On Sun, Apr 03, 2022 at 11:39:08PM +0800, Gavin Shan wrote:
> This supports SDEI_FEATURES hypercall. It's used by guest to
> retrieve the supported features, which are number of slots for
> the interrupt binding events and relative mode for the event
> handler. Currently, none of them is supported.
>
> Signed-off-by: Gavin Shan <gshan@xxxxxxxxxx>
> ---
> arch/arm64/kvm/sdei.c | 20 ++++++++++++++++++++
> 1 file changed, 20 insertions(+)
>
> diff --git a/arch/arm64/kvm/sdei.c b/arch/arm64/kvm/sdei.c
> index e1f6ab9800ee..ab0b7b5e3191 100644
> --- a/arch/arm64/kvm/sdei.c
> +++ b/arch/arm64/kvm/sdei.c
> @@ -527,6 +527,23 @@ static unsigned long hypercall_reset(struct kvm_vcpu *vcpu, bool private)
> return ret;
> }
>
> +static unsigned long hypercall_features(struct kvm_vcpu *vcpu)
> +{
> + unsigned long feature = smccc_get_arg(vcpu, 1);
> + unsigned long ret;
> +
> + switch (feature) {
> + case 0: /* BIND_SLOTS */
> + case 1: /* RELATIVE_MODE */
Can you create macros for these?
--
Thanks,
Oliver
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