On Fri, Mar 02, 2018 at 01:32:09PM -0800, Tim Chen wrote:
> From: Andy Lutomirski <l...@kernel.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 <l...@kernel.org>
> Reviewed-by: Nadav Amit <nadav.a...@gmail.com>
> Reviewed-by: Thomas Gleixner <t...@linutronix.de>
> Cc: Andrew Morton <a...@linux-foundation.org>
> Cc: Arjan van de Ven <ar...@linux.intel.com>
> Cc: Borislav Petkov <b...@alien8.de>
> Cc: Dave Hansen <dave.han...@intel.com>
> Cc: Linus Torvalds <torva...@linux-foundation.org>
> Cc: Mel Gorman <mgor...@suse.de>
> Cc: Peter Zijlstra <pet...@infradead.org>
> Cc: Rik van Riel <r...@redhat.com>
> Cc: linux...@kvack.org
> Link: 
> http://lkml.kernel.org/r/413a91c24dab3ed0caa5f4e4d017d87b0857f920.1498751203.git.l...@kernel.org
> Signed-off-by: Ingo Molnar <mi...@kernel.org>
> Signed-off-by: Tim Chen <tim.c.c...@linux.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?

thanks,

greg k-h

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