From: "Min Xu" <min.m.xu@intel.com>
To: devel@edk2.groups.io
Cc: Min Xu <min.m.xu@intel.com>,
Brijesh Singh <brijesh.singh@amd.com>,
Erdem Aktas <erdemaktas@google.com>,
James Bottomley <jejb@linux.ibm.com>,
Jiewen Yao <jiewen.yao@intel.com>,
Tom Lendacky <thomas.lendacky@amd.com>,
Eric Dong <eric.dong@intel.com>, Ray Ni <ray.ni@intel.com>,
Rahul Kumar <rahul1.kumar@intel.com>,
Gerd Hoffmann <kraxel@redhat.com>
Subject: [PATCH V4 04/31] UefiCpuPkg: Extend VmgExitLibNull to handle #VE exception
Date: Mon, 13 Dec 2021 20:56:35 +0800 [thread overview]
Message-ID: <5402bef35a54fed8eb4384195f0c4788c8c60240.1639399598.git.min.m.xu@intel.com> (raw)
In-Reply-To: <cover.1639399598.git.min.m.xu@intel.com>
RFC: https://bugzilla.tianocore.org/show_bug.cgi?id=3429
VmgExitLib performs the necessary processing to handle a #VC exception.
VmgExitLibNull is a NULL instance of VmgExitLib which provides a
default limited interface. In this commit VmgExitLibNull is extended to
handle a #VE exception with a default limited interface. A full feature
version of #VE handler will be created later.
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
---
UefiCpuPkg/Include/Library/VmgExitLib.h | 28 ++++++++++++++
.../Library/VmgExitLibNull/VmTdExitNull.c | 38 +++++++++++++++++++
.../Library/VmgExitLibNull/VmgExitLibNull.inf | 1 +
3 files changed, 67 insertions(+)
create mode 100644 UefiCpuPkg/Library/VmgExitLibNull/VmTdExitNull.c
diff --git a/UefiCpuPkg/Include/Library/VmgExitLib.h b/UefiCpuPkg/Include/Library/VmgExitLib.h
index ebda1c3d907c..f9f911099a7b 100644
--- a/UefiCpuPkg/Include/Library/VmgExitLib.h
+++ b/UefiCpuPkg/Include/Library/VmgExitLib.h
@@ -15,6 +15,8 @@
#include <Protocol/DebugSupport.h>
#include <Register/Amd/Ghcb.h>
+#define VE_EXCEPTION 20
+
/**
Perform VMGEXIT.
@@ -142,4 +144,30 @@ VmgExitHandleVc (
IN OUT EFI_SYSTEM_CONTEXT SystemContext
);
+/**
+ Handle a #VE exception.
+
+ Performs the necessary processing to handle a #VE exception.
+
+ The base library function returns an error equal to VE_EXCEPTION,
+ to be propagated to the standard exception handling stack.
+
+ @param[in, out] ExceptionType Pointer to an EFI_EXCEPTION_TYPE to be set
+ as value to use on error.
+ @param[in, out] SystemContext Pointer to EFI_SYSTEM_CONTEXT
+
+ @retval EFI_SUCCESS Exception handled
+ @retval EFI_UNSUPPORTED #VE not supported, (new) exception value to
+ propagate provided
+ @retval EFI_PROTOCOL_ERROR #VE handling failed, (new) exception value to
+ propagate provided
+
+**/
+EFI_STATUS
+EFIAPI
+VmTdExitHandleVe (
+ IN OUT EFI_EXCEPTION_TYPE *ExceptionType,
+ IN OUT EFI_SYSTEM_CONTEXT SystemContext
+ );
+
#endif
diff --git a/UefiCpuPkg/Library/VmgExitLibNull/VmTdExitNull.c b/UefiCpuPkg/Library/VmgExitLibNull/VmTdExitNull.c
new file mode 100644
index 000000000000..6a4e8087cb89
--- /dev/null
+++ b/UefiCpuPkg/Library/VmgExitLibNull/VmTdExitNull.c
@@ -0,0 +1,38 @@
+/** @file
+
+ Copyright (c) 2021, Intel Corporation. All rights reserved.<BR>
+
+ SPDX-License-Identifier: BSD-2-Clause-Patent
+
+**/
+#include <Base.h>
+#include <Uefi.h>
+#include <Library/VmgExitLib.h>
+
+/**
+ Handle a #VE exception.
+
+ Performs the necessary processing to handle a #VE exception.
+
+ @param[in, out] ExceptionType Pointer to an EFI_EXCEPTION_TYPE to be set
+ as value to use on error.
+ @param[in, out] SystemContext Pointer to EFI_SYSTEM_CONTEXT
+
+ @retval EFI_SUCCESS Exception handled
+ @retval EFI_UNSUPPORTED #VE not supported, (new) exception value to
+ propagate provided
+ @retval EFI_PROTOCOL_ERROR #VE handling failed, (new) exception value to
+ propagate provided
+
+**/
+EFI_STATUS
+EFIAPI
+VmTdExitHandleVe (
+ IN OUT EFI_EXCEPTION_TYPE *ExceptionType,
+ IN OUT EFI_SYSTEM_CONTEXT SystemContext
+ )
+{
+ *ExceptionType = VE_EXCEPTION;
+
+ return EFI_UNSUPPORTED;
+}
diff --git a/UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.inf b/UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.inf
index d8770a21c355..4aab601939ff 100644
--- a/UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.inf
+++ b/UefiCpuPkg/Library/VmgExitLibNull/VmgExitLibNull.inf
@@ -17,6 +17,7 @@
[Sources.common]
VmgExitLibNull.c
+ VmTdExitNull.c
[Packages]
MdePkg/MdePkg.dec
--
2.29.2.windows.2
next prev parent reply other threads:[~2021-12-13 12:57 UTC|newest]
Thread overview: 68+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-13 12:56 [PATCH V4 00/31] Enable Intel TDX in OvmfPkg (Config-A) Min Xu
2021-12-13 12:56 ` [PATCH V4 01/31] MdePkg: Add Tdx.h Min Xu
2021-12-13 12:56 ` [PATCH V4 02/31] MdePkg: Introduce basic Tdx functions in BaseLib Min Xu
2021-12-15 6:33 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 03/31] MdePkg: Add TdxLib to wrap Tdx operations Min Xu
2021-12-15 6:44 ` Gerd Hoffmann
2021-12-13 12:56 ` Min Xu [this message]
2021-12-13 12:56 ` [PATCH V4 05/31] OvmfPkg: Extend VmgExitLib to handle #VE exception Min Xu
2021-12-15 6:56 ` [edk2-devel] " Gerd Hoffmann
2022-01-20 6:34 ` Min Xu
2021-12-13 12:56 ` [PATCH V4 06/31] UefiCpuPkg/CpuExceptionHandler: Add base support for the " Min Xu
2021-12-13 12:56 ` [PATCH V4 07/31] MdePkg: Add helper functions for Tdx guest in BaseIoLibIntrinsic Min Xu
2021-12-13 12:56 ` [PATCH V4 08/31] MdePkg: Support mmio " Min Xu
2021-12-15 7:02 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 09/31] MdePkg: Support IoFifo " Min Xu
2021-12-15 7:18 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 10/31] MdePkg: Support IoRead/IoWrite " Min Xu
2021-12-15 7:18 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 11/31] UefiCpuPkg: Support TDX in BaseXApicX2ApicLib Min Xu
2021-12-13 12:56 ` [PATCH V4 12/31] MdePkg: Add macro to check SEV / TDX guest Min Xu
2021-12-13 12:56 ` [PATCH V4 13/31] UefiCpuPkg: Enable Tdx support in MpInitLib Min Xu
2021-12-15 7:33 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 14/31] OvmfPkg: Add IntelTdx.h in OvmfPkg/Include/IndustryStandard Min Xu
2021-12-15 7:37 ` Gerd Hoffmann
2021-12-16 6:43 ` Min Xu
2021-12-13 12:56 ` [PATCH V4 15/31] OvmfPkg: Add TdxMailboxLib Min Xu
2021-12-15 7:47 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 16/31] MdePkg: Add EFI_RESOURCE_ATTRIBUTE_ENCRYPTED in PiHob.h Min Xu
2021-12-13 12:56 ` [PATCH V4 17/31] OvmfPkg: Update Sec to support Tdx Min Xu
2021-12-15 8:18 ` Gerd Hoffmann
2021-12-16 8:11 ` [edk2-devel] " Min Xu
2021-12-13 12:56 ` [PATCH V4 18/31] OvmfPkg: Check Tdx in QemuFwCfgPei to avoid DMA operation Min Xu
2021-12-15 8:19 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 19/31] MdeModulePkg: EFER should not be changed in TDX Min Xu
2021-12-13 12:56 ` [PATCH V4 20/31] MdeModulePkg: Add PcdTdxSharedBitMask Min Xu
2021-12-15 8:22 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 21/31] UefiCpuPkg: Update AddressEncMask in CpuPageTable Min Xu
2021-12-15 8:38 ` Gerd Hoffmann
2021-12-16 8:23 ` Min Xu
2021-12-13 12:56 ` [PATCH V4 22/31] OvmfPkg: Update PlatformPei to support TDX Min Xu
2021-12-15 8:53 ` Gerd Hoffmann
2022-01-20 9:07 ` [edk2-devel] " Min Xu
2022-01-13 19:18 ` Vishal Annapurve
2022-01-14 2:23 ` Min Xu
2022-01-14 2:37 ` Vishal Annapurve
2022-01-14 2:40 ` Min Xu
2021-12-13 12:56 ` [PATCH V4 23/31] OvmfPkg: Update AcpiPlatformDxe to alter MADT table Min Xu
2021-12-15 8:54 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 24/31] OvmfPkg: Add TdxDxe driver Min Xu
2021-12-15 9:05 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 25/31] OvmfPkg/BaseMemEncryptTdxLib: Add TDX helper library Min Xu
2021-12-15 9:16 ` Gerd Hoffmann
2022-01-21 2:54 ` Min Xu
2022-01-21 8:04 ` Gerd Hoffmann
2022-01-21 8:31 ` [edk2-devel] " Min Xu
2021-12-13 12:56 ` [PATCH V4 26/31] OvmfPkg/QemuFwCfgLib: Support Tdx in QemuFwCfgDxe Min Xu
2021-12-15 9:16 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 27/31] OvmfPkg: Update IoMmuDxe to support TDX Min Xu
2021-12-15 9:18 ` Gerd Hoffmann
2021-12-13 12:56 ` [PATCH V4 28/31] OvmfPkg: Rename XenTimerDxe to LocalApicTimerDxe Min Xu
2021-12-15 9:19 ` Gerd Hoffmann
2021-12-13 12:57 ` [PATCH V4 29/31] UefiCpuPkg: Setting initial-count register as the last step Min Xu
2021-12-15 9:20 ` Gerd Hoffmann
2021-12-13 12:57 ` [PATCH V4 30/31] OvmfPkg: Switch timer in build time for OvmfPkg Min Xu
2021-12-15 9:21 ` Gerd Hoffmann
2021-12-13 12:57 ` [PATCH V4 31/31] OvmfPkg: Move LocalApicTimerDxe to UefiCpuPkg Min Xu
2021-12-15 9:26 ` Gerd Hoffmann
2021-12-16 8:29 ` [edk2-devel] " Min Xu
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