Thomas Lendacky
Fellow Software Engineer at AMD
Austin, Texas, United States
Summary
🤩
Rockstar🎓
Top SchoolThomas Lendacky is a Fellow Software Engineer with 12+ years (and a long IBM career preceding that) of deep systems and kernel expertise, currently advancing AMD's memory encryption technologies like SME, SEV and SEV-ES for EPYC and Ryzen processors from Austin. He combines low-level Linux kernel development, SoC bring-up and device driver engineering with security-focused firmware work—contributions include substantial changes to the Linux x86/sev subsystem and EDK II SEV-ES support. His background spans performance and security roles, giving him a rare blend of virtualization, networking driver and cryptographic offload experience. Thomas is an impactful open-source contributor to world-class projects such as torvalds/linux and tianocore/edk2, demonstrating both architectural thinking and hands-on implementation of hardware-backed security features.
12 years of coding experience
35 years of employment as a software developer
Bachelor of Science (BS) Computer Science, Bachelor of Science (BS) Computer Science at Rensselaer Polytechnic Institute
Github Skills (31)
virtualisation10
uefi10
kvm10
assembly10
qemu10
barrier10
firmware10
it-security10
memory-management10
memory-model10
virtual-machine10
c1110
linux-kernel10
networking10
x8610
Programming languages (6)
Github contributions (5)
tianocore/edk2
May 2020 - Dec 2022
EDK II
Role in this project:
Back-end & Security Engineer
Back-end & Security EngineerContributions:29 reviews, 91 commits, 91 PRs in 2 years 7 months
Contributions summary:Thomas's commits focus on enhancing the security features of the EDK2 firmware by integrating SEV-ES support. They implemented various functionalities related to Secure Encrypted Virtualization (SEV-ES) and Secure Encrypted Virtualization - Secure Nested Paging (SEV-SNP), including the addition of the GHCB structure, and associated initialization of the VmgExit library for handling Non-Automatic Events (NAEs). The user added code to support the processing of CPUID, RDPMC, WBINVD, MSR, RDTSC, and IOIO_PROT, among other events, ensuring proper communication with the hypervisor for secure operations. The user also updated the code base by adding memory encryption mask and validated the encryption bit.
uefipythonfirmwarec
torvalds/linux
Jan 2023 - Feb 2023
Linux kernel source tree
Role in this project:Back-end Developer & System Architect
Back-end Developer & System ArchitectContributions:8 commits in 1 month
Contributions summary:Thomas primarily contributed to the x86/sev subsystem of the Linux kernel, focusing on the implementation and enhancement of AMD's Secure Encrypted Virtualization (SEV) feature. Their work includes adding support for the RMPREAD instruction, optimizing the RMP table access, and refactoring code to accommodate segmented RMP tables. The user demonstrated a strong understanding of system architecture, hardware features, and kernel internals to improve the security and performance of the SEV implementation. Their contributions included substantial code changes and documentation updates, demonstrating a broad impact on the SEV's capabilities.
linux-kernel
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