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

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Message-ID: <44e77307-8c49-e350-49e4-d5fa3261db27@intel.com>
Date:   Tue, 3 Jan 2023 16:26:59 +0800
From:   "Wang, Lei" <lei4.wang@...el.com>
To:     isaku.yamahata@...el.com, kvm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Cc:     isaku.yamahata@...il.com, Paolo Bonzini <pbonzini@...hat.com>,
        erdemaktas@...gle.com, Sean Christopherson <seanjc@...gle.com>,
        Sagi Shahar <sagis@...gle.com>,
        David Matlack <dmatlack@...gle.com>
Subject: Re: [PATCH v10 000/108] KVM TDX basic feature support

On 10/30/2022 2:22 PM, isaku.yamahata@...el.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?