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* [PATCH v5 00/42] SEV-ES guest support
@ 2020-03-02 23:06 Lendacky, Thomas
  2020-03-02 23:06 ` [PATCH v5 01/42] MdePkg: Create PCDs to be used in support of SEV-ES Lendacky, Thomas
                   ` (41 more replies)
  0 siblings, 42 replies; 51+ messages in thread
From: Lendacky, Thomas @ 2020-03-02 23:06 UTC (permalink / raw)
  To: devel
  Cc: Jordan Justen, Laszlo Ersek, Ard Biesheuvel, Michael D Kinney,
	Liming Gao, Eric Dong, Ray Ni, Brijesh Singh, Benjamin You,
	Dandan Bi, Guo Dong, Hao A Wu, Jian J Wang, Maurice Ma

This patch series provides support for running EDK2/OVMF under SEV-ES.

Secure Encrypted Virtualization - Encrypted State (SEV-ES) expands on the
SEV support to protect the guest register state from the hypervisor. See
"AMD64 Architecture Programmer's Manual Volume 2: System Programming",
section "15.35 Encrypted State (SEV-ES)" [1].

In order to allow a hypervisor to perform functions on behalf of a guest,
there is architectural support for notifying a guest's operating system
when certain types of VMEXITs are about to occur. This allows the guest to
selectively share information with the hypervisor to satisfy the requested
function. The notification is performed using a new exception, the VMM
Communication exception (#VC). The information is shared through the
Guest-Hypervisor Communication Block (GHCB) using the VMGEXIT instruction.
The GHCB format and the protocol for using it is documented in "SEV-ES
Guest-Hypervisor Communication Block Standardization" [2].

The main areas of the EDK2 code that are updated to support SEV-ES are
around the exception handling support and the AP boot support.

Exception support is required starting in Sec, continuing through Pei
and into Dxe in order to handle #VC exceptions that are generated.  Each
AP requires it's own GHCB page as well as a page to hold values specific
to that AP.

AP booting poses some interesting challenges. The INIT-SIPI-SIPI sequence
is typically used to boot the APs. However, the hypervisor is not allowed
to update the guest registers. The GHCB document [2] talks about how SMP
booting under SEV-ES is performed.

Since the GHCB page must be a shared (unencrypted) page, the processor
must be running in long mode in order for the guest and hypervisor to
communicate with each other. As a result, SEV-ES is only supported under
the X64 architecture.

[1] https://www.amd.com/system/files/TechDocs/24593.pdf
[2] https://developer.amd.com/wp-content/resources/56421.pdf

---

These patches are based on commit:
4c0f6e349d32 ("UefiCpuPkg/MpInitLib: Skip reading PlatformId on AMD processors.")

Proper execution of SEV-ES relies on Bugzilla 2340 being fixed.

A version of the tree (with an extra patch to workaround Bugzilla 2340) can
be found at:
https://github.com/AMDESE/ovmf/tree/sev-es-v12

Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Benjamin You <benjamin.you@intel.com>
Cc: Dandan Bi <dandan.bi@intel.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Guo Dong <guo.dong@intel.com>
Cc: Hao A Wu <hao.a.wu@intel.com>
Cc: Jian J Wang <jian.j.wang@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Liming Gao <liming.gao@intel.com>
Cc: Maurice Ma <maurice.ma@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Cc: Ray Ni <ray.ni@intel.com>

Changes since v4:
- Move the SEV-ES protocol negotiation out of the SEC exception handler
  and into the SecMain.c file. As a result:
  - Move the SecGhcb related PCDs out of UefiCpuPkg and into OvmfPkg
  - Combine SecAMDSevVcHandler.c and PeiDxeAMDSevVcHandler.c into a
    single AMDSevVcHandler.c
- Consolidate VmgExitLib usage into common LibraryClasses sections
- Add documentation comments to the VmgExitLib functions

Changes since v3:
- Remove the need for the MP library finalization routine. The AP
  jump table address will be held by the hypervisor rather than
  communicated via the GHCB MSR. This removes some fragility around
  the UEFI to OS transition.
- Rename the SEV-ES RIP reset area to SEV-ES workarea and use it to
  communicate the SEV-ES status, so that SEC CPU exception handling is
  only established for an SEV-ES guest.
- Fix SMM build breakageAdd around QemuFlashPtrWrite().
- Fix SMM build breakage by adding VC exception support the SMM CPU
  exception handling.
- Add memory fencing around the invocation of AsmVmgExit().
- Clarify comments around the SEV-ES AP reset RIP values and usage.
- Move some PCD definitions from MdeModulePkg to UefiCpuPkg.
- Remove the 16-bit code selector definition from MdeModulePkg

Changes since v2:
- Added a way to locate the SEV-ES fixed AP RIP address for starting
  AP's to avoid updating the actual flash image (build time location
  that is identified with a GUID value).
- Create a VmgExit library to replace static inline functions.
- Move some PCDs to the appropriate packages
- Add support for writing to QEMU flash under SEV-ES
- Add additional MMIO opcode support
- Cleaned up the GHCB MSR CPUID protocol support

Changes since v1:
- Patches reworked to be more specific to the component/area being updated
  and order of definition/usage
- Created a library for VMGEXIT-related functions to replace use of inline
  functions
- Allocation method for GDT changed from AllocatePool to AllocatePages
- Early caching only enabled for SEV-ES guests
- Ensure AP loop mode set to halt loop mode for SEV-ES guests
- Reserved SEC GHCB-related memory areas when S3 is enabled

Tom Lendacky (42):
  MdePkg: Create PCDs to be used in support of SEV-ES
  MdePkg: Add the MSR definition for the GHCB register
  MdePkg: Add a structure definition for the GHCB
  MdeModulePkg/DxeIplPeim: Support GHCB pages when creating page tables
  MdePkg/BaseLib: Add support for the XGETBV instruction
  MdePkg/BaseLib: Add support for the VMGEXIT instruction
  UefiCpuPkg: Implement library support for VMGEXIT
  OvmfPkg: Prepare OvmfPkg to use the VmgExitLib library
  UefiPayloadPkg: Prepare UefiPayloadPkg to use the VmgExitLib library
  UefiCpuPkg/CpuExceptionHandler: Add base support for the #VC exception
  UefiCpuPkg/CpuExceptionHandler: Add support for IOIO_PROT NAE events
  UefiCpuPkg/CpuExceptionHandler: Support string IO for IOIO_PROT NAE
    events
  UefiCpuPkg/CpuExceptionHandler: Add support for CPUID NAE events
  UefiCpuPkg/CpuExceptionHandler: Add support for MSR_PROT NAE events
  UefiCpuPkg/CpuExceptionHandler: Add support for NPF NAE events (MMIO)
  UefiCpuPkg/CpuExceptionHandler: Add support for WBINVD NAE events
  UefiCpuPkg/CpuExceptionHandler: Add support for RDTSC NAE events
  UefiCpuPkg/CpuExceptionHandler: Add support for RDPMC NAE events
  UefiCpuPkg/CpuExceptionHandler: Add support for INVD NAE events
  UefiCpuPkg/CpuExceptionHandler: Add support for VMMCALL NAE events
  UefiCpuPkg/CpuExceptionHandler: Add support for RDTSCP NAE events
  UefiCpuPkg/CpuExceptionHandler: Add support for MONITOR/MONITORX NAE
    events
  UefiCpuPkg/CpuExceptionHandler: Add support for MWAIT/MWAITX NAE
    events
  UefiCpuPkg/CpuExceptionHandler: Add support for DR7 Read/Write NAE
    events
  OvmfPkg/MemEncryptSevLib: Add an SEV-ES guest indicator function
  OvmfPkg: Add support to perform SEV-ES initialization
  OvmfPkg: Create a GHCB page for use during Sec phase
  OvmfPkg/PlatformPei: Reserve GHCB-related areas if S3 is supported
  OvmfPkg: Create GHCB pages for use during Pei and Dxe phase
  OvmfPkg/PlatformPei: Move early GDT into ram when SEV-ES is enabled
  UefiCpuPkg: Create an SEV-ES workarea PCD
  OvmfPkg: Reserve a page in memory for the SEV-ES usage
  OvmfPkg/ResetVector: Add support for a 32-bit SEV check
  OvmfPkg/Sec: Add #VC exception handling for Sec phase
  OvmfPkg/Sec: Enable cache early to speed up booting
  OvmfPkg/QemuFlashFvbServicesRuntimeDxe: Bypass flash detection with
    SEV-ES is enabled
  UefiCpuPkg: Add a 16-bit protected mode code segment descriptor
  UefiCpuPkg/MpInitLib: Add CPU MP data flag to indicate if SEV-ES is
    enabled
  UefiCpuPkg: Allow AP booting under SEV-ES
  OvmfPkg: Use the SEV-ES work area for the SEV-ES AP reset vector
  OvmfPkg: Move the GHCB allocations into reserved memory
  UefiCpuPkg/MpInitLib: Prepare SEV-ES guest APs for OS use

 MdeModulePkg/MdeModulePkg.dec                 |    9 +
 OvmfPkg/OvmfPkg.dec                           |    9 +
 UefiCpuPkg/UefiCpuPkg.dec                     |   17 +
 OvmfPkg/OvmfPkgIa32.dsc                       |    7 +
 OvmfPkg/OvmfPkgIa32X64.dsc                    |    7 +
 OvmfPkg/OvmfPkgX64.dsc                        |    7 +
 OvmfPkg/OvmfXen.dsc                           |    1 +
 UefiCpuPkg/UefiCpuPkg.dsc                     |    2 +
 UefiPayloadPkg/UefiPayloadPkgIa32.dsc         |    2 +
 UefiPayloadPkg/UefiPayloadPkgIa32X64.dsc      |    2 +
 OvmfPkg/OvmfPkgX64.fdf                        |    9 +
 MdeModulePkg/Core/DxeIplPeim/DxeIpl.inf       |    2 +
 MdePkg/Library/BaseLib/BaseLib.inf            |    4 +
 OvmfPkg/PlatformPei/PlatformPei.inf           |    7 +
 .../FvbServicesRuntimeDxe.inf                 |    2 +
 OvmfPkg/ResetVector/ResetVector.inf           |    8 +
 OvmfPkg/Sec/SecMain.inf                       |    4 +
 .../DxeCpuExceptionHandlerLib.inf             |    5 +
 .../PeiCpuExceptionHandlerLib.inf             |    5 +
 .../SecPeiCpuExceptionHandlerLib.inf          |    5 +
 .../SmmCpuExceptionHandlerLib.inf             |    5 +
 UefiCpuPkg/Library/MpInitLib/DxeMpInitLib.inf |    4 +
 UefiCpuPkg/Library/MpInitLib/PeiMpInitLib.inf |    4 +
 UefiCpuPkg/Library/VmgExitLib/VmgExitLib.inf  |   33 +
 .../Core/DxeIplPeim/X64/VirtualMemory.h       |   12 +-
 MdePkg/Include/Library/BaseLib.h              |   31 +
 MdePkg/Include/Register/Amd/Fam17Msr.h        |   42 +
 MdePkg/Include/Register/Amd/Ghcb.h            |  136 ++
 OvmfPkg/Include/Library/MemEncryptSevLib.h    |   12 +
 .../QemuFlash.h                               |    6 +
 UefiCpuPkg/CpuDxe/CpuGdt.h                    |    4 +-
 UefiCpuPkg/Include/Library/VmgExitLib.h       |  111 ++
 .../CpuExceptionHandlerLib/AMDSevVcCommon.h   |   26 +
 .../CpuExceptionCommon.h                      |    2 +
 UefiCpuPkg/Library/MpInitLib/MpLib.h          |   68 +-
 .../Core/DxeIplPeim/Ia32/DxeLoadFunc.c        |    4 +-
 .../Core/DxeIplPeim/X64/DxeLoadFunc.c         |   11 +-
 .../Core/DxeIplPeim/X64/VirtualMemory.c       |   49 +-
 MdePkg/Library/BaseLib/Ia32/GccInline.c       |   45 +
 MdePkg/Library/BaseLib/X64/GccInline.c        |   47 +
 .../MemEncryptSevLibInternal.c                |   75 +-
 OvmfPkg/PlatformPei/AmdSev.c                  |   82 ++
 OvmfPkg/PlatformPei/MemDetect.c               |   23 +
 .../QemuFlash.c                               |   23 +-
 .../QemuFlashDxe.c                            |   15 +
 .../QemuFlashSmm.c                            |    9 +
 OvmfPkg/Sec/SecMain.c                         |  158 ++-
 UefiCpuPkg/CpuDxe/CpuGdt.c                    |    8 +-
 .../CpuExceptionHandlerLib/AMDSevVcHandler.c  |   29 +
 .../CpuExceptionCommon.c                      |    2 +-
 .../Ia32/ArchAMDSevVcHandler.c                |   24 +
 .../PeiDxeSmmCpuException.c                   |   16 +
 .../SecPeiCpuException.c                      |   16 +
 .../X64/ArchAMDSevVcHandler.c                 | 1237 +++++++++++++++++
 UefiCpuPkg/Library/MpInitLib/DxeMpLib.c       |  114 +-
 UefiCpuPkg/Library/MpInitLib/MpLib.c          |  257 +++-
 UefiCpuPkg/Library/MpInitLib/PeiMpLib.c       |   19 +
 UefiCpuPkg/Library/VmgExitLib/VmgExitLib.c    |  243 ++++
 UefiCpuPkg/PiSmmCpuDxeSmm/X64/SmmFuncsArch.c  |    2 +-
 MdePkg/Library/BaseLib/Ia32/VmgExit.nasm      |   37 +
 MdePkg/Library/BaseLib/Ia32/XGetBv.nasm       |   31 +
 MdePkg/Library/BaseLib/X64/VmgExit.nasm       |   32 +
 MdePkg/Library/BaseLib/X64/XGetBv.nasm        |   34 +
 OvmfPkg/ResetVector/Ia16/ResetVectorVtf0.asm  |  100 ++
 OvmfPkg/ResetVector/Ia32/PageTables64.asm     |  351 ++++-
 OvmfPkg/ResetVector/ResetVector.nasmb         |   20 +
 .../X64/ExceptionHandlerAsm.nasm              |   17 +
 UefiCpuPkg/Library/MpInitLib/Ia32/MpEqu.inc   |    2 +-
 .../Library/MpInitLib/Ia32/MpFuncs.nasm       |   15 +
 UefiCpuPkg/Library/MpInitLib/X64/MpEqu.inc    |    4 +-
 UefiCpuPkg/Library/MpInitLib/X64/MpFuncs.nasm |  370 ++++-
 UefiCpuPkg/Library/VmgExitLib/VmgExitLib.uni  |   15 +
 .../ResetVector/Vtf0/Ia16/Real16ToFlat32.asm  |    9 +
 73 files changed, 4056 insertions(+), 99 deletions(-)
 create mode 100644 UefiCpuPkg/Library/VmgExitLib/VmgExitLib.inf
 create mode 100644 MdePkg/Include/Register/Amd/Ghcb.h
 create mode 100644 UefiCpuPkg/Include/Library/VmgExitLib.h
 create mode 100644 UefiCpuPkg/Library/CpuExceptionHandlerLib/AMDSevVcCommon.h
 create mode 100644 UefiCpuPkg/Library/CpuExceptionHandlerLib/AMDSevVcHandler.c
 create mode 100644 UefiCpuPkg/Library/CpuExceptionHandlerLib/Ia32/ArchAMDSevVcHandler.c
 create mode 100644 UefiCpuPkg/Library/CpuExceptionHandlerLib/X64/ArchAMDSevVcHandler.c
 create mode 100644 UefiCpuPkg/Library/VmgExitLib/VmgExitLib.c
 create mode 100644 MdePkg/Library/BaseLib/Ia32/VmgExit.nasm
 create mode 100644 MdePkg/Library/BaseLib/Ia32/XGetBv.nasm
 create mode 100644 MdePkg/Library/BaseLib/X64/VmgExit.nasm
 create mode 100644 MdePkg/Library/BaseLib/X64/XGetBv.nasm
 create mode 100644 OvmfPkg/ResetVector/Ia16/ResetVectorVtf0.asm
 create mode 100644 UefiCpuPkg/Library/VmgExitLib/VmgExitLib.uni

-- 
2.17.1


^ permalink raw reply	[flat|nested] 51+ messages in thread

end of thread, other threads:[~2020-03-03 23:52 UTC | newest]

Thread overview: 51+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2020-03-02 23:06 [PATCH v5 00/42] SEV-ES guest support Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 01/42] MdePkg: Create PCDs to be used in support of SEV-ES Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 02/42] MdePkg: Add the MSR definition for the GHCB register Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 03/42] MdePkg: Add a structure definition for the GHCB Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 04/42] MdeModulePkg/DxeIplPeim: Support GHCB pages when creating page tables Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 05/42] MdePkg/BaseLib: Add support for the XGETBV instruction Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 06/42] MdePkg/BaseLib: Add support for the VMGEXIT instruction Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 07/42] UefiCpuPkg: Implement library support for VMGEXIT Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 08/42] OvmfPkg: Prepare OvmfPkg to use the VmgExitLib library Lendacky, Thomas
2020-03-03 12:10   ` [edk2-devel] " Laszlo Ersek
2020-03-02 23:06 ` [PATCH v5 09/42] UefiPayloadPkg: Prepare UefiPayloadPkg " Lendacky, Thomas
2020-03-03 23:52   ` [edk2-devel] " Guo Dong
2020-03-02 23:06 ` [PATCH v5 10/42] UefiCpuPkg/CpuExceptionHandler: Add base support for the #VC exception Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 11/42] UefiCpuPkg/CpuExceptionHandler: Add support for IOIO_PROT NAE events Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 12/42] UefiCpuPkg/CpuExceptionHandler: Support string IO " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 13/42] UefiCpuPkg/CpuExceptionHandler: Add support for CPUID " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 14/42] UefiCpuPkg/CpuExceptionHandler: Add support for MSR_PROT " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 15/42] UefiCpuPkg/CpuExceptionHandler: Add support for NPF NAE events (MMIO) Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 16/42] UefiCpuPkg/CpuExceptionHandler: Add support for WBINVD NAE events Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 17/42] UefiCpuPkg/CpuExceptionHandler: Add support for RDTSC " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 18/42] UefiCpuPkg/CpuExceptionHandler: Add support for RDPMC " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 19/42] UefiCpuPkg/CpuExceptionHandler: Add support for INVD " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 20/42] UefiCpuPkg/CpuExceptionHandler: Add support for VMMCALL " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 21/42] UefiCpuPkg/CpuExceptionHandler: Add support for RDTSCP " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 22/42] UefiCpuPkg/CpuExceptionHandler: Add support for MONITOR/MONITORX " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 23/42] UefiCpuPkg/CpuExceptionHandler: Add support for MWAIT/MWAITX " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 24/42] UefiCpuPkg/CpuExceptionHandler: Add support for DR7 Read/Write " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 25/42] OvmfPkg/MemEncryptSevLib: Add an SEV-ES guest indicator function Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 26/42] OvmfPkg: Add support to perform SEV-ES initialization Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 27/42] OvmfPkg: Create a GHCB page for use during Sec phase Lendacky, Thomas
2020-03-03  5:29   ` Lendacky, Thomas
2020-03-03  5:36   ` [PATCH v5.1 27/43] " Lendacky, Thomas
2020-03-02 23:06 ` [PATCH v5 28/42] OvmfPkg/PlatformPei: Reserve GHCB-related areas if S3 is supported Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 29/42] OvmfPkg: Create GHCB pages for use during Pei and Dxe phase Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 30/42] OvmfPkg/PlatformPei: Move early GDT into ram when SEV-ES is enabled Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 31/42] UefiCpuPkg: Create an SEV-ES workarea PCD Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 32/42] OvmfPkg: Reserve a page in memory for the SEV-ES usage Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 33/42] OvmfPkg/ResetVector: Add support for a 32-bit SEV check Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 34/42] OvmfPkg/Sec: Add #VC exception handling for Sec phase Lendacky, Thomas
2020-03-03 13:29   ` [edk2-devel] " Laszlo Ersek
2020-03-03 14:20     ` Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 35/42] OvmfPkg/Sec: Enable cache early to speed up booting Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 36/42] OvmfPkg/QemuFlashFvbServicesRuntimeDxe: Bypass flash detection with SEV-ES is enabled Lendacky, Thomas
2020-03-03 12:33   ` [edk2-devel] " Laszlo Ersek
2020-03-03 14:26     ` Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 37/42] UefiCpuPkg: Add a 16-bit protected mode code segment descriptor Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 38/42] UefiCpuPkg/MpInitLib: Add CPU MP data flag to indicate if SEV-ES is enabled Lendacky, Thomas
2020-03-02 23:07 ` [PATCH v5 39/42] UefiCpuPkg: Allow AP booting under SEV-ES Lendacky, Thomas
2020-03-03  5:43 ` [PATCH v5 40/42] OvmfPkg: Use the SEV-ES work area for the SEV-ES AP reset vector Lendacky, Thomas
2020-03-03  5:43 ` [PATCH v5 41/42] OvmfPkg: Move the GHCB allocations into reserved memory Lendacky, Thomas
2020-03-03  5:43 ` [PATCH v5 42/42] UefiCpuPkg/MpInitLib: Prepare SEV-ES guest APs for OS use Lendacky, Thomas

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