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| author | Min Xu <min.m.xu@intel.com> | 2022-04-19 08:26:28 +0800 |
|---|---|---|
| committer | mergify[bot] <37929162+mergify[bot]@users.noreply.github.com> | 2022-04-19 01:26:08 +0000 |
| commit | 76fda1def3d1baea3b01ae697687ff478d2d1b42 (patch) | |
| tree | ae75969f40f630dc5362f9f92a332afbfff6833d /OvmfPkg/IntelTdx/Sec | |
| parent | 7012cb73c473521e4fe4c997bfbfdfca0bd4b90c (diff) | |
| download | edk2-76fda1def3d1baea3b01ae697687ff478d2d1b42.tar.gz edk2-76fda1def3d1baea3b01ae697687ff478d2d1b42.tar.bz2 edk2-76fda1def3d1baea3b01ae697687ff478d2d1b42.zip | |
OvmfPkg: Call CcProbe in SecMain.c instead of TsIsEnabled
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3902
TdIsEnabled() uses the CPUID instruction. At this point, exception
handling is not established and a CPUID instruction will generate
a #VC and cause the booting guest to crash.
CcProbe() checks Ovmf work area to return the guest type. So call
of CcProbe() instead of TdIsEnabled() to fix the above issue.
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Erdem Aktas <erdemaktas@google.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Min Xu <min.m.xu@intel.com>
Diffstat (limited to 'OvmfPkg/IntelTdx/Sec')
| -rw-r--r-- | OvmfPkg/IntelTdx/Sec/SecMain.c | 6 | ||||
| -rw-r--r-- | OvmfPkg/IntelTdx/Sec/SecMain.inf | 1 |
2 files changed, 4 insertions, 3 deletions
diff --git a/OvmfPkg/IntelTdx/Sec/SecMain.c b/OvmfPkg/IntelTdx/Sec/SecMain.c index 26d56be335..ab01ec9ab1 100644 --- a/OvmfPkg/IntelTdx/Sec/SecMain.c +++ b/OvmfPkg/IntelTdx/Sec/SecMain.c @@ -25,7 +25,7 @@ #include <Library/CpuExceptionHandlerLib.h>
#include <IndustryStandard/Tdx.h>
#include <Library/PlatformInitLib.h>
-
+#include <Library/CcProbeLib.h>
#include <Library/PeilessStartupLib.h>
#define SEC_IDT_ENTRY_COUNT 34
@@ -61,7 +61,7 @@ SecCoreStartupWithStack ( UINT32 Index;
volatile UINT8 *Table;
- if (TdIsEnabled ()) {
+ if (CcProbe () == CcGuestTypeIntelTdx) {
//
// For Td guests, the memory map info is in TdHobLib. It should be processed
// first so that the memory is accepted. Otherwise access to the unaccepted
@@ -119,7 +119,7 @@ SecCoreStartupWithStack ( //
AsmWriteIdtr (&IdtDescriptor);
- if (TdIsEnabled ()) {
+ if (CcProbe () == CcGuestTypeIntelTdx) {
//
// InitializeCpuExceptionHandlers () should be called in Td guests so that
// #VE exceptions can be handled correctly.
diff --git a/OvmfPkg/IntelTdx/Sec/SecMain.inf b/OvmfPkg/IntelTdx/Sec/SecMain.inf index df2e749c35..9cf1249d02 100644 --- a/OvmfPkg/IntelTdx/Sec/SecMain.inf +++ b/OvmfPkg/IntelTdx/Sec/SecMain.inf @@ -49,6 +49,7 @@ CpuExceptionHandlerLib
PeilessStartupLib
PlatformInitLib
+ CcProbeLib
[Pcd]
gUefiOvmfPkgTokenSpaceGuid.PcdOvmfSecPageTablesBase
|