util/vfio-helpers: Trace where BARs are mapped

For debugging purpose, trace where a BAR is mapped.

Reviewed-by: Fam Zheng <fam@euphon.net>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20201103020733.2303148-5-philmd@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>

diff --git a/util/trace-events b/util/trace-events
index 0753e4a0ed1454137d57af2ce5fa550bda879d4b..52d43cda3f36dc81ea92faa38934626ec9ed5176 100644 (file)
--- a/util/trace-events
+++ b/util/trace-events
@@ -88,3 +88,4 @@ qemu_vfio_dma_unmap(void *s, void *host) "s %p host %p"
 qemu_vfio_pci_read_config(void *buf, int ofs, int size, uint64_t region_ofs, uint64_t region_size) "read cfg ptr %p ofs 0x%x size 0x%x (region addr 0x%"PRIx64" size 0x%"PRIx64")"
 qemu_vfio_pci_write_config(void *buf, int ofs, int size, uint64_t region_ofs, uint64_t region_size) "write cfg ptr %p ofs 0x%x size 0x%x (region addr 0x%"PRIx64" size 0x%"PRIx64")"
 qemu_vfio_region_info(const char *desc, uint64_t region_ofs, uint64_t region_size, uint32_t cap_offset) "region '%s' addr 0x%"PRIx64" size 0x%"PRIx64" cap_ofs 0x%"PRIx32
+qemu_vfio_pci_map_bar(int index, uint64_t region_ofs, uint64_t region_size, int ofs, void *host) "map region bar#%d addr 0x%"PRIx64" size 0x%"PRIx64" ofs 0x%x host %p"

diff --git a/util/vfio-helpers.c b/util/vfio-helpers.c
index cd6287c3a98c1a24f590ae68e78227d343c1eaaa..278c54902e7155a4b8bea7faca6f84f00896bf7f 100644 (file)
--- a/util/vfio-helpers.c
+++ b/util/vfio-helpers.c
@@ -166,6 +166,8 @@ void *qemu_vfio_pci_map_bar(QEMUVFIOState *s, int index,
     p = mmap(NULL, MIN(size, s->bar_region_info[index].size - offset),
              prot, MAP_SHARED,
              s->device, s->bar_region_info[index].offset + offset);
+    trace_qemu_vfio_pci_map_bar(index, s->bar_region_info[index].offset ,
+                                size, offset, p);
     if (p == MAP_FAILED) {
         error_setg_errno(errp, errno, "Failed to map BAR region");
         p = NULL;