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Mon, 15 Dec 2025 21:16:54 -0800 (PST) Received: from dw-tp ([203.81.242.64]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-c0c25a87487sm14064659a12.7.2025.12.15.21.16.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 15 Dec 2025 21:16:53 -0800 (PST) From: Ritesh Harjani (IBM) To: Kevin Brodsky , linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, Kevin Brodsky , Alexander Gordeev , Andreas Larsson , Andrew Morton , Anshuman Khandual , 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 , Venkat Rao Bagalkote , 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 v6 03/14] powerpc/mm: implement arch_flush_lazy_mmu_mode() In-Reply-To: <20251215150323.2218608-4-kevin.brodsky@arm.com> Date: Tue, 16 Dec 2025 10:44:45 +0530 Message-ID: <87345b6m9m.ritesh.list@gmail.com> References: <20251215150323.2218608-1-kevin.brodsky@arm.com> <20251215150323.2218608-4-kevin.brodsky@arm.com> MIME-Version: 1.0 Content-Type: text/plain X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: A74CE16000D X-Stat-Signature: 8c64a4nch6bqc39wy8koer6ycdfn7ohc X-Rspam-User: X-HE-Tag: 1765862215-679419 X-HE-Meta: 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 aikXqHTY 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Kevin Brodsky writes: > Upcoming changes to the lazy_mmu API will cause > arch_flush_lazy_mmu_mode() to be called when leaving a nested > lazy_mmu section. > > Move the relevant logic from arch_leave_lazy_mmu_mode() to > arch_flush_lazy_mmu_mode() and have the former call the latter. The > radix_enabled() check is required in both as > arch_flush_lazy_mmu_mode() will be called directly from the generic > layer in a subsequent patch. > > Note: the additional this_cpu_ptr() and radix_enabled() calls on the > arch_leave_lazy_mmu_mode() path will be removed in a subsequent > patch. > > Acked-by: David Hildenbrand > Tested-by: Venkat Rao Bagalkote > Signed-off-by: Kevin Brodsky > --- > .../powerpc/include/asm/book3s/64/tlbflush-hash.h | 15 ++++++++++++--- > 1 file changed, 12 insertions(+), 3 deletions(-) Sorry I was away for a while. Thanks for taking care of the radix path as we had discussed previously here [1]. [1]: https://lore.kernel.org/all/87jz044xn4.ritesh.list@gmail.com/ The change looks good to me. So, please feel free to add: Reviewed-by: Ritesh Harjani (IBM)