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Thu, 06 Nov 2025 09:09:02 -0800 (PST) From: Ritesh Harjani (IBM) To: Alexander Gordeev Cc: Kevin Brodsky , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Andreas Larsson , Andrew Morton , Boris Ostrovsky , Borislav Petkov , Catalin Marinas , Christophe Leroy , Dave Hansen , David Hildenbrand , "David S. Miller" , David Woodhouse , "H. Peter Anvin" , Ingo Molnar , Jann Horn , Juergen Gross , "Liam R. Howlett" , Lorenzo Stoakes , Madhavan Srinivasan , Michael Ellerman , Michal Hocko , Mike Rapoport , Nicholas Piggin , Peter Zijlstra , Ryan Roberts , Suren Baghdasaryan , Thomas Gleixner , Vlastimil Babka , Will Deacon , Yeoreum Yun , linux-arm-kernel@lists.infradead.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org, xen-devel@lists.xenproject.org, x86@kernel.org Subject: Re: [PATCH v4 07/12] mm: enable lazy_mmu sections to nest In-Reply-To: <87ikfn3yvs.ritesh.list@gmail.com> Date: Thu, 06 Nov 2025 22:31:27 +0530 Message-ID: <87h5v73xjs.ritesh.list@gmail.com> References: <20251029100909.3381140-1-kevin.brodsky@arm.com> <20251029100909.3381140-8-kevin.brodsky@arm.com> <87ms5050g0.ritesh.list@gmail.com> <50d1b63a-88d7-4484-82c0-3bde96e3207d-agordeev@linux.ibm.com> <87ikfn3yvs.ritesh.list@gmail.com> X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 Content-Type: text/plain Ritesh Harjani (IBM) writes: > For e.g... > > arch_enter_lazy_mmu_mode() > hpte_need_flush() > get_cpu_var() // this takes care of preempt_disable() > adds vpns to per-cpu batch[i] > put_cpu_var() // > arch_leave_lazy_mmu_mode() > Sorry, here is the more accurate call sequence for previous email. caller()... arch_enter_lazy_mmu_mode() ptep_xxx_() pte_update() hpte_need_flush() get_cpu_var() // this takes care of preempt_disable() adds vpns to per-cpu batch[i] put_cpu_var() // arch_leave_lazy_mmu_mode() -ritesh