[Qemu-devel] [PATCH] memory: fix 128 arithmetic in info mtree

[Alexey Kardashevskiy <aik@ozlabs.ru>]

mtree_print_mr() calls int128_get64() in 3 places but only 2 places
handle 2^64 correctly.

This fixes the third call of int128_get64().

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
---
 memory.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/memory.c b/memory.c
index ffedde7..93f2995 100644
--- a/memory.c
+++ b/memory.c
@@ -1816,7 +1816,9 @@ static void mtree_print_mr(fprintf_function mon_printf, void *f,
                    mr->alias->name,
                    mr->alias_offset,
                    mr->alias_offset
-                   + (hwaddr)int128_get64(mr->size) - 1);
+                   + (int128_nz(mr->size) ?
+                      (hwaddr)int128_get64(int128_sub(mr->size,
+                                                      int128_one())) : 0));
     } else {
         mon_printf(f,
                    TARGET_FMT_plx "-" TARGET_FMT_plx " (prio %d, %c%c): %s\n",
-- 
1.8.4.rc4