On Tue, Dec 19, 2023 at 01:57:51PM -0800, Alexey Makhalov wrote:
> diff --git a/arch/x86/kernel/cpu/vmware.c b/arch/x86/kernel/cpu/vmware.c
> index 3aa1adaed18f..ef07ab7a07e1 100644
> --- a/arch/x86/kernel/cpu/vmware.c
> +++ b/arch/x86/kernel/cpu/vmware.c
> @@ -428,6 +428,30 @@ static bool __init vmware_legacy_x2apic_available(void)
> (eax & BIT(VCPU_LEGACY_X2APIC));
> }
>
> +#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 0;
> +
> + if (cmd & ~VMWARE_CMD_MASK) {
> + pr_warn("Out of range command %x\n", cmd);
> + return 0;
Is zero success? Shouldn't it be an error?
> + }
> +
> + args->r10 = VMWARE_TDX_VENDOR_LEAF;
> + args->r11 = VMWARE_TDX_HCALL_FUNC;
> + args->r12 = VMWARE_HYPERVISOR_MAGIC;
> + args->r13 = cmd;
> +
> + __tdx_hypercall(args);
> +
> + return args->r12;
> +}
> +EXPORT_SYMBOL_GPL(vmware_tdx_hypercall);
> +#endif
> +
> #ifdef CONFIG_AMD_MEM_ENCRYPT
> static void vmware_sev_es_hcall_prepare(struct ghcb *ghcb,
> struct pt_regs *regs)
> --
> 2.39.0
>
--
Kiryl Shutsemau / Kirill A. Shutemov
