Author: bryanv
Date: Wed Mar 20 05:49:09 2013
New Revision: 248544
URL: http://svnweb.freebsd.org/changeset/base/248544
Log:
MFC 247870:
Remove the virtio dependency entry for the VirtIO device drivers. This
will prevent the kernel from linking if the device driver are included
without the virtio module. Remove pci and scbus for the same reason.
Also explain the relationship and necessity of the virtio and virtio_pci
modules. Currently in FreeBSD, we only support VirtIO PCI, but it could
be replaced with a different interface (like MMIO) and the device
(network, block, etc) will still function.
Approved by: grehan (mentor)
Modified:
stable/9/sys/amd64/conf/NOTES
stable/9/sys/conf/files.amd64
stable/9/sys/conf/files.i386
stable/9/sys/i386/conf/NOTES
Directory Properties:
stable/9/sys/ (props changed)
stable/9/sys/conf/ (props changed)
Modified: stable/9/sys/amd64/conf/NOTES
==============================================================================
--- stable/9/sys/amd64/conf/NOTES Wed Mar 20 05:44:03 2013
(r248543)
+++ stable/9/sys/amd64/conf/NOTES Wed Mar 20 05:49:09 2013
(r248544)
@@ -442,6 +442,13 @@ options SAFE_RNDTEST # enable rndtest s
#
# VirtIO support
+#
+# The virtio entry provides a generic bus for use by the device drivers.
+# It must be combined with an interface that communicates with the host.
+# Multiple such interfaces defined by the VirtIO specification. FreeBSD
+# only has support for PCI. Therefore, virtio_pci must be statically
+# compiled in or loaded as a module for the device drivers to function.
+#
device virtio # Generic VirtIO bus (required)
device virtio_pci # VirtIO PCI Interface
device vtnet # VirtIO Ethernet device
Modified: stable/9/sys/conf/files.amd64
==============================================================================
--- stable/9/sys/conf/files.amd64 Wed Mar 20 05:44:03 2013
(r248543)
+++ stable/9/sys/conf/files.amd64 Wed Mar 20 05:49:09 2013
(r248544)
@@ -385,11 +385,11 @@ dev/virtio/virtio.c optional
virtio
dev/virtio/virtqueue.c optional virtio
dev/virtio/virtio_bus_if.m optional virtio
dev/virtio/virtio_if.m optional virtio
-dev/virtio/pci/virtio_pci.c optional virtio_pci virtio pci
-dev/virtio/network/if_vtnet.c optional vtnet virtio
-dev/virtio/block/virtio_blk.c optional virtio_blk virtio
-dev/virtio/balloon/virtio_balloon.c optional virtio_balloon virtio
-dev/virtio/scsi/virtio_scsi.c optional virtio_scsi virtio scbus
+dev/virtio/pci/virtio_pci.c optional virtio_pci
+dev/virtio/network/if_vtnet.c optional vtnet
+dev/virtio/block/virtio_blk.c optional virtio_blk
+dev/virtio/balloon/virtio_balloon.c optional virtio_balloon
+dev/virtio/scsi/virtio_scsi.c optional virtio_scsi
isa/syscons_isa.c optional sc
isa/vga_isa.c optional vga
kern/kern_clocksource.c standard
Modified: stable/9/sys/conf/files.i386
==============================================================================
--- stable/9/sys/conf/files.i386 Wed Mar 20 05:44:03 2013
(r248543)
+++ stable/9/sys/conf/files.i386 Wed Mar 20 05:49:09 2013
(r248544)
@@ -363,11 +363,11 @@ dev/virtio/virtio.c optional
virtio
dev/virtio/virtqueue.c optional virtio
dev/virtio/virtio_bus_if.m optional virtio
dev/virtio/virtio_if.m optional virtio
-dev/virtio/pci/virtio_pci.c optional virtio_pci virtio pci
-dev/virtio/network/if_vtnet.c optional vtnet virtio
-dev/virtio/block/virtio_blk.c optional virtio_blk virtio
-dev/virtio/balloon/virtio_balloon.c optional virtio_balloon virtio
-dev/virtio/scsi/virtio_scsi.c optional virtio_scsi virtio scbus
+dev/virtio/pci/virtio_pci.c optional virtio_pci
+dev/virtio/network/if_vtnet.c optional vtnet
+dev/virtio/block/virtio_blk.c optional virtio_blk
+dev/virtio/balloon/virtio_balloon.c optional virtio_balloon
+dev/virtio/scsi/virtio_scsi.c optional virtio_scsi
i386/acpica/acpi_machdep.c optional acpi
acpi_wakecode.o optional acpi
\
dependency "$S/i386/acpica/acpi_wakecode.S assym.s" \
Modified: stable/9/sys/i386/conf/NOTES
==============================================================================
--- stable/9/sys/i386/conf/NOTES Wed Mar 20 05:44:03 2013
(r248543)
+++ stable/9/sys/i386/conf/NOTES Wed Mar 20 05:49:09 2013
(r248544)
@@ -773,6 +773,13 @@ device glxsb # AMD Geode LX Security
B
#
# VirtIO support
+#
+# The virtio entry provides a generic bus for use by the device drivers.
+# It must be combined with an interface that communicates with the host.
+# Multiple such interfaces defined by the VirtIO specification. FreeBSD
+# only has support for PCI. Therefore, virtio_pci must be statically
+# compiled in or loaded as a module for the device drivers to function.
+#
device virtio # Generic VirtIO bus (required)
device virtio_pci # VirtIO PCI Interface
device vtnet # VirtIO Ethernet device
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