- 20 1月, 2010 1 次提交
-
-
由 Amit Shah 提交于
This commit converts the virtio-console device to create a new virtio-serial bus that can host console and generic serial ports. The file hosting this code is now called virtio-serial-bus.c. The virtio console is now a very simple qdev device that sits on the virtio-serial-bus and communicates between the bus and qemu's chardevs. This commit also includes a few changes to the virtio backing code for pci and s390 to spawn the virtio-serial bus. As a result of the qdev conversion, we get rid of a lot of legacy code. The old-style way of instantiating a virtio console using -virtioconsole ... is maintained, but the new, preferred way is to use -device virtio-serial -device virtconsole,chardev=... With this commit, multiple devices as well as multiple ports with a single device can be supported. For multiple ports support, each port gets an IO vq pair. Since the guest needs to know in advance how many vqs a particular device will need, we have to set this number as a property of the virtio-serial device and also as a config option. In addition, we also spawn a pair of control IO vqs. This is an internal channel meant for guest-host communication for things like port open/close, sending port properties over to the guest, etc. This commit is a part of a series of other commits to get the full implementation of multiport support. Future commits will add other support as well as ride on the savevm version that we bump up here. Signed-off-by: NAmit Shah <amit.shah@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
-
- 12 1月, 2010 2 次提交
-
-
由 Michael S. Tsirkin 提交于
Add feature bits as properties to virtio. This makes it possible to e.g. define machine without indirect buffer support, which is required for 0.10 compatibility, or without hardware checksum support, which is required for 0.11 compatibility. Since default values for optional features are now set by qdev, get_features callback has been modified: it sets non-optional bits, and clears bits not supported by host. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Acked-by: NGerd Hoffmann <kraxel@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
-
由 Michael S. Tsirkin 提交于
Rename features->guest_features. This is what they are, avoid confusion with host features which we also need to keep around. Signed-off-by: NMichael S. Tsirkin <mst@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
-
- 18 12月, 2009 1 次提交
-
-
由 Alexander Graf 提交于
Currently we always set the "config space changed" bit to 1 when triggering any virtio interrupt. While that worked in 2.6.27, newer kernels interpret that value as "only the config space changed and nothing else happened". Since we usually trigger interrupts to tell the guest that something did happen, we just not tell it the config space changed for now until we implement the correct callback for that. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
-
- 06 12月, 2009 1 次提交
-
-
由 Alexander Graf 提交于
On S390x we don't want to go through the hassle of emulating real existing hardware, because we don't need to for running Linux. So let's instead implement a machine that is 100% based on VirtIO which we fortunately implement already. This patch implements the bus that is the groundwork for such an S390x virtio machine. Signed-off-by: NAlexander Graf <agraf@suse.de> Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>
-