Update documentation

Signed-off-by: Maciej Dudek <[email protected]>
antmicro · Oct 13, 2023 · f8dd81f · f8dd81f
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diff --git a/docs/source/usage.md b/docs/source/usage.md
@@ -128,8 +128,10 @@ Different attack and row selection modes can be used, but only one of them can b
 
 - `--hammer-only`
 
-  Only hammers a pair of rows, without doing any error checks or reports.
-  If command is combined with `--payload-executor`, then any number of rows can be provided.
+  Only hammers rows, without doing any error checks or reports.
+  When run with `rowhammer.py` the attack is limited to one row pair.
+  `hw_rowhammer.py` can attack up to 32 rows.
+  With `--payload-executor` enabled the row limit is dictated by the payload memory size.
 
   For example following command will hammer rows 4 and 6 1000 times total (so 500 times each):
 

diff --git a/rowhammer_tester/scripts/hw_rowhammer.py b/rowhammer_tester/scripts/hw_rowhammer.py
@@ -18,6 +18,7 @@
 class HwRowHammer(RowHammer):
 
     def attack(self, row_tuple, read_count, progress_header=''):
+        assert len(row_tuple) <= 32
         addresses = [
             self.converter.encode_dma(bank=self.bank, col=self.column, row=r) for r in row_tuple
         ]