Laszlo Ersek 509f8425b7 UefiCpuPkg: change PcdCpuSmmStackGuard default to TRUE ...

This Feature PCD causes PiSmmCpuDxe to catch SMM stack overflow at
runtime, logging a clear error message, and entering a CPU dead loop.
Compared to the chaotic and catastrophic consequences of the stack leaking
into, and corrupting, the SMM page table, a stack guard that is enabled by
default is vastly superior.

We should not require sane platforms to explicitly opt in to this
safeguard; instead, we should require platforms that prefer to live
dangerously to opt out of it.

Stack overflow in SMM might even give rise to security vulnerabilities.

Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Jiewen Yao <jiewen.yao@intel.com>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: Michael D Kinney <michael.d.kinney@intel.com>
Ref: http://thread.gmane.org/gmane.comp.bios.edk2.devel/12864
Ref: https://bugzilla.redhat.com/show_bug.cgi?id=1341733
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Laszlo Ersek <lersek@redhat.com>
Reviewed-by: Jiewen Yao <jiewen.yao@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

2016-06-06 10:58:24 +02:00

..

Application/Cpuid

UefiCpuPkg/Cpuid.h: Display Intel SGX Resource Enumeration Leaves

2016-03-30 08:29:56 +08:00

CpuDxe

UefiCpuPkg: Convert all .uni files to utf-8

2015-12-15 04:59:14 +00:00

CpuIo2Dxe

UefiCpuPkg: CpuIo2Dxe: optimize FIFO reads and writes of IO ports

2016-04-11 14:11:07 +02:00

CpuIo2Smm

UefiCpuPkg: Convert all .uni files to utf-8

2015-12-15 04:59:14 +00:00

CpuIoPei

UefiCpuPkg: Convert all .uni files to utf-8

2015-12-15 04:59:14 +00:00

CpuMpPei

UefiCpuPkg/CpuMpPei: Consume CpuExceptionHandlerLib

2016-06-01 15:37:01 +08:00

CpuS3DataDxe

UefiCpuPkg: Add the missing module uni for CpuS3DataDxe

2015-12-24 02:30:43 +00:00

Include

UefiCpuPkg/Cpuid.h: Add CPUID defines and structures for Intel SGX

2016-03-30 08:29:49 +08:00

Library

UefiCpuPkg/ExceptionLib: Import PeiCpuExceptionHandlerLib module

2016-06-01 15:36:14 +08:00

PiSmmCommunication

UefiCpuPkg: Convert all .uni files to utf-8

2015-12-15 04:59:14 +00:00

PiSmmCpuDxeSmm

UefiCpuPkg/PiSmmCpuDxeSmm: Using MSRs semaphores in aligned buffer

2016-05-24 15:20:22 -07:00

ResetVector

UefiCpuPkg: Convert all .uni files to utf-8

2015-12-15 04:59:14 +00:00

SecCore

UefiCpuPkg: Convert all .uni files to utf-8

2015-12-15 04:59:14 +00:00

Universal/Acpi/S3Resume2Pei

UefiCpuPkg: Convert all .uni files to utf-8

2015-12-15 04:59:14 +00:00

Contributions.txt

*/Contributions.txt: Update example email address

2015-02-03 17:29:14 +00:00

License.txt

Update copyright format

2012-04-24 06:49:39 +00:00

UefiCpuPkg.dec

UefiCpuPkg: change PcdCpuSmmStackGuard default to TRUE

2016-06-06 10:58:24 +02:00

UefiCpuPkg.dsc

UefiCpuPkg/ExceptionLib: Import PeiCpuExceptionHandlerLib module

2016-06-01 15:36:14 +08:00

UefiCpuPkg.uni

UefiCpuPkg: Add PCD PcdCpuApTargetCstate

2015-12-18 03:23:53 +00:00

UefiCpuPkgExtra.uni

UefiCpuPkg: Convert all .uni files to utf-8

2015-12-15 04:59:14 +00:00