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-rw-r--r--tools/guest-diag/pin_gr_stream.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/tools/guest-diag/pin_gr_stream.py b/tools/guest-diag/pin_gr_stream.py
index 44f8681..643145b 100644
--- a/tools/guest-diag/pin_gr_stream.py
+++ b/tools/guest-diag/pin_gr_stream.py
@@ -22,7 +22,10 @@ PARAM = "/sys/module/open_iov_vfio/parameters"
GUEST_SCRIPT = os.path.join(HERE, "guest_pin_stream.py")
PORT = int(os.environ.get("PINWIN_PORT", "45678"))
-LO = os.environ.get("PINWIN_LO", "0x200400000")
+# 0x200000000 covers the GR GPFIFO rings/UVM channel mappings below the
+# old 0x200400000 start; without them the host learns bogus vidmem pairs
+# for the rings and never decodes GR pushes.
+LO = os.environ.get("PINWIN_LO", "0x200000000")
HI = os.environ.get("PINWIN_HI", "0x206000000")
PAMAX = os.environ.get("PINWIN_PA_MAX", "0x180000000")
SEMSTREAM = os.environ.get("SEM_STREAM_FILE", "/tmp/opencode/sem_stream.txt")