linux-kernel - Re: [PATCH] mm: Add new vma flag VM_LOCAL

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Message-ID: <0100016388be5738-df8f9d12-7011-4e4e-ba5b-33973e5da794-000000@email.amazonses.com>
Date:   Tue, 22 May 2018 16:46:05 +0000
From:   Christopher Lameter <cl@...ux.com>
To:     Dave Hansen <dave.hansen@...ux.intel.com>
cc:     Boaz Harrosh <boazh@...app.com>, Jeff Moyer <jmoyer@...hat.com>,
        Matthew Wilcox <willy@...radead.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        "Kirill A. Shutemov" <kirill.shutemov@...ux.intel.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        linux-fsdevel <linux-fsdevel@...r.kernel.org>,
        "linux-mm@...ck.org" <linux-mm@...ck.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Peter Zijlstra <peterz@...radead.org>,
        Rik van Riel <riel@...hat.com>, Jan Kara <jack@...e.cz>,
        Matthew Wilcox <mawilcox@...rosoft.com>,
        Amit Golander <Amit.Golander@...app.com>
Subject: Re: [PATCH] mm: Add new vma flag VM_LOCAL_CPU

On Tue, 22 May 2018, Dave Hansen wrote:

> On 05/22/2018 09:05 AM, Boaz Harrosh wrote:
> > How can we implement "Private memory"?
>
> Per-cpu page tables would do it.

We already have that for percpu subsystem. See alloc_percpu()