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Howlett" , Lorenzo Stoakes , Vlastimil Babka , Jann Horn , Dev Jain , Luke Yang , jhladky@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 0/2] mm/mprotect: micro-optimization work Message-Id: <20260406103854.f48c27d7709beb680268d388@linux-foundation.org> In-Reply-To: References: <20260402141628.3367596-1-pfalcato@suse.de> <20260402113328.fd0a6f0e28cf74a651fa2291@linux-foundation.org> <6bl5bzq742c522nmhlshlnf6ho6y6a747l3zh63aagp7kfxymv@s2c6fsuikn4m> X-Mailer: Sylpheed 3.8.0beta1 (GTK+ 2.24.33; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: A700D20005 X-Stat-Signature: bqm8rsy6bnfwosjnecuu7zuwetiwt9sj X-Rspam-User: X-Rspamd-Server: rspam10 X-HE-Tag: 1775497137-169904 X-HE-Meta: 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 ejDCAvvv lhG5kcKUVUGy2Zsd8c5O/HQEJfOQaDJ0E8P3zwKQw3OKejC81k9PAYqvV85QrfcA+9GMrl2YDmy0uDdI+k7n/wOFchAKMhCl2EQ0Klg4Dy0xHk/Lou0BhOZ6+3pvvBx3UJpYr8OGwK/b6CmMD1vHe8Q62QHWEr706dLRrJrg5Q7FWEcrGOkcWJEwUqVM9CZ2/Jp6CFGTUWAHDo6ZNqlsVu7fmVfrr7BpAZtycHEsoZGxwKviwICY7QMcCVHNVrycTBtdlXx9N8u/f/0dXaVU1GqBLBQ== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, 6 Apr 2026 11:09:01 +0200 "David Hildenbrand (arm)" wrote: > On 4/6/26 10:29, Pedro Falcato wrote: > > On Thu, Apr 02, 2026 at 11:33:28AM -0700, Andrew Morton wrote: > >> On Thu, 2 Apr 2026 15:16:26 +0100 Pedro Falcato wrote: > >> > >>> Micro-optimize the change_protection functionality and the > >>> change_pte_range() routine. This set of functions works in an incredibly > >>> tight loop, and even small inefficiencies are incredibly evident when spun > >>> hundreds, thousands or hundreds of thousands of times. > >> > >> Thanks, I updated mm.git's mm-unstable branch to this version. > >> > >> The update is rather large. If people think it best to spill this work > >> into next -rc1 then please advise. > > > > I think it's a fairly safe change for 7.1, but I'm biased :) Perhaps others think > > otherwise. Thanks, I've firmly added these two to the second-week-of-merge-window pile. > It's mostly code movement, so it should be fine (unless we messed up > passed parameters somehow :) ) This (or an earlier version thereof) have been in mm.git since March 24.