Ruben Hakobyan 9f1247fe60 devices: fw_cfg: Don't modify kernel header for KVM SEV-SNP guests ...

For KVM SEV-SNP guests, the VMM should not modify the kernel
boot header before sending it via fw_cfg. The guest firmware is expected
to set fields like type_of_loader itself.

For upcoming measured boot logic for SEV-SNP, modifying `type_of_loader`
causes the kernel hash computed by the VMM to diverge from the hash that
`sev-snp-measure` (and the guest firmware) compute, resulting in a
launch measurement mismatch.

This matches QEMU's behavior, which skips kernel header modifications
for confidential guests so the data sent via fw_cfg matches the
original kernel file provided by the user.

Signed-off-by: Ruben Hakobyan <hruben@meta.com>

2026-05-01 20:28:55 +00:00

..

src

devices: fw_cfg: Don't modify kernel header for KVM SEV-SNP guests

2026-05-01 20:28:55 +00:00

build.rs

build: Add "fuzzing" as a valid cfg(..) attribute

2024-05-08 08:10:28 +00:00

Cargo.toml

vmm: memory_manager: Add SEEK_DATA-based extent iterator

2026-05-01 15:40:50 +00:00