linux-kernel - Re: [RFC PATCH 1/2] mm/mmu_gather: Invalidate TLB correctly on batch allocation failure and flush

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Message-ID: <20191218090133.GM2844@hirez.programming.kicks-ass.net>
Date:   Wed, 18 Dec 2019 10:01:33 +0100
From:   Peter Zijlstra <peterz@...radead.org>
To:     "Aneesh Kumar K.V" <aneesh.kumar@...ux.ibm.com>
Cc:     akpm@...ux-foundation.org, npiggin@...il.com, mpe@...erman.id.au,
        linux-mm@...ck.org, linux-kernel@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org
Subject: Re: [RFC PATCH 1/2] mm/mmu_gather: Invalidate TLB correctly on batch
 allocation failure and flush

On Wed, Dec 18, 2019 at 10:52:53AM +0530, Aneesh Kumar K.V wrote:
> Upstream ppc64 is broken after the commit: a46cc7a90fd8
> ("powerpc/mm/radix: Improve TLB/PWC flushes").
> 
> Also the patches are not adding any extra TLBI on either radix or hash.
> 
> Considering we need to backport this to stable and other distributions,
> how about we do this early patches in your series before the Kconfig rename?
> This should enable stable to pick them up with less dependencies. 

OK I suppose. Will you send a new series?