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Message-ID: <9b0d1195-23bd-5bf9-0dd8-b2ca29165bbb@linux.intel.com>
Date:   Thu, 8 Mar 2018 10:23:21 -0800
From:   Tim Chen <tim.c.chen@...ux.intel.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     stable@...r.kernel.org, Andy Lutomirski <luto@...nel.org>,
        Nadav Amit <nadav.amit@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        Borislav Petkov <bp@...en8.de>,
        Dave Hansen <dave.hansen@...el.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Mel Gorman <mgorman@...e.de>,
        Peter Zijlstra <peterz@...radead.org>,
        Rik van Riel <riel@...hat.com>,
        Ingo Molnar <mingo@...nel.org>,
        David Woodhouse <dwmw@...zon.co.uk>, ak@...ux.intel.com,
        karahmed@...zon.de, pbonzini@...hat.com, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] x86/mm: Give each mm a unique ID

On 03/07/2018 09:30 AM, Greg Kroah-Hartman wrote:
> On Fri, Mar 02, 2018 at 01:32:09PM -0800, Tim Chen wrote:
>> From: Andy Lutomirski <luto@...nel.org>
>> commit: f39681ed0f48498b80455095376f11535feea332
>>
>> This adds a new variable to mmu_context_t: ctx_id.
>> ctx_id uniquely identifies the mm_struct and will never be reused.
>>
>> Signed-off-by: Andy Lutomirski <luto@...nel.org>
>> Reviewed-by: Nadav Amit <nadav.amit@...il.com>
>> Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
>> Cc: Andrew Morton <akpm@...ux-foundation.org>
>> Cc: Arjan van de Ven <arjan@...ux.intel.com>
>> Cc: Borislav Petkov <bp@...en8.de>
>> Cc: Dave Hansen <dave.hansen@...el.com>
>> Cc: Linus Torvalds <torvalds@...ux-foundation.org>
>> Cc: Mel Gorman <mgorman@...e.de>
>> Cc: Peter Zijlstra <peterz@...radead.org>
>> Cc: Rik van Riel <riel@...hat.com>
>> Cc: linux-mm@...ck.org
>> Link: http://lkml.kernel.org/r/413a91c24dab3ed0caa5f4e4d017d87b0857f920.1498751203.git.luto@kernel.org
>> Signed-off-by: Ingo Molnar <mingo@...nel.org>
>> Signed-off-by: Tim Chen <tim.c.chen@...ux.intel.com>
>> ---
>>  arch/x86/include/asm/mmu.h         | 15 +++++++++++++--
>>  arch/x86/include/asm/mmu_context.h |  5 +++++
>>  arch/x86/mm/tlb.c                  |  2 ++
>>  3 files changed, 20 insertions(+), 2 deletions(-)
>>
> 
> Does not apply to 4.4.y :(
> 
> Can you provide a working backport for that tree?
> 

Okay. Will do.  Thanks.

Tim

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