[PATCH v5 7/8] KVM: arm64: permit all VM_MTE_ALLOWED mappings with MTE enabled

[Cornelia Huck]

On Thu, Nov 03 2022, Peter Collingbourne <pcc at google.com> wrote:

> Certain VMMs such as crosvm have features (e.g. sandboxing) that depend
> on being able to map guest memory as MAP_SHARED. The current restriction
> on sharing MAP_SHARED pages with the guest is preventing the use of
> those features with MTE. Now that the races between tasks concurrently
> clearing tags on the same page have been fixed, remove this restriction.
>
> Note that this is a relaxation of the ABI.
>
> 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 | 8 --------
>  1 file changed, 8 deletions(-)

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