svn commit: r276409 - head/sys/dev/virtio/mmio

Andrew Turner andrew at FreeBSD.org
Tue Dec 30 12:47:45 UTC 2014


Author: andrew
Date: Tue Dec 30 12:47:44 2014
New Revision: 276409
URL: https://svnweb.freebsd.org/changeset/base/276409

Log:
  Set the page size in the virtio-mmio driver. Some backends, e.g QEMU, assume
  a 1 byte page size until told otherwise.
  
  Sponsored by:	The FreeBSD Foundation

Modified:
  head/sys/dev/virtio/mmio/virtio_mmio.c

Modified: head/sys/dev/virtio/mmio/virtio_mmio.c
==============================================================================
--- head/sys/dev/virtio/mmio/virtio_mmio.c	Tue Dec 30 10:30:12 2014	(r276408)
+++ head/sys/dev/virtio/mmio/virtio_mmio.c	Tue Dec 30 12:47:44 2014	(r276409)
@@ -506,6 +506,8 @@ vtmmio_alloc_virtqueues(device_t dev, in
 	if (sc->vtmmio_vqs == NULL)
 		return (ENOMEM);
 
+	vtmmio_write_config_4(sc, VIRTIO_MMIO_GUEST_PAGE_SIZE, 1 << PAGE_SHIFT);
+
 	for (idx = 0; idx < nvqs; idx++) {
 		vqx = &sc->vtmmio_vqs[idx];
 		info = &vq_info[idx];


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