linux-kernel - Re: [PATCH 00/12] Avoid synchronous TLB invalidation for intermediate page-table entries on arm64

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Message-ID: <20180831110054.475a3534@roar.ozlabs.ibm.com>
Date:   Fri, 31 Aug 2018 11:00:54 +1000
From:   Nicholas Piggin <npiggin@...il.com>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Will Deacon <will.deacon@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Benjamin Herrenschmidt <benh@....ibm.com>,
        Catalin Marinas <catalin.marinas@....com>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 00/12] Avoid synchronous TLB invalidation for
 intermediate page-table entries on arm64

On Thu, 30 Aug 2018 09:39:38 -0700
Linus Torvalds <torvalds@...ux-foundation.org> wrote:

> On Thu, Aug 30, 2018 at 9:15 AM Will Deacon <will.deacon@....com> wrote:
> >
> > It's also had a lot more testing, but has held up nicely so far on arm64.
> > I haven't figured out how to merge this yet, but I'll probably end up pulling
> > the core changes out onto a separate branch.  
> 
> This looks fine, and I'm actually ok getting the core changes through
> the arm64 branch, since this has been discussed across architectures,
> and I think "whoever does the work gets to drive the car".

Well it would help if powerpc say wanted to start using them without a
merge cycle lag. Not a huge issue because powerpc already does
reasonably well here and there's other work that can be done.

I will try to review the core changes carefully next week.

Thanks,
Nick