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[142.167.219.86]) by smtp.gmail.com with ESMTPSA id af79cd13be357-7caf752a60fsm159257985a.42.2025.05.07.07.40.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 07 May 2025 07:40:39 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1uCfws-000000011tV-36y7; Wed, 07 May 2025 11:40:38 -0300 Date: Wed, 7 May 2025 11:40:38 -0300 From: Jason Gunthorpe To: Rob Clark Cc: iommu@lists.linux.dev, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, Rob Clark , Will Deacon , Robin Murphy , Joerg Roedel , Kevin Tian , Nicolin Chen , Joao Martins , "moderated list:ARM SMMU DRIVERS" , open list Subject: Re: [PATCH v2] iommu/io-pgtable-arm: Add quirk to quiet WARN_ON() Message-ID: <20250507144038.GC33739@ziepe.ca> References: <20250507142953.269300-1-robdclark@gmail.com> Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250507142953.269300-1-robdclark@gmail.com> On Wed, May 07, 2025 at 07:29:51AM -0700, Rob Clark wrote: > From: Rob Clark > > In situations where mapping/unmapping sequence can be controlled by > userspace, attempting to map over a region that has not yet been > unmapped is an error. But not something that should spam dmesg. > > Now that there is a quirk, we can also drop the selftest_running > flag, and use the quirk instead for selftests. > > Signed-off-by: Rob Clark > --- > Sending v2 stand-alone, since I'm not quite ready to send a new > iteration of the full VM_BIND series. And with selftest_running > removed, I think this patch stands on it's own. (And maybe there > is still time to sneak this in for v6.16, removing an iommu dep > for the VM_BIND series in v6.17?) You should just remove the warn on completely, no other driver does this. Jason