From: Xiang Chen <chenxiang66@hisilicon.com>
It uses [offset, offset + size - 1] to indicate that the length of range is
size in most places in vfio trace code (such as
trace_vfio_region_region_mmap()) execpt trace_vfio_region_sparse_mmap_entry().
So change it for trace_vfio_region_sparse_mmap_entry(), but if size is zero,
the trace will be weird with an underflow, so move the trace and trace it
only if size is not zero.
Signed-off-by: Xiang Chen <chenxiang66@hisilicon.com>
---
hw/vfio/common.c | 7 +++----
1 file changed, 3 insertions(+), 4 deletions(-)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 080046e3f5..345ea7bd8a 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -1544,11 +1544,10 @@ static int vfio_setup_region_sparse_mmaps(VFIORegion *region,
region->mmaps = g_new0(VFIOMmap, sparse->nr_areas);
for (i = 0, j = 0; i < sparse->nr_areas; i++) {
- trace_vfio_region_sparse_mmap_entry(i, sparse->areas[i].offset,
- sparse->areas[i].offset +
- sparse->areas[i].size);
-
if (sparse->areas[i].size) {
+ trace_vfio_region_sparse_mmap_entry(i, sparse->areas[i].offset,
+ sparse->areas[i].offset +
+ sparse->areas[i].size - 1);
region->mmaps[j].offset = sparse->areas[i].offset;
region->mmaps[j].size = sparse->areas[i].size;
j++;
--
2.33.0