Re: [PATCH v10 000/108] KVM TDX basic feature support

Wang, Lei
2023-01-03T08:27:09Z

On 10/30/2022 2:22 PM, isaku.yamahata@intel.com wrote:

> ** Detecting the TDX module readiness.
> TDX host patch series implements the detection of the TDX module availability
> and its initialization so that KVM can use it. Also it manages Host KeyID
> (HKID) assigned to guest TD.
> The assumed APIs the TDX host patch series provides are
> - int seamrr_enabled()
> Check if required cpu feature (SEAM mode) is available. This only check CPU
> feature availability. At this point, the TDX module may not be ready for KVM
> to use.
> - int init_tdx(void);
> Initialization of TDX module so that the TDX module is ready for KVM to use.
> - const struct tdsysinfo_struct *tdx_get_sysinfo(void);
> Return the system wide information about the TDX module. NULL if the TDX
> isn't initialized.
> - u32 tdx_get_global_keyid(void);
> Return global key id that is used for the TDX module itself.
> - int tdx_keyid_alloc(void);
> Allocate HKID for guest TD.
> - void tdx_keyid_free(int keyid);
> Free HKID for guest TD.

tdx_enable() is introduced by TDX host patch series and used in patch 5, should
it be added to this list too?