From: Andrew Morton <akpm@linux-foundation.org>
To: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: Jonathan Corbet <corbet@lwn.net>,
David Hildenbrand <david@redhat.com>,
"Liam R . Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>,
Steven Rostedt <rostedt@goodmis.org>,
Masami Hiramatsu <mhiramat@kernel.org>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Jann Horn <jannh@google.com>, Pedro Falcato <pfalcato@suse.de>,
Zi Yan <ziy@nvidia.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Nico Pache <npache@redhat.com>,
Ryan Roberts <ryan.roberts@arm.com>, Dev Jain <dev.jain@arm.com>,
Barry Song <baohua@kernel.org>, Lance Yang <lance.yang@linux.dev>,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-doc@vger.kernel.org, linux-mm@kvack.org,
linux-trace-kernel@vger.kernel.org,
linux-kselftest@vger.kernel.org, Andrei Vagin <avagin@gmail.com>
Subject: Re: [PATCH v4 0/9] introduce VM_MAYBE_GUARD and make it sticky
Date: Tue, 18 Nov 2025 09:33:48 -0800 [thread overview]
Message-ID: <20251118093348.9dac5d7142dc6df182833612@linux-foundation.org> (raw)
In-Reply-To: <cover.1763460113.git.lorenzo.stoakes@oracle.com>
On Tue, 18 Nov 2025 10:17:42 +0000 Lorenzo Stoakes <lorenzo.stoakes@oracle.com> wrote:
> Currently, guard regions are not visible to users except through
> /proc/$pid/pagemap, with no explicit visibility at the VMA level.
>
> This makes the feature less useful, as it isn't entirely apparent which
> VMAs may have these entries present, especially when performing actions
> which walk through memory regions such as those performed by CRIU.
>
> This series addresses this issue by introducing the VM_MAYBE_GUARD flag
> which fulfils this role, updating the smaps logic to display an entry for
> these.
I updated mm-unstable to this version.
prev parent reply other threads:[~2025-11-18 17:33 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-11-18 10:17 Lorenzo Stoakes
2025-11-18 10:17 ` [PATCH v4 1/9] mm: introduce VM_MAYBE_GUARD and make visible in /proc/$pid/smaps Lorenzo Stoakes
2025-11-20 5:48 ` Lance Yang
2025-11-18 10:17 ` [PATCH v4 2/9] mm: add atomic VMA flags and set VM_MAYBE_GUARD as such Lorenzo Stoakes
2025-11-19 9:06 ` David Hildenbrand (Red Hat)
2025-11-20 6:11 ` Lance Yang
2025-11-18 10:17 ` [PATCH v4 3/9] mm: update vma_modify_flags() to handle residual flags, document Lorenzo Stoakes
2025-11-19 16:27 ` Vlastimil Babka
2025-11-19 16:36 ` Pedro Falcato
2025-11-18 10:17 ` [PATCH v4 4/9] mm: implement sticky VMA flags Lorenzo Stoakes
2025-11-21 16:09 ` David Hildenbrand (Red Hat)
2025-11-18 10:17 ` [PATCH v4 5/9] mm: introduce copy-on-fork VMAs and make VM_MAYBE_GUARD one Lorenzo Stoakes
2025-11-19 9:17 ` David Hildenbrand (Red Hat)
2025-11-18 10:17 ` [PATCH v4 6/9] mm: set the VM_MAYBE_GUARD flag on guard region install Lorenzo Stoakes
2025-11-19 9:16 ` David Hildenbrand (Red Hat)
2025-11-19 9:27 ` Lorenzo Stoakes
2025-11-18 10:17 ` [PATCH v4 7/9] tools/testing/vma: add VMA sticky userland tests Lorenzo Stoakes
2025-11-18 10:17 ` [PATCH v4 8/9] tools/testing/selftests/mm: add MADV_COLLAPSE test case Lorenzo Stoakes
2025-11-18 10:17 ` [PATCH v4 9/9] tools/testing/selftests/mm: add smaps visibility guard region test Lorenzo Stoakes
2025-11-18 17:33 ` Andrew Morton [this message]
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