sravan/system76-edk2
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

UefiCpuPkg/MpInitLib: Use SEV-SNP AP Creation NAE event to launch APs

Browse Source 
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3275

Use the SEV-SNP AP Creation NAE event to create and launch APs under
SEV-SNP. This capability will be advertised in the SEV Hypervisor
Feature Support PCD (PcdSevEsHypervisorFeatures).

Cc: Michael Roth <michael.roth@amd.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Min Xu <min.m.xu@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Ray Ni <ray.ni@intel.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
This commit is contained in:
Tom Lendacky
2021-12-09 11:28:00 +08:00
committed by mergify[bot]
parent 67484aed69
commit 06544455d0
7 changed files with 433 additions and 22 deletions
Download Patch File Download Diff File Expand all files Collapse all files

44
UefiCpuPkg/Library/MpInitLib/MpLib.h
View File

@@ -15,6 +15,7 @@
#include <Register/Intel/Cpuid.h>
#include <Register/Amd/Cpuid.h>
#include <Register/Amd/Ghcb.h>
#include <Register/Intel/Msr.h>
#include <Register/Intel/LocalApic.h>
#include <Register/Intel/Microcode.h>
@@ -150,6 +151,7 @@ typedef struct {
UINT8 PlatformId;
UINT64 MicrocodeEntryAddr;
UINT32 MicrocodeRevision;
SEV_ES_SAVE_AREA *SevEsSaveArea;
} CPU_AP_DATA;
//
@@ -294,6 +296,7 @@ struct _CPU_MP_DATA {
BOOLEAN SevEsIsEnabled;
BOOLEAN SevSnpIsEnabled;
BOOLEAN UseSevEsAPMethod;
UINTN SevEsAPBuffer;
UINTN SevEsAPResetStackStart;
CPU_MP_DATA *NewCpuMpData;
@@ -799,4 +802,45 @@ FillExchangeInfoDataSevEs (
IN volatile MP_CPU_EXCHANGE_INFO *ExchangeInfo
);
/**
Issue RMPADJUST to adjust the VMSA attribute of an SEV-SNP page.
@param[in] PageAddress
@param[in] VmsaPage
@return RMPADJUST return value
**/
UINT32
SevSnpRmpAdjust (
IN EFI_PHYSICAL_ADDRESS PageAddress,
IN BOOLEAN VmsaPage
);
/**
Create an SEV-SNP AP save area (VMSA) for use in running the vCPU.
@param[in] CpuMpData Pointer to CPU MP Data
@param[in] CpuData Pointer to CPU AP Data
@param[in] ApicId APIC ID of the vCPU
**/
VOID
SevSnpCreateSaveArea (
IN CPU_MP_DATA *CpuMpData,
IN CPU_AP_DATA *CpuData,
UINT32 ApicId
);
/**
Create SEV-SNP APs.
@param[in] CpuMpData Pointer to CPU MP Data
@param[in] ProcessorNumber The handle number of specified processor
(-1 for all APs)
**/
VOID
SevSnpCreateAP (
IN CPU_MP_DATA *CpuMpData,
IN INTN ProcessorNumber
);
#endif