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Fri, 10 Jul 2026 14:11:13 -0700 (PDT) Received: from ubuntu-gnu-linux-24-04-3.hub ([2407:7000:af23:3e00:f127:785b:6e87:f831]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ccdf808379sm52881965ad.48.2026.07.10.14.11.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 10 Jul 2026 14:11:13 -0700 (PDT) From: Jiaxing Hu To: =?UTF-8?q?Heiko=20St=C3=BCbner?= Cc: Will Deacon , Joerg Roedel , Robin Murphy , iommu@lists.linux.dev, linux-rockchip@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] iommu/rockchip: implement .flush_iotlb_all Date: Sat, 11 Jul 2026 09:11:05 +1200 Message-ID: <20260710211105.9782-1-huhuvmb88@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260710111508.917486-1-huhuvmb88@gmail.com> References: <20260710060513.863714-1-huhuvmb88@gmail.com> <20260710111508.917486-1-huhuvmb88@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260710_141114_821514_58433D83 X-CRM114-Status: GOOD ( 10.19 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 10 Jul 2026, Heiko Stübner wrote: > accel/rocket is in mainline, so I guess the interesting question is, why > are you expecting your changes to be (stay?) out of tree? Thanks. I had been treating it as exploratory: single-layer inference runs on the open stack (rocket + Teflon) on RK3576, but chained inference does not, and I narrowed the failure to below the software surface (fixed-function hardware I cannot reach from an open board), so it felt too unfinished to send. But you are right that an RFC is the better way to handle it. I will clean up the RK3576 bring-up (power domains, clocks, IOMMU, DPU/RDMA, DTS) into an RFC against current mainline and post it, with the chained-task limitation described honestly. If you can point me at who else is working on the RK3576 NPU, I would be glad to compare notes. Thanks, Jiaxing