Re: [PATCH v1 08/40] i386/tdx: Adjust the supported CPUID based on TDX restrictions

2022-08-25 Thread Xiaoyao Li
On 8/3/2022 3:33 PM, Chenyi Qiang wrote: On 8/2/2022 3:47 PM, Xiaoyao Li wrote: According to Chapter "CPUID Virtualization" in TDX module spec, CPUID bits of TD can be classified into 6 types: 1 | As configured | configu

Re: [PATCH v1 08/40] i386/tdx: Adjust the supported CPUID based on TDX restrictions

2022-08-25 Thread Xiaoyao Li
On 8/25/2022 7:26 PM, Gerd Hoffmann wrote: Hi, between VMM and TDs. Adjust supported CPUID for TDs based on TDX restrictions. Automatic adjustment depending on hardware capabilities isn't going to fly long-term, you'll run into compatibility problems sooner or later, for example when diffe

Re: [PATCH v1 08/40] i386/tdx: Adjust the supported CPUID based on TDX restrictions

2022-08-25 Thread Gerd Hoffmann
Hi, > between VMM and TDs. Adjust supported CPUID for TDs based on TDX > restrictions. Automatic adjustment depending on hardware capabilities isn't going to fly long-term, you'll run into compatibility problems sooner or later, for example when different hardware with diverging capabilities (f

Re: [PATCH v1 08/40] i386/tdx: Adjust the supported CPUID based on TDX restrictions

2022-08-03 Thread Xiaoyao Li
On 8/3/2022 3:33 PM, Chenyi Qiang wrote: On 8/2/2022 3:47 PM, Xiaoyao Li wrote: According to Chapter "CPUID Virtualization" in TDX module spec, CPUID bits of TD can be classified into 6 types: 1 | As configured | configu

Re: [PATCH v1 08/40] i386/tdx: Adjust the supported CPUID based on TDX restrictions

2022-08-03 Thread Chenyi Qiang
On 8/2/2022 3:47 PM, Xiaoyao Li wrote: According to Chapter "CPUID Virtualization" in TDX module spec, CPUID bits of TD can be classified into 6 types: 1 | As configured | configurable by VMM, independent of native value

[PATCH v1 08/40] i386/tdx: Adjust the supported CPUID based on TDX restrictions

2022-08-02 Thread Xiaoyao Li
According to Chapter "CPUID Virtualization" in TDX module spec, CPUID bits of TD can be classified into 6 types: 1 | As configured | configurable by VMM, independent of native value; --