Hi Vladimir,
When I run an --aarch32 guest with --debug this is the message that I'm
getting:
Info: (arm/aarch64/kvm.c) kvm__arch_enable_mte:146: MTE capability not available
Would you mind elaborating on the merits of the message that you are
proposing:
Info: (arm/aarch64/kvm.c) kvm__arch_enable_mte:124: MTE is incompatible with AArch32
Is it because it explains why the capability is not available?
Thanks,
Alex
On Fri, May 20, 2022 at 01:38:44PM +0100, Vladimir Murzin wrote:
> KVM doesn't support combination of MTE and AArch32 guest, so do not
> even try.
>
> Signed-off-by: Vladimir Murzin <vladimir.murzin@xxxxxxx>
> ---
> arm/aarch64/kvm.c | 5 +++++
> 1 file changed, 5 insertions(+)
>
> diff --git a/arm/aarch64/kvm.c b/arm/aarch64/kvm.c
> index 1b992dd..f3fe854 100644
> --- a/arm/aarch64/kvm.c
> +++ b/arm/aarch64/kvm.c
> @@ -120,6 +120,11 @@ void kvm__arch_enable_mte(struct kvm *kvm)
> .cap = KVM_CAP_ARM_MTE,
> };
>
> + if (kvm->cfg.arch.aarch32_guest) {
> + pr_debug("MTE is incompatible with AArch32");
> + return;
> + }
> +
> if (kvm->cfg.arch.mte_disabled) {
> pr_debug("MTE disabled by user");
> return;
> --
> 2.25.1
>
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