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[47.55.120.4]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-70729c70979sm30626156d6.86.2025.07.28.07.08.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 28 Jul 2025 07:08:41 -0700 (PDT) Received: from jgg by wakko with local (Exim 4.97) (envelope-from ) id 1ugOWv-00000000APv-1G4L; Mon, 28 Jul 2025 11:08:41 -0300 Date: Mon, 28 Jul 2025 11:08:41 -0300 From: Jason Gunthorpe To: "Aneesh Kumar K.V (Arm)" Cc: 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 06/38] iommufd: Add and option to request for bar mapping with IORESOURCE_EXCLUSIVE Message-ID: <20250728140841.GA26511@ziepe.ca> References: <20250728135216.48084-1-aneesh.kumar@kernel.org> <20250728135216.48084-7-aneesh.kumar@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@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: <20250728135216.48084-7-aneesh.kumar@kernel.org> On Mon, Jul 28, 2025 at 07:21:43PM +0530, Aneesh Kumar K.V (Arm) wrote: > Signed-off-by: Aneesh Kumar K.V (Arm) Why would we need this? I can sort of understand why Intel would need it due to their issues with MCE, but ARM shouldn't care either way, should it? But also why is it an iommufd option? That doesn't seem right.. Jason