Paul Meyer
a78afc1616
Wire up --coco=tdx alongside the existing SEV-SNP path. TDX requires KVM on x86_64, a raw TDVF firmware loaded via -bios (no pflash/NVRAM split), kernel-irqchip=split, and the "host" CPU model since QEMU rejects named models. Sets up the tdx-guest object and confidential-guest-support=tdx0. TDX measurement is different from QEMU's kernel-hashes injection: TDX provides runtime measurements via RTMRs, so the initial measurement only covers the firmware, which then measures the rest of the boot chain into those RTMRs (done by OVMF today). Therefore a restriction to direct kernel boot isn't required either. Signed-off-by: Paul Meyer <katexochen0@gmail.com>
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