Jason Gunthorpe <jgg@xxxxxxxx> writes: > On Mon, Jul 28, 2025 at 07:21:43PM +0530, Aneesh Kumar K.V (Arm) wrote: >> Signed-off-by: Aneesh Kumar K.V (Arm) <aneesh.kumar@xxxxxxxxxx> > > 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 This is based on our previous discussion https://lore.kernel.org/all/20250606120919.GH19710@xxxxxxxxxx IIUC, we intend to request the resource in exclusive mode for secure guests—regardless of whether the platform is Intel or ARM. Could you help clarify the MCE issue observed on Intel platforms in this context? -aneesh
