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9d9350a579
This allows the PEI core to report the maximum temporary SEC/PEI stack usage on the DEBUG_INFO level, in the PeiCheckAndSwitchStack() function [MdeModulePkg/Core/Pei/Dispatcher/Dispatcher.c]: * Normal boot: > Temp Stack : BaseAddress=0x814000 Length=0x4000 > Temp Heap : BaseAddress=0x810000 Length=0x4000 > Total temporary memory: 32768 bytes. > temporary memory stack ever used: 3664 bytes. <---- > temporary memory heap used for HobList: 5904 bytes. > temporary memory heap occupied by memory pages: 0 bytes. * S3 resume (with PEI decompression / SMM): > Temp Stack : BaseAddress=0x814000 Length=0x4000 > Temp Heap : BaseAddress=0x810000 Length=0x4000 > Total temporary memory: 32768 bytes. > temporary memory stack ever used: 3428 bytes. <---- > temporary memory heap used for HobList: 4816 bytes. > temporary memory heap occupied by memory pages: 0 bytes. I unit-tested this change by transitorily adding an infinite loop right after the "rep stosd", and dumping the guest's temp SEC/PEI RAM (32KB currently) while the guest was stuck in the loop. The dump includes one dword from before and after the temp SEC/PEI RAM: > $ virsh qemu-monitor-command GUEST_NAME --hmp 'xp /8194wx 0x80FFFC' > > 000000000080fffc: 0x00000000 0x5aa55aa5 0x5aa55aa5 0x5aa55aa5 > 000000000081000c: 0x5aa55aa5 0x5aa55aa5 0x5aa55aa5 0x5aa55aa5 > ... > 0000000000817fec: 0x5aa55aa5 0x5aa55aa5 0x5aa55aa5 0x5aa55aa5 > 0000000000817ffc: 0x5aa55aa5 0x00000000 Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org> Cc: Jordan Justen <jordan.l.justen@intel.com> Ref: https://bugzilla.tianocore.org/show_bug.cgi?id=747 Contributed-under: TianoCore Contribution Agreement 1.1 Signed-off-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
EDK II Project
A modern, feature-rich, cross-platform firmware development environment for the UEFI and PI specifications from www.uefi.org.
Contributions to the EDK II open source project are covered by the TianoCore Contribution Agreement 1.1
The majority of the content in the EDK II open source project uses a BSD 2-Clause License. The EDK II open source project contains the following components that are covered by additional licenses:
- AppPkg/Applications/Python/Python-2.7.2/Tools/pybench
- AppPkg/Applications/Python/Python-2.7.2
- AppPkg/Applications/Python/Python-2.7.10
- BaseTools/Source/C/BrotliCompress
- MdeModulePkg/Library/BrotliCustomDecompressLib
- OvmfPkg
- CryptoPkg/Library/OpensslLib/openssl
The EDK II Project is composed of packages. The maintainers for each package are listed in Maintainers.txt.