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: 13212059 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BCD10C77B79 for ; Fri, 14 Apr 2023 23:46:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230071AbjDNXqq (ORCPT ); Fri, 14 Apr 2023 19:46:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55132 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230377AbjDNXqI (ORCPT ); Fri, 14 Apr 2023 19:46:08 -0400 Received: from galois.linutronix.de (Galois.linutronix.de [IPv6:2a0a:51c0:0:12e:550::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3B0FFA5E6; Fri, 14 Apr 2023 16:45:25 -0700 (PDT) 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) Precedence: bulk List-ID: X-Mailing-List: linux-mips@vger.kernel.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);