From: "Lendacky, Thomas" <thomas.lendacky@amd.com>
To: devel@edk2.groups.io
Cc: Brijesh Singh <brijesh.singh@amd.com>,
Eric Dong <eric.dong@intel.com>, Ray Ni <ray.ni@intel.com>,
Laszlo Ersek <lersek@redhat.com>,
Rahul Kumar <rahul1.kumar@intel.com>
Subject: [PATCH v2 11/11] UefiCpuPkg/MpInitLib: For SEV-ES guest, set stack based on processor number
Date: Fri, 16 Oct 2020 11:09:17 -0500 [thread overview]
Message-ID: <3a53fda34f0c765e1f28ba26ac2cb6fa1db29345.1602864557.git.thomas.lendacky@amd.com> (raw)
In-Reply-To: <cover.1602864557.git.thomas.lendacky@amd.com>
From: Tom Lendacky <thomas.lendacky@amd.com>
BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=3008
Set the SEV-ES reset stack address for an AP based on the processor number
instead of the APIC ID in case the APIC IDs are not zero-based and densely
packed/enumerated. This will ensure an AP reset stack address does not get
set outside of the AP reset stack memory allocation.
Cc: Eric Dong <eric.dong@intel.com>
Cc: Ray Ni <ray.ni@intel.com>
Cc: Laszlo Ersek <lersek@redhat.com>
Cc: Rahul Kumar <rahul1.kumar@intel.com>
Acked-by: Ray Ni <ray.ni@intel.com>
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
---
UefiCpuPkg/Library/MpInitLib/MpLib.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/UefiCpuPkg/Library/MpInitLib/MpLib.c b/UefiCpuPkg/Library/MpInitLib/MpLib.c
index 4f4b26a7c196..c9bb1d25c616 100644
--- a/UefiCpuPkg/Library/MpInitLib/MpLib.c
+++ b/UefiCpuPkg/Library/MpInitLib/MpLib.c
@@ -680,11 +680,16 @@ MpInitLibSevEsAPReset (
IN CPU_MP_DATA *CpuMpData
)
{
+ EFI_STATUS Status;
+ UINTN ProcessorNumber;
UINT16 Code16, Code32;
AP_RESET *APResetFn;
UINTN BufferStart;
UINTN StackStart;
+ Status = GetProcessorNumber (CpuMpData, &ProcessorNumber);
+ ASSERT_EFI_ERROR (Status);
+
Code16 = GetProtectedMode16CS ();
Code32 = GetProtectedMode32CS ();
@@ -696,7 +701,7 @@ MpInitLibSevEsAPReset (
BufferStart = CpuMpData->MpCpuExchangeInfo->BufferStart;
StackStart = CpuMpData->SevEsAPResetStackStart -
- (AP_RESET_STACK_SIZE * GetApicId ());
+ (AP_RESET_STACK_SIZE * ProcessorNumber);
//
// This call never returns.
--
2.28.0
prev parent reply other threads:[~2020-10-16 16:10 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-16 16:09 [PATCH v2 00/11] SEV-ES guest support fixes and cleanup Lendacky, Thomas
2020-10-16 16:09 ` [PATCH v2 01/11] MdePkg, OvmfPkg: Clean up GHCB field offsets and save area Lendacky, Thomas
2020-10-19 1:41 ` 回复: " gaoliming
2020-10-19 12:50 ` Lendacky, Thomas
2020-10-19 20:17 ` Laszlo Ersek
2020-10-19 20:48 ` Lendacky, Thomas
2020-10-19 20:42 ` Laszlo Ersek
2020-10-20 1:08 ` 回复: " gaoliming
2020-10-20 8:31 ` Laszlo Ersek
2020-10-20 13:10 ` Lendacky, Thomas
2020-10-21 0:54 ` 回复: " gaoliming
2020-10-21 21:54 ` Lendacky, Thomas
2020-10-22 1:25 ` 回复: [edk2-devel] " gaoliming
2020-10-22 13:12 ` Laszlo Ersek
2020-10-23 2:57 ` 回复: " gaoliming
2020-10-26 16:34 ` Lendacky, Thomas
2020-10-27 7:57 ` Dong, Eric
2020-10-28 17:42 ` Lendacky, Thomas
2020-10-21 12:29 ` Laszlo Ersek
2020-10-16 16:09 ` [PATCH v2 02/11] UefiCpuPkg/VmgExitLib: Add interfaces to set/read GHCB ValidBitmap bits Lendacky, Thomas
2020-10-19 20:46 ` [edk2-devel] " Laszlo Ersek
2020-10-16 16:09 ` [PATCH v2 03/11] OvmfPkg/VmgExitLib: Implement new VmgExitLib interfaces Lendacky, Thomas
2020-10-19 20:51 ` [edk2-devel] " Laszlo Ersek
2020-10-16 16:09 ` [PATCH v2 04/11] OvmfPkg/VmgExitLib: Set the SW exit fields when performing VMGEXIT Lendacky, Thomas
2020-10-19 20:53 ` [edk2-devel] " Laszlo Ersek
2020-10-16 16:09 ` [PATCH v2 05/11] OvmfPkg/VmgExitLib: Set the SwScratch valid bit for IOIO events Lendacky, Thomas
2020-10-19 20:54 ` [edk2-devel] " Laszlo Ersek
2020-10-16 16:09 ` [PATCH v2 06/11] OvmfPkg/VmgExitLib: Set the SwScratch valid bit for MMIO events Lendacky, Thomas
2020-10-16 16:09 ` [PATCH v2 07/11] UefiCpuPkg/MpInitLib: Set the SW exit fields when performing VMGEXIT Lendacky, Thomas
2020-10-16 16:09 ` [PATCH v2 08/11] OvmfPkg/QemuFlashFvbServicesRuntimeDxe: Set the SwScratch valid bit Lendacky, Thomas
2020-10-19 20:57 ` [edk2-devel] " Laszlo Ersek
2020-10-16 16:09 ` [PATCH v2 09/11] OvmfPkg/QemuFlashFvbServicesRuntimeDxe: Fix erase blocks for SEV-ES Lendacky, Thomas
2020-10-16 16:09 ` [PATCH v2 10/11] UefiCpuPkg, OvmfPkg: Disable interrupts when using the GHCB Lendacky, Thomas
2020-10-19 21:07 ` [edk2-devel] " Laszlo Ersek
2020-10-16 16:09 ` Lendacky, Thomas [this message]
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