnCBi1gUZHMhyRrfBhTMtqyNFDPJ6vIKz6V9GUUqs40cNvVEv7vD+CBHvRT0wd1gUl1d 6b2tSiphU+RGH9LMrzC1SBAlXe4ncrHHHmvCSojPNfdfYrCZOS3cqdN5dvg1mrwkF+zHKS ZggDxsStwqH0PgeAnVkNUSmrn0NxE/MFHr8xTSF8rH/8cE10sWA0KKqw6/zjLrvWcuBEms WRc4LjINHUoNtUJjSQE1O0a6vHatkwkifR+Lal+9Qf7z5SXlNpUbZu7h4WPnRg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1681515907; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: references:references; bh=qlj4H3ejL+vBUDG3NY1lMMcGFIiTzrSNA2aqLKlihDE=; b=QX/aw2ZRTXXvpaXqpLyn2DL7d4KHZGqZGPQ3AUK084YoY4i+oS2d15EjnpvV8yHLp9Q5Sc 902bNwcd/YuBSyBA== From: Thomas Gleixner To: LKML Cc: x86@kernel.org, David Woodhouse , Andrew Cooper , Brian Gerst , "Arjan van de Veen" , Paolo Bonzini , Paul McKenney , Tom Lendacky , Sean Christopherson , Oleksandr Natalenko , Paul Menzel , "Guilherme G. Piccoli" , Piotr Gorski , David Woodhouse , Usama Arif , Juergen Gross , Boris Ostrovsky , xen-devel@lists.xenproject.org, Russell King , Arnd Bergmann , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Will Deacon , Guo Ren , linux-csky@vger.kernel.org, Thomas Bogendoerfer , linux-mips@vger.kernel.org, "James E.J. Bottomley" , Helge Deller , linux-parisc@vger.kernel.org, Paul Walmsley , Palmer Dabbelt , linux-riscv@lists.infradead.org, Mark Rutland , Sabin Rapan Subject: [patch 33/37] x86/topology: Store extended topology leaf information References: <20230414225551.858160935@linutronix.de> MIME-Version: 1.0 Date: Sat, 15 Apr 2023 01:45:07 +0200 (CEST) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230414_164510_119613_C9915695 X-CRM114-Status: UNSURE ( 9.86 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Save the extended topology leaf number if it exists and is valid in preparation of parallel CPU bringup. Signed-off-by: Thomas Gleixner --- arch/x86/include/asm/topology.h | 1 + arch/x86/kernel/cpu/topology.c | 3 +++ 2 files changed, 4 insertions(+) --- a/arch/x86/include/asm/topology.h +++ b/arch/x86/include/asm/topology.h @@ -121,6 +121,7 @@ extern unsigned int __max_die_per_packag #define topology_core_cpumask(cpu) (per_cpu(cpu_core_map, cpu)) #define topology_sibling_cpumask(cpu) (per_cpu(cpu_sibling_map, cpu)) +extern unsigned int topology_extended_leaf; extern unsigned int __max_logical_packages; #define topology_max_packages() (__max_logical_packages) --- a/arch/x86/kernel/cpu/topology.c +++ b/arch/x86/kernel/cpu/topology.c @@ -29,6 +29,8 @@ unsigned int __max_die_per_package __rea EXPORT_SYMBOL(__max_die_per_package); #ifdef CONFIG_SMP +unsigned int topology_extended_leaf __read_mostly; + /* * Check if given CPUID extended topology "leaf" is implemented */ @@ -72,6 +74,7 @@ int detect_extended_topology_early(struc if (leaf < 0) return -1; + topology_extended_leaf = leaf; set_cpu_cap(c, X86_FEATURE_XTOPOLOGY); cpuid_count(leaf, SMT_LEVEL, &eax, &ebx, &ecx, &edx);