From: Kevin Brodsky <kevin.brodsky@arm.com>
To: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Alexander Gordeev <agordeev@linux.ibm.com>,
Andreas Larsson <andreas@gaisler.com>,
Andrew Morton <akpm@linux-foundation.org>,
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>,
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
Date: Tue, 9 Sep 2025 11:10:34 +0200 [thread overview]
Message-ID: <652720ae-131e-4de0-bc65-e5c1bdc46186@arm.com> (raw)
In-Reply-To: <c07b8a65-7cef-4ddd-bd94-d2e275edc2a8@lucifer.local>
On 08/09/2025 18:56, Lorenzo Stoakes wrote:
> On Mon, Sep 08, 2025 at 08:39:24AM +0100, Kevin Brodsky wrote:
>> When the lazy MMU mode was introduced eons ago, it wasn't made clear
>> whether such a sequence was legal:
>>
>> arch_enter_lazy_mmu_mode()
>> ...
>> arch_enter_lazy_mmu_mode()
>> ...
>> arch_leave_lazy_mmu_mode()
>> ...
>> arch_leave_lazy_mmu_mode()
>>
>> It seems fair to say that nested calls to
>> arch_{enter,leave}_lazy_mmu_mode() were not expected, and most
>> architectures never explicitly supported it.
>
> This is compiling with CONFIG_USERFAULTFD at all commits and series is
> compiling with allmodconfig plus all mm selftests are passing so from my
> side this looks good, thanks for addressing issues and rebasing! :)
Great thank you for that extensive testing, very appreciated! Shall I
add your Reviewed-by to the whole series?
- Kevin
next prev parent reply other threads:[~2025-09-09 9:10 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-08 7:39 Kevin Brodsky
2025-09-08 7:39 ` [PATCH v2 1/7] mm: remove arch_flush_lazy_mmu_mode() Kevin Brodsky
2025-09-08 9:29 ` Yeoreum Yun
2025-09-09 9:00 ` David Hildenbrand
2025-09-08 7:39 ` [PATCH v2 2/7] mm: introduce local state for lazy_mmu sections Kevin Brodsky
2025-09-08 9:30 ` Yeoreum Yun
2025-09-09 5:40 ` Andrew Morton
2025-09-09 9:05 ` Kevin Brodsky
2025-09-09 9:07 ` David Hildenbrand
2025-09-09 9:40 ` Alexander Gordeev
2025-09-09 10:09 ` David Hildenbrand
2025-09-09 11:45 ` Alexander Gordeev
2025-09-09 11:54 ` David Hildenbrand
2025-09-09 13:49 ` Kevin Brodsky
2025-09-09 14:02 ` Kevin Brodsky
2025-09-09 14:28 ` David Hildenbrand
2025-09-10 15:16 ` Kevin Brodsky
2025-09-10 15:37 ` David Hildenbrand
2025-09-11 16:19 ` Kevin Brodsky
2025-09-11 18:14 ` David Hildenbrand
2025-09-12 7:26 ` Kevin Brodsky
2025-09-12 8:04 ` David Hildenbrand
2025-09-12 8:48 ` Kevin Brodsky
2025-09-12 8:55 ` David Hildenbrand
2025-09-12 12:37 ` Alexander Gordeev
2025-09-12 12:40 ` David Hildenbrand
2025-09-12 12:56 ` Alexander Gordeev
2025-09-12 13:02 ` David Hildenbrand
2025-09-12 14:05 ` Alexander Gordeev
2025-09-12 14:25 ` David Hildenbrand
2025-09-12 15:02 ` Kevin Brodsky
2025-09-09 14:38 ` Alexander Gordeev
2025-09-10 16:11 ` Kevin Brodsky
2025-09-11 12:06 ` Alexander Gordeev
2025-09-11 16:20 ` Kevin Brodsky
2025-09-09 10:57 ` Juergen Gross
2025-09-09 14:15 ` Kevin Brodsky
2025-09-09 10:08 ` Jürgen Groß
2025-09-08 7:39 ` [PATCH v2 3/7] arm64: mm: fully support nested " Kevin Brodsky
2025-09-08 9:30 ` Yeoreum Yun
2025-09-08 7:39 ` [PATCH v2 4/7] x86/xen: support nested lazy_mmu sections (again) Kevin Brodsky
2025-09-09 9:13 ` David Hildenbrand
2025-09-09 9:37 ` Jürgen Groß
2025-09-09 9:56 ` David Hildenbrand
2025-09-09 11:28 ` Kevin Brodsky
2025-09-09 9:42 ` Jürgen Groß
2025-09-08 7:39 ` [PATCH v2 5/7] powerpc/mm: support nested lazy_mmu sections Kevin Brodsky
2025-09-08 7:39 ` [PATCH v2 6/7] sparc/mm: " Kevin Brodsky
2025-09-08 7:39 ` [PATCH v2 7/7] mm: update lazy_mmu documentation Kevin Brodsky
2025-09-08 9:30 ` Yeoreum Yun
2025-09-08 16:56 ` [PATCH v2 0/7] Nesting support for lazy MMU mode Lorenzo Stoakes
2025-09-09 9:10 ` Kevin Brodsky [this message]
2025-09-09 2:16 ` Andrew Morton
2025-09-09 9:21 ` David Hildenbrand
2025-09-09 13:59 ` Kevin Brodsky
2025-09-12 15:25 ` Kevin Brodsky
2025-09-15 6:28 ` Alexander Gordeev
2025-09-15 11:19 ` Kevin Brodsky
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=652720ae-131e-4de0-bc65-e5c1bdc46186@arm.com \
--to=kevin.brodsky@arm.com \
--cc=Liam.Howlett@oracle.com \
--cc=agordeev@linux.ibm.com \
--cc=akpm@linux-foundation.org \
--cc=andreas@gaisler.com \
--cc=boris.ostrovsky@oracle.com \
--cc=bp@alien8.de \
--cc=catalin.marinas@arm.com \
--cc=christophe.leroy@csgroup.eu \
--cc=dave.hansen@linux.intel.com \
--cc=davem@davemloft.net \
--cc=david@redhat.com \
--cc=hpa@zytor.com \
--cc=jannh@google.com \
--cc=jgross@suse.com \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=lorenzo.stoakes@oracle.com \
--cc=maddy@linux.ibm.com \
--cc=mhocko@suse.com \
--cc=mingo@redhat.com \
--cc=mpe@ellerman.id.au \
--cc=npiggin@gmail.com \
--cc=peterz@infradead.org \
--cc=rppt@kernel.org \
--cc=ryan.roberts@arm.com \
--cc=sparclinux@vger.kernel.org \
--cc=surenb@google.com \
--cc=tglx@linutronix.de \
--cc=vbabka@suse.cz \
--cc=will@kernel.org \
--cc=xen-devel@lists.xenproject.org \
--cc=yeoreum.yun@arm.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox