[PATCH v2 1/1] vhost-vdpa: mute unaligned memory error report

[Laurent Vivier]

With TPM CRM device, vhost-vdpa reports an error when it tries
to register a listener for a non aligned memory region:

  qemu-system-x86_64: vhost_vdpa_listener_region_add received unaligned region
  qemu-system-x86_64: vhost_vdpa_listener_region_del received unaligned region

This error can be confusing for the user whereas we only need to skip
the region (as it's already done after the error_report())

Rather than introducing a special case for TPM CRB memory section
to not display the message in this case, simply replace the
error_report() by a trace function (with more information, like the
memory region name).

Signed-off-by: Laurent Vivier <lvivier@redhat.com>
---
 hw/virtio/trace-events | 2 ++
 hw/virtio/vhost-vdpa.c | 8 ++++++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
index 8f8d05cf9b01..9b0d643b9475 100644
--- a/hw/virtio/trace-events
+++ b/hw/virtio/trace-events
@@ -34,7 +34,9 @@ vhost_vdpa_dma_map(void *vdpa, int fd, uint32_t msg_type, 
uint32_t asid, uint64_
 vhost_vdpa_dma_unmap(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, 
uint64_t iova, uint64_t size, uint8_t type) "vdpa:%p fd: %d msg_type: %"PRIu32" 
asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" type: %"PRIu8
 vhost_vdpa_listener_begin_batch(void *v, int fd, uint32_t msg_type, uint8_t 
type)  "vdpa:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8
 vhost_vdpa_listener_commit(void *v, int fd, uint32_t msg_type, uint8_t type)  
"vdpa:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8
+vhost_vdpa_listener_region_add_unaligned(void *v, const char *name, uint64_t 
offset_as, uint64_t offset_page) "vdpa: %p region %s 
offset_within_address_space %"PRIu64" offset_within_region %"PRIu64
 vhost_vdpa_listener_region_add(void *vdpa, uint64_t iova, uint64_t llend, void 
*vaddr, bool readonly) "vdpa: %p iova 0x%"PRIx64" llend 0x%"PRIx64" vaddr: %p 
read-only: %d"
+vhost_vdpa_listener_region_del_unaligned(void *v, const char *name, uint64_t 
offset_as, uint64_t offset_page) "vdpa: %p region %s 
offset_within_address_space %"PRIu64" offset_within_region %"PRIu64
 vhost_vdpa_listener_region_del(void *vdpa, uint64_t iova, uint64_t llend) 
"vdpa: %p iova 0x%"PRIx64" llend 0x%"PRIx64
 vhost_vdpa_add_status(void *dev, uint8_t status) "dev: %p status: 0x%"PRIx8
 vhost_vdpa_init(void *dev, void *vdpa) "dev: %p vdpa: %p"
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 3c575a9a6e9e..24d32f0d3728 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -323,7 +323,9 @@ static void vhost_vdpa_listener_region_add(MemoryListener 
*listener,
 
     if (unlikely((section->offset_within_address_space & ~TARGET_PAGE_MASK) !=
                  (section->offset_within_region & ~TARGET_PAGE_MASK))) {
-        error_report("%s received unaligned region", __func__);
+        trace_vhost_vdpa_listener_region_add_unaligned(v, section->mr->name,
+                       section->offset_within_address_space & 
~TARGET_PAGE_MASK,
+                       section->offset_within_region & ~TARGET_PAGE_MASK);
         return;
     }
 
@@ -405,7 +407,9 @@ static void vhost_vdpa_listener_region_del(MemoryListener 
*listener,
 
     if (unlikely((section->offset_within_address_space & ~TARGET_PAGE_MASK) !=
                  (section->offset_within_region & ~TARGET_PAGE_MASK))) {
-        error_report("%s received unaligned region", __func__);
+        trace_vhost_vdpa_listener_region_del_unaligned(v, section->mr->name,
+                       section->offset_within_address_space & 
~TARGET_PAGE_MASK,
+                       section->offset_within_region & ~TARGET_PAGE_MASK);
         return;
     }
 
-- 
2.41.0