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[47.54.130.67]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8ca361aabe0sm63112726d6.44.2026.05.18.10.54.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 May 2026 10:54:36 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1wP2Am-0000000DUxu-0CPW; Mon, 18 May 2026 14:54:36 -0300 Date: Mon, 18 May 2026 14:54:36 -0300 From: Jason Gunthorpe To: Robin Murphy Cc: "Oguz, Yigit" , "joro@8bytes.org" , "will@kernel.org" , "baolu.lu@linux.intel.com" , "dwmw2@infradead.org" , "suravee.suthikulpanit@amd.com" , "nicolinc@nvidia.com" , "iommu@lists.linux.dev" , "linux-arm-kernel@lists.infradead.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH 0/3] iommu: Add PCI vendor:device ID to IOMMU fault logs Message-ID: <20260518175436.GT7702@ziepe.ca> References: <4cbd2bd2-9acc-4c72-a4f5-6c6cf31f71e1@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4cbd2bd2-9acc-4c72-a4f5-6c6cf31f71e1@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260518_105438_986340_58A15E21 X-CRM114-Status: GOOD ( 11.30 ) 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 Mon, May 18, 2026 at 04:52:57PM +0100, Robin Murphy wrote: > TBH I think the more appropriate solution would be to have vfio-pci register > its own fault handler, wherein it can properly deal with rate-limiting > and/or entirely suppressing fault reports from misbehaving userspace, and if > and when it does want to log something it is then free to do that in > whatever format it wants, independent of the underlying IOMMU driver. +1 Jason