Subject: [PATCH v3 02/11] x86/tdx: Introduce INTEL_TDX_GUEST config option

Add INTEL_TDX_GUEST config option to selectively compile
TDX guest support.

Signed-off-by: Kuppuswamy Sathyanarayanan <[email protected]>
Reviewed-by: Andi Kleen <[email protected]>
Reviewed-by: Tony Luck <[email protected]>
---
arch/x86/Kconfig | 15 +++++++++++++++
1 file changed, 15 insertions(+)

diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 0045e1b44190..ff79263aebd1 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -876,6 +876,21 @@ config ACRN_GUEST
IOT with small footprint and real-time features. More details can be
found in https://projectacrn.org/.

+config INTEL_TDX_GUEST
+ bool "Intel Trusted Domain eXtensions Guest Support"
+ depends on X86_64 && CPU_SUP_INTEL && PARAVIRT
+ depends on SECURITY
+ select PARAVIRT_XL
+ select X86_X2APIC
+ select SECURITY_LOCKDOWN_LSM
+ help
+ Provide support for running in a trusted domain on Intel processors
+ equipped with Trusted Domain eXtenstions. TDX is a new Intel
+ technology that extends VMX and Memory Encryption with a new kind of
+ virtual machine guest called Trust Domain (TD). A TD is designed to
+ run in a CPU mode that protects the confidentiality of TD memory
+ contents and the TD’s CPU state from other software, including VMM.
+
endif #HYPERVISOR_GUEST

source "arch/x86/Kconfig.cpu"
--
2.25.1


2021-06-19 20:37:33

by Juergen Gross

[permalink] [raw]
Subject: Re: [PATCH v3 02/11] x86/tdx: Introduce INTEL_TDX_GUEST config option

On 19.06.21 00:57, Kuppuswamy Sathyanarayanan wrote:
> Add INTEL_TDX_GUEST config option to selectively compile
> TDX guest support.
>
> Signed-off-by: Kuppuswamy Sathyanarayanan <[email protected]>
> Reviewed-by: Andi Kleen <[email protected]>
> Reviewed-by: Tony Luck <[email protected]>
> ---
> arch/x86/Kconfig | 15 +++++++++++++++
> 1 file changed, 15 insertions(+)
>
> diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
> index 0045e1b44190..ff79263aebd1 100644
> --- a/arch/x86/Kconfig
> +++ b/arch/x86/Kconfig
> @@ -876,6 +876,21 @@ config ACRN_GUEST
> IOT with small footprint and real-time features. More details can be
> found in https://projectacrn.org/.
>
> +config INTEL_TDX_GUEST
> + bool "Intel Trusted Domain eXtensions Guest Support"
> + depends on X86_64 && CPU_SUP_INTEL && PARAVIRT
> + depends on SECURITY
> + select PARAVIRT_XL

PARAVIRT_XL? Didn't you drop that?


Juergen

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Subject: Re: [PATCH v3 02/11] x86/tdx: Introduce INTEL_TDX_GUEST config option



On 6/19/21 4:59 AM, Juergen Gross wrote:
> PARAVIRT_XL? Didn't you drop that?

Yes. I removed it from previous patch. But forgot to remove it here.

I will fix this in next version.

--
Sathyanarayanan Kuppuswamy
Linux Kernel Developer