Re: Patch "x86/mm: Give each mm TLB flush generation a unique ID" has been added to the 4.9-stable tree

[Greg KH <gregkh@linuxfoundation.org>]

On Thu, Mar 08, 2018 at 10:27:56AM -0800, Tim Chen wrote:
> On 03/07/2018 09:37 AM, gregkh@linuxfoundation.org wrote:
> > 
> > This is a note to let you know that I've just added the patch titled
> > 
> >     x86/mm: Give each mm TLB flush generation a unique ID
> > 
> > to the 4.9-stable tree which can be found at:
> >     http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
> > 
> > The filename of the patch is:
> >      x86-mm-give-each-mm-tlb-flush-generation-a-unique-id.patch
> > and it can be found in the queue-4.9 subdirectory.
> > 
> > If you, or anyone else, feels it should not be added to the stable tree,
> > please let <stable@vger.kernel.org> know about it.
> > 
> > 
> > From f39681ed0f48498b80455095376f11535feea332 Mon Sep 17 00:00:00 2001
> > From: Andy Lutomirski <luto@kernel.org>
> > Date: Thu, 29 Jun 2017 08:53:15 -0700
> > Subject: x86/mm: Give each mm TLB flush generation a unique ID
> > 
> > From: Andy Lutomirski <luto@kernel.org>
> > 
> > commit f39681ed0f48498b80455095376f11535feea332 upstream.
> > 
> > This adds two new variables to mmu_context_t: ctx_id and tlb_gen.
> > ctx_id uniquely identifies the mm_struct and will never be reused.
> > For a given mm_struct (and hence ctx_id), tlb_gen is a monotonic
> 
> Greg, I've only pulled the unique ctx_id part of the original patch and not the
> tlb_gen changes. The unique ctx_id is a very simple change
> without needing other related changes that tlb_gen will require.
> 
> You may want to update the comment to reflect this.

I try to keep the commit text identical, but am willing to add a note at
the top or usually, the bottom of the text to show what changed in the
specific stable patch.  Can you give me some text that I can put there
to reflect what you changed here?

thanks,

greg k-h