mirror of https://github.com/acidanthera/audk.git
509f8425b7
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> |
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|---|---|---|
| .. | ||
| Application/Cpuid | ||
| CpuDxe | ||
| CpuIo2Dxe | ||
| CpuIo2Smm | ||
| CpuIoPei | ||
| CpuMpPei | ||
| CpuS3DataDxe | ||
| Include | ||
| Library | ||
| PiSmmCommunication | ||
| PiSmmCpuDxeSmm | ||
| ResetVector | ||
| SecCore | ||
| Universal/Acpi/S3Resume2Pei | ||
| Contributions.txt | ||
| License.txt | ||
| UefiCpuPkg.dec | ||
| UefiCpuPkg.dsc | ||
| UefiCpuPkg.uni | ||
| UefiCpuPkgExtra.uni | ||