mirror of https://github.com/acidanthera/audk.git
3a3b12cbda
Currently, TDX exposes MTRR CPUID bit to TDX VM. So based on the CPUID, the guest software components (OVMF/TDVF and guest kernel) will access MTRR MSRs. One problem for guest to use of MTRR is the change of MTRR setting needs to set CR0.CD=1, which will case #VE for TDX. For Linux kernel, there is a mechanism called SW defined MTRR introduced by the patch https://lore.kernel.org/all/20230502120931. 20719-4-jgross@suse.com/. If this is integrated for TDX guest, then Linux kernel will not access any MTRR MSRs. So we update MtrrLibIsMtrrSupported() to always return false for TD-Guest, then TDVF will not access MTRR MSRs at all. Cc: Ray Ni <ray.ni@intel.com> Cc: Rahul Kumar <rahul1.kumar@intel.com> Cc: Gerd Hoffmann <kraxel@redhat.com> Cc: Jiaxin Wu <jiaxin.wu@intel.com> Cc: Jiewen Yao <jiewen.yao@intel.com> Cc: Binbin Wu <binbin.wu@intel.com> Signed-off-by: Min Xu <min.m.xu@intel.com> |
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| .. | ||
| AmdSvsmLibNull | ||
| BaseRiscV64CpuExceptionHandlerLib | ||
| BaseRiscV64CpuTimerLib | ||
| BaseRiscVMmuLib | ||
| BaseXApicLib | ||
| BaseXApicX2ApicLib | ||
| CcExitLibNull | ||
| CpuCacheInfoLib | ||
| CpuCommonFeaturesLib | ||
| CpuExceptionHandlerLib | ||
| CpuMmuLib | ||
| CpuPageTableLib | ||
| CpuTimerLib | ||
| MicrocodeLib | ||
| MmSaveStateLib | ||
| MmUnblockMemoryLib | ||
| MpInitLib | ||
| MpInitLibUp | ||
| MtrrLib | ||
| PlatformSecLibNull | ||
| RegisterCpuFeaturesLib | ||
| SecPeiDxeTimerLibUefiCpu | ||
| SmmCpuFeaturesLib | ||
| SmmCpuPlatformHookLibNull | ||
| SmmCpuRendezvousLib | ||
| SmmCpuSyncLib | ||
| SmmRelocationLib | ||