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Date:   Mon, 15 Oct 2018 16:14:58 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Vineet Gupta <vineet.gupta1@synopsys.com>
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        Richard Henderson <rth@twiddle.net>,
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Subject: Re: [PATCH 12/18] arch/tlb: Clean up simple architectures
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On Fri, Oct 12, 2018 at 07:40:04PM +0000, Vineet Gupta wrote:
> Very nice. Thx for doing this.
> 
> Once you have redone this, please point me to a branch so I can give this a spin.
> I've always been interested in tracking down / optimizing the full TLB flushes -
> which ARC implements by simply moving the MMU/process to a new ASID (TLB entries
> tagged with an 8 bit value - unique per process). When I started looking into this
> , a simple ls (fork+execve) would increment the ASID by 13 which I'd optimized to
> a reasonable 4. Haven't checked that in recent times though so would be fun to
> revive that measurement.

I just pushed out the latest version to:

  git://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git mm/tlb

(mandatory caution: that tree is unstable / throw-away)

I'll wait a few days to see what, if anything, comes back from 0day
before posting again.