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Howlett" , Lorenzo Stoakes , Vlastimil Babka , Jann Horn , David Hildenbrand , Dev Jain , Luke Yang , jhladky@redhat.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/4] mm/mprotect: micro-optimization work Message-Id: <20260319194230.bc660ec7c99b5d0e9ac9e902@linux-foundation.org> In-Reply-To: <20260319183108.1105090-1-pfalcato@suse.de> References: <20260319183108.1105090-1-pfalcato@suse.de> 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-Stat-Signature: 9rpt8bta14qewro4sbp4imifgjxgtbiz X-Rspam-User: X-Rspamd-Queue-Id: EDD6640007 X-Rspamd-Server: rspam12 X-HE-Tag: 1773974552-843997 X-HE-Meta: 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 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Thu, 19 Mar 2026 18:31:04 +0000 Pedro Falcato wrote: > After a long session of performance-cat herding, here's the first version > I am relatively ok with. > > 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. AI review has questions: https://sashiko.dev/#/patchset/20260319183108.1105090-1-pfalcato%40suse.de