linux-kernel - Re: [PATCH v18 012/121] KVM: TDX: Define TDX architectural definitions

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Date: Fri, 2 Feb 2024 09:02:27 +0800
From: Xiaoyao Li <xiaoyao.li@...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>, Kai Huang <kai.huang@...el.com>,
 chen.bo@...el.com, hang.yuan@...el.com, tina.zhang@...el.com,
 Sean Christopherson <sean.j.christopherson@...el.com>
Subject: Re: [PATCH v18 012/121] KVM: TDX: Define TDX architectural
 definitions

On 1/23/2024 7:52 AM, isaku.yamahata@...el.com wrote:
> From: Isaku Yamahata <isaku.yamahata@...el.com>
> 
> Define architectural definitions for KVM to issue the TDX SEAMCALLs.
> 
> Structures and values that are architecturally defined in the TDX module
> specifications the chapter of ABI Reference.
> 
> Co-developed-by: Sean Christopherson <sean.j.christopherson@...el.com>
> Signed-off-by: Sean Christopherson <sean.j.christopherson@...el.com>
> Signed-off-by: Isaku Yamahata <isaku.yamahata@...el.com>
> Reviewed-by: Paolo Bonzini <pbonzini@...hat.com>
> ---
> v18:
> - Add metadata field id
> ---
>   arch/x86/kvm/vmx/tdx_arch.h | 269 ++++++++++++++++++++++++++++++++++++
>   1 file changed, 269 insertions(+)
>   create mode 100644 arch/x86/kvm/vmx/tdx_arch.h
> 
> diff --git a/arch/x86/kvm/vmx/tdx_arch.h b/arch/x86/kvm/vmx/tdx_arch.h
> new file mode 100644
> index 000000000000..569d59c55229
> --- /dev/null
> +++ b/arch/x86/kvm/vmx/tdx_arch.h
> @@ -0,0 +1,269 @@
> +/* SPDX-License-Identifier: GPL-2.0 */
> +/* architectural constants/data definitions for TDX SEAMCALLs */
> +
> +#ifndef __KVM_X86_TDX_ARCH_H
> +#define __KVM_X86_TDX_ARCH_H
> +
> +#include <linux/types.h>
> +
> +/*
> + * TDX SEAMCALL API function leaves
> + */
> +#define TDH_VP_ENTER			0
> +#define TDH_MNG_ADDCX			1
> +#define TDH_MEM_PAGE_ADD		2
> +#define TDH_MEM_SEPT_ADD		3
> +#define TDH_VP_ADDCX			4
> +#define TDH_MEM_PAGE_RELOCATE		5
> +#define TDH_MEM_PAGE_AUG		6
> +#define TDH_MEM_RANGE_BLOCK		7
> +#define TDH_MNG_KEY_CONFIG		8
> +#define TDH_MNG_CREATE			9
> +#define TDH_VP_CREATE			10
> +#define TDH_MNG_RD			11
> +#define TDH_MR_EXTEND			16
> +#define TDH_MR_FINALIZE			17
> +#define TDH_VP_FLUSH			18
> +#define TDH_MNG_VPFLUSHDONE		19
> +#define TDH_MNG_KEY_FREEID		20
> +#define TDH_MNG_INIT			21
> +#define TDH_VP_INIT			22
> +#define TDH_MEM_SEPT_RD			25
> +#define TDH_VP_RD			26
> +#define TDH_MNG_KEY_RECLAIMID		27
> +#define TDH_PHYMEM_PAGE_RECLAIM		28
> +#define TDH_MEM_PAGE_REMOVE		29
> +#define TDH_MEM_SEPT_REMOVE		30
> +#define TDH_SYS_RD			34
> +#define TDH_MEM_TRACK			38
> +#define TDH_MEM_RANGE_UNBLOCK		39
> +#define TDH_PHYMEM_CACHE_WB		40
> +#define TDH_PHYMEM_PAGE_WBINVD		41
> +#define TDH_VP_WR			43
> +#define TDH_SYS_LP_SHUTDOWN		44
> +
> +#define TDG_VP_VMCALL_GET_TD_VM_CALL_INFO		0x10000
> +#define TDG_VP_VMCALL_MAP_GPA				0x10001
> +#define TDG_VP_VMCALL_GET_QUOTE				0x10002
> +#define TDG_VP_VMCALL_REPORT_FATAL_ERROR		0x10003
> +#define TDG_VP_VMCALL_SETUP_EVENT_NOTIFY_INTERRUPT	0x10004
> +

these are definitions shared with TDX guest codes, and already defined 
in arch/x86/include/asm/shared/tdx.h. Please drop it.

Other than above,

Reviewed-by: Xiaoyao Li <xiaoyao.li@...el.com>