tools: durable guest counter enumeration/injection and VA reader

The counter enumeration/injection workflow lived in the guest's /tmp and was
lost on every restart. Make it durable under tools/guest-diag:

- sem_counters.py: translate a process's per-channel u32 completion counters
  (16-byte stride in the /dev/nvidiactl counter page) to guest PAs through
  /proc/<pid>/pagemap; --pairs emits handle,va,pa triples.
- sem_slots.py: read/write the counter slots via /proc/<pid>/mem (fallback
  for the host counter publish).
- read_va.py: hex dump a process VA (UVM sysmem GPU VAs are usually valid
  CPU VAs in the owning process); --u32 for method streams.
- inject_counters.sh: host-side one-shot: push the tool, take the GR handles
  from the live chan_dump, enumerate, then register each counter with
  sema_counter and pin its VA with sema_map_add.
- push_guest_tools.sh: push the new tools after every VM start.
- launch_qemu_direct.sh: parameterized mdev UUID/paths instead of a stale
  hardcoded one; committed so it survives checkouts.

1 files changed, 4 insertions, 0 deletions

diff --git a/tools/guest-diag/push_guest_tools.sh b/tools/guest-diag/push_guest_tools.sh
index 607cce4..42b91ae 100755
--- a/tools/guest-diag/push_guest_tools.sh
+++ b/tools/guest-diag/push_guest_tools.sh
@@ -27,6 +27,10 @@ push_b64 "$REPO/tools/test/cuda_drv_test.c" /tmp/cdt.c
 push_b64 "$HERE/dumpctx.py"     /tmp/dumpctx.py
 push_b64 "$HERE/trkinfo.py"     /tmp/trkinfo.py
 push_b64 "$HERE/bp999.py"       /tmp/bp999.py
+push_b64 "$HERE/sem_counters.py" /tmp/sem_counters.py
+push_b64 "$HERE/sem_slots.py"   /tmp/sem_slots.py
+push_b64 "$HERE/read_va.py"     /tmp/read_va.py
+push_b64 "$HERE/guest_pmap.py"  /tmp/guest_pmap.py
 
 echo "[*] compiling in guest..."
 "$VMEXEC" exec "gcc -O1 -w -o /tmp/ptio /tmp/ptio.c && \