[PATCH v5 6/8] KVM: arm64: unify the tests for VMAs in memslots when MTE is enabled

[Cornelia Huck]

On Thu, Nov 03 2022, Peter Collingbourne <pcc at google.com> 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.
>
> Signed-off-by: Peter Collingbourne <pcc at google.com>
> Reviewed-by: Catalin Marinas <catalin.marinas at arm.com>
> Reviewed-by: Steven Price <steven.price at arm.com>
> ---
>  arch/arm64/kvm/mmu.c | 25 ++++++++++++++++---------
>  1 file changed, 16 insertions(+), 9 deletions(-)

Reviewed-by: Cornelia Huck <cohuck at redhat.com>