examples: systemtap: Warn users to properly update 'amd-sev-es-vmsa.stp'

The script references a very specific line in the kernel source code and
a very specific struct. Further changes to the kernel are likely going
to break it. Set the expectations by adding a warning to the reader.

Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>

diff --git a/examples/systemtap/amd-sev-es-vmsa.stp b/examples/systemtap/amd-sev-es-vmsa.stp
index 551ed739b7644087b0c452f0677326e444baccf4..7bd079be71f5c539aa3935ca7ed7ba025c95f380 100644 (file)
--- a/examples/systemtap/amd-sev-es-vmsa.stp
+++ b/examples/systemtap/amd-sev-es-vmsa.stp
@@ -19,6 +19,10 @@
 # A script that captures the VMSA blob for the boot vCPU and
 # first additional vCPU, when a KVM guest is booted with SEV-ES
 #
+# NOTE: This directly references specific structures and places in the
+#       kernel source code. It is expected that this example will need to be
+#       editted to match the kernel you intend to run it against.
+#
 # The captured VMSA will be printed to the console in hex format,
 # and can be converted to the required binary format by feeding
 # it through