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Date: Mon, 8 Sep 2025 19:16:02 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Kevin Brodsky <kevin.brodsky@arm.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Alexander Gordeev
 <agordeev@linux.ibm.com>, Andreas Larsson <andreas@gaisler.com>, Boris
 Ostrovsky <boris.ostrovsky@oracle.com>, Borislav Petkov <bp@alien8.de>,
 Catalin Marinas <catalin.marinas@arm.com>, Christophe Leroy
 <christophe.leroy@csgroup.eu>, Dave Hansen <dave.hansen@linux.intel.com>,
 David Hildenbrand <david@redhat.com>, "David S. Miller"
 <davem@davemloft.net>, "H. Peter Anvin" <hpa@zytor.com>, Ingo Molnar
 <mingo@redhat.com>, Jann Horn <jannh@google.com>, Juergen Gross
 <jgross@suse.com>, "Liam R. Howlett" <Liam.Howlett@oracle.com>, Lorenzo
 Stoakes <lorenzo.stoakes@oracle.com>, Madhavan Srinivasan
 <maddy@linux.ibm.com>, Michael Ellerman <mpe@ellerman.id.au>, Michal Hocko
 <mhocko@suse.com>, Mike Rapoport <rppt@kernel.org>, Nicholas Piggin
 <npiggin@gmail.com>, Peter Zijlstra <peterz@infradead.org>, Ryan Roberts
 <ryan.roberts@arm.com>, Suren Baghdasaryan <surenb@google.com>, Thomas
 Gleixner <tglx@linutronix.de>, Vlastimil Babka <vbabka@suse.cz>, Will
 Deacon <will@kernel.org>, Yeoreum Yun <yeoreum.yun@arm.com>,
 linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org,
 sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org
Subject: Re: [PATCH v2 0/7] Nesting support for lazy MMU mode
Message-Id: <20250908191602.61160a7990b9ea418de758c7@linux-foundation.org>
In-Reply-To: <20250908073931.4159362-1-kevin.brodsky@arm.com>
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On Mon,  8 Sep 2025 08:39:24 +0100 Kevin Brodsky <kevin.brodsky@arm.com> wrote:

> The main change enabling nesting is patch 2, following the approach
> suggested by Catalin Marinas [4]: have enter() return some state and
> the matching leave() take that state. 

This is so totally the correct way.  Thanks.