Re: [PATCH v6 7/7] x86/vmware: Add TDX hypercall support

[Dave Hansen]

On 1/9/24 00:40, Alexey Makhalov wrote:
> +#ifdef CONFIG_INTEL_TDX_GUEST
> +unsigned long vmware_tdx_hypercall(unsigned long cmd,
> +				   struct tdx_module_args *args)
> +{
> +	if (!hypervisor_is_type(X86_HYPER_VMWARE))
> +		return ULONG_MAX;
> +
> +	if (cmd & ~VMWARE_CMD_MASK) {
> +		pr_warn_once("Out of range command %lx\n", cmd);
> +		return ULONG_MAX;
> +	}
> +
> +	args->r10 = VMWARE_TDX_VENDOR_LEAF;
> +	args->r11 = VMWARE_TDX_HCALL_FUNC;
> +	args->r12 = VMWARE_HYPERVISOR_MAGIC;
> +	args->r13 = cmd;
> +	args->r15 = 0; /* CPL */
> +
> +	__tdx_hypercall(args);
> +
> +	return args->r12;
> +}
> +EXPORT_SYMBOL_GPL(vmware_tdx_hypercall);
> +#endif

This is the kind of wrapper that I was hoping for.  Thanks.

Acked-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>