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Tsirkin" To: Christoph Hellwig Cc: Srujana Challa , "virtualization@lists.linux.dev" , "kvm@vger.kernel.org" , "jasowang@redhat.com" , "eperezma@redhat.com" , Nithin Kumar Dabilpuram , Jerin Jacob Subject: Re: [EXTERNAL] Re: [PATCH v2 0/2] vhost-vdpa: Add support for NO-IOMMU mode Message-ID: <20241019201059-mutt-send-email-mst@kernel.org> References: <20240920140530.775307-1-schalla@marvell.com> <20241016134127-mutt-send-email-mst@kernel.org> Precedence: bulk X-Mailing-List: virtualization@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Wed, Oct 16, 2024 at 11:16:08PM -0700, Christoph Hellwig wrote: > On Wed, Oct 16, 2024 at 01:41:51PM -0400, Michael S. Tsirkin wrote: > > It's basically because vfio does, so we have to follow suit. > > That's a very bold argument, especially without any rationale of > > a) why you need to match the feature set Because people want to move from some vendor specific solution with vfio to a standard vdpa compatible one with vdpa. We could just block them since we don't support tainted kernels anyway, but it's a step in the right direction since it allows moving to virtio, and the kernel is tained so no big support costs (although qe costs do exist, as with any code). > b) how even adding it to vfio was agood idea That ship has sailed. -- MST