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Date: Mon, 7 Apr 2025 11:35:43 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>, Hugh Dickins
 <hughd@google.com>, Nicholas Piggin <npiggin@gmail.com>, Guenter Roeck
 <linux@roeck-us.net>, Juergen Gross <jgross@suse.com>, Jeremy Fitzhardinge
 <jeremy@goop.org>, linux-kernel@vger.kernel.org, linux-mm@kvack.org,
 kasan-dev@googlegroups.com, sparclinux@vger.kernel.org,
 xen-devel@lists.xenproject.org, linuxppc-dev@lists.ozlabs.org,
 linux-s390@vger.kernel.org
Subject: Re: [PATCH v1 0/4] mm: Fix apply_to_pte_range() vs lazy MMU mode
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On Mon,  7 Apr 2025 17:11:26 +0200 Alexander Gordeev <agordeev@linux.ibm.com> wrote:

> This series is an attempt to fix the violation of lazy MMU mode context
> requirement as described for arch_enter_lazy_mmu_mode():
> 
>     This mode can only be entered and left under the protection of
>     the page table locks for all page tables which may be modified.
> 
> On s390 if I make arch_enter_lazy_mmu_mode() -> preempt_enable() and
> arch_leave_lazy_mmu_mode() -> preempt_disable() I am getting this:
>
> ...
>

Could you please reorganize this into two series?  One series which
should be fast-tracked into 6.15-rcX and one series for 6.16-rc1?

And in the first series, please suggest whether its patches should be
backported into -stable and see if we can come up with suitable Fixes:
targets?

Thanks.