On Wed, Aug 10, 2022 at 12:30:31PM -0700, Peter Collingbourne wrote: > Previously we allowed creating a memslot containing a private mapping that > was not VM_MTE_ALLOWED, but would later reject KVM_RUN with -EFAULT. Now > we reject the memory region at memslot creation time. > > Since this is a minor tweak to the ABI (a VMM that created one of > these memslots would fail later anyway), no VMM to my knowledge has > MTE support yet, and the hardware with the necessary features is not > generally available, we can probably make this ABI change at this point. I don't think that's a noticeable ABI change. As you said, such VMs would fail later anyway when trying to access such page. Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>
