linux-kernel - Re: [PATCH v5 4/6] x86/mm: Introduce CONFIG_NUMA_KEEP

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Message-ID: <871rqtr5d5.fsf@nanos.tec.linutronix.de>
Date:   Mon, 17 Feb 2020 09:21:42 +0100
From:   Thomas Gleixner <tglx@...utronix.de>
To:     Dan Williams <dan.j.williams@...el.com>, linux-nvdimm@...ts.01.org
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Borislav Petkov <bp@...en8.de>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        David Hildenbrand <david@...hat.com>,
        Michal Hocko <mhocko@...e.com>, Ingo Molnar <mingo@...nel.org>,
        vishal.l.verma@...el.com, hch@....de, linux-kernel@...r.kernel.org,
        x86@...nel.org
Subject: Re: [PATCH v5 4/6] x86/mm: Introduce CONFIG_NUMA_KEEP_MEMINFO

eviewed-by: Thomas Gleixner <tglx@...utronix.de>
Dan Williams <dan.j.williams@...el.com> writes:

> Currently x86 numa_meminfo is marked __initdata in the
> CONFIG_MEMORY_HOTPLUG=n case. In support of a new facility to allow
> drivers to map reserved memory to a 'target_node'
> (phys_to_target_node()), add support for removing the __initdata
> designation for those users. Both memory hotplug and
> phys_to_target_node() users select CONFIG_NUMA_KEEP_MEMINFO to tell the
> arch to maintain its physical address to NUMA mapping infrastructure
> post init.
>
> Cc: Dave Hansen <dave.hansen@...ux.intel.com>
> Cc: Andy Lutomirski <luto@...nel.org>
> Cc: Peter Zijlstra <peterz@...radead.org>
> Cc: Thomas Gleixner <tglx@...utronix.de>
> Cc: Borislav Petkov <bp@...en8.de>
> Cc: "H. Peter Anvin" <hpa@...or.com>
> Cc: <x86@...nel.org>
> Cc: Andrew Morton <akpm@...ux-foundation.org>
> Cc: David Hildenbrand <david@...hat.com>
> Cc: Michal Hocko <mhocko@...e.com>
> Reviewed-by: Ingo Molnar <mingo@...nel.org>
> Signed-off-by: Dan Williams <dan.j.williams@...el.com>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>