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[47.55.120.4]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4ae9963ba4bsm54605101cf.31.2025.07.29.16.19.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Jul 2025 16:19:49 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1ugtbo-00000000Mhy-3zTQ; Tue, 29 Jul 2025 20:19:48 -0300 Date: Tue, 29 Jul 2025 20:19:48 -0300 From: Jason Gunthorpe To: Jonathan Cameron Cc: "Aneesh Kumar K.V (Arm)" , linux-coco@lists.linux.dev, kvmarm@lists.linux.dev, linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, aik@amd.com, lukas@wunner.de, Samuel Ortiz , Xu Yilun , Suzuki K Poulose , Steven Price , Catalin Marinas , Marc Zyngier , Will Deacon , Oliver Upton Subject: Re: [RFC PATCH v1 11/38] KVM: arm64: CCA: register host tsm platform device Message-ID: <20250729231948.GJ26511@ziepe.ca> References: <20250728135216.48084-1-aneesh.kumar@kernel.org> <20250728135216.48084-12-aneesh.kumar@kernel.org> <20250729181045.0000100b@huawei.com> Precedence: bulk X-Mailing-List: kvmarm@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250729181045.0000100b@huawei.com> On Tue, Jul 29, 2025 at 06:10:45PM +0100, Jonathan Cameron wrote: > > +static struct platform_device cca_host_dev = { > Hmm. Greg is getting increasingly (and correctly in my view) grumpy with > platform devices being registered with no underlying resources etc as glue > layers. Maybe some of that will come later. Is faux_device a better choice? I admit to not knowing entirely what it is for.. But alternatively, why do we need a dummy "hw" struct device at all? Typically a subsystem like TSM should be structured to create its own struct devices.. I would expect this to just call 'register tsm' ? Jason