On a Wednesday in 2022, Daniel P. Berrangé wrote:
In general we expect to be able to construct a SEV-ES VMSA blob from knowledge about the AMD achitectural CPU register defaults, KVM setup and QEMU setup. If any of this unexpectedly changes, figuring out what's wrong could be horrible. This systemtap script demonstrates how to capture the real VMSA that is used for a SEV-ES as it is booted. The captured data can be fed into the 'sevctl vmsa show' command in order to produce formatted info with named registers, allowing a 'diff' to be performed. This script will need updating for any kernel version that is not 6.0, to set the correct line numbers. Signed-off-by: Daniel P. Berrangé <berrange@xxxxxxxxxx> --- examples/systemtap/amd-sev-es-vmsa.stp | 48 ++++++++++++++++++++++++++ 1 file changed, 48 insertions(+) create mode 100644 examples/systemtap/amd-sev-es-vmsa.stp
Reviewed-by: Ján Tomko <jtomko@xxxxxxxxxx> Jano
