[Fix] Assert the page-aligned SWA evict floor at PD decode prealloc (#35286)

2026-08-18 13:32:16 -07:00
parent 955704544c
commit aa82229173
1 changed files with 3 additions and 1 deletions
@@ -1694,7 +1694,9 @@ def alloc_for_decode_prealloc_hisparse(
            extend_num_tokens=fill_len,
            swa_tail_len=swa_tail_len,
        )
-        req.kv.swa_evicted_seqlen = fill_len - swa_tail_len
+        swa_evicted_seqlen = fill_len - swa_tail_len
+        assert swa_evicted_seqlen >= 0 and swa_evicted_seqlen % allocator.page_size == 0
+        req.kv.swa_evicted_seqlen = swa_evicted_seqlen
    else:
        kv_loc = allocator.alloc_logical_only(
            prefix_lens=prefix_lens,