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Date: Fri, 10 Nov 2017 11:39:54 -0800
From: Andi Kleen <ak@linux.intel.com>
To: Prarit Bhargava <prarit@redhat.com>
Cc: Thomas Gleixner <tglx@linutronix.de>, linux-kernel@vger.kernel.org,
        Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>,
        x86@kernel.org, Peter Zijlstra <peterz@infradead.org>,
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        Kan Liang <kan.liang@intel.com>, Borislav Petkov <bp@suse.de>,
        Stephane Eranian <eranian@google.com>,
        Arvind Yadav <arvind.yadav.cs@gmail.com>,
        Andy Lutomirski <luto@kernel.org>,
        Christian Borntraeger <borntraeger@de.ibm.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        Tom Lendacky <thomas.lendacky@amd.com>,
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        Mathias Krause <minipli@googlemail.com>,
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        Vitaly Kuznetsov <vkuznets@redhat.com>
Subject: Re: [PATCH v5 2/3] x86/topology: Avoid wasting 128k for package id
 array
Message-ID: <20171110193954.GK8522@tassilo.jf.intel.com>
References: <20171105165428.32108-1-prarit@redhat.com>
 <20171105165428.32108-3-prarit@redhat.com>
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> Andi's idea would work and the code would become much cleaner, if
> smp_store_cpu_info() only overwrote cpu_data for new physically hotplugged cpus.

Can always just use a separate per_cpu variable for this that is not cleared.

-Andi