Define VIRTIO_GPU_F_BLOB_ALIGNMENT (feature bit 5) per the OASIS
virtio specification and add the blob_alignment field to struct
virtio_gpu_config.

This allows the host to communicate its memory alignment requirement
to the guest via the device configuration space.

Header-only change, no functional impact.

Signed-off-by: Lucas Amaral <lucaaamaral@gmail.com>
---
 include/standard-headers/linux/virtio_gpu.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/include/standard-headers/linux/virtio_gpu.h b/include/standard-headers/linux/virtio_gpu.h
index 00cd3f0..252704e 100644
--- a/include/standard-headers/linux/virtio_gpu.h
+++ b/include/standard-headers/linux/virtio_gpu.h
@@ -64,6 +64,11 @@
  * context_init and multiple timelines
  */
 #define VIRTIO_GPU_F_CONTEXT_INIT        4
+/*
+ * VIRTIO_GPU_F_BLOB_ALIGNMENT: device advertises blob_alignment
+ * in virtio_gpu_config (OASIS virtio-spec feature bit 5)
+ */
+#define VIRTIO_GPU_F_BLOB_ALIGNMENT      5
 
 enum virtio_gpu_ctrl_type {
 	VIRTIO_GPU_UNDEFINED = 0,
@@ -365,6 +370,7 @@ struct virtio_gpu_config {
 	uint32_t events_clear;
 	uint32_t num_scanouts;
 	uint32_t num_capsets;
+	uint32_t blob_alignment;
 };
 
 /* simple formats for fbcon/X use */
-- 
2.52.0