30 May, 2011
1 commit
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It's unclear to me if it's important, but it's obviously causing my
technical colleages some headaches and I'd hate such imprecision to
slow virtio adoption.I've emailed this to all non-trivial contributors for approval, too.
Signed-off-by: Rusty Russell
Acked-by: Grant Likely
Acked-by: Ryan Harper
Acked-by: Anthony Liguori
Acked-by: Eric Van Hensbergen
Acked-by: john cooper
Acked-by: Aneesh Kumar K.V
Acked-by: Christian Borntraeger
Acked-by: Fernando Luis Vazquez Cao
09 Feb, 2011
1 commit
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Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell
19 May, 2010
3 commits
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Instead of the host and guest independently enumerating ports, switch to
a control message to add ports where the host supplies the port number
so there's no ambiguity or a possibility of a race between the host and
the guest port numbers.We now no longer need the 'nr_ports' config value. Since no kernel has
been released with the MULTIPORT changes yet, we have a chance to fiddle
with the config space without adding compatibility features.This is beneficial for management software, which would now be able to
instantiate ports at known locations and avoid problems that arise with
implicit numbering in the host and the guest. This removes the 'guessing
game' part of it, and management software can now actually indicate
which id to spawn a particular port on.Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell -
The host may want to know and let management apps notify of port or
device add failures. Send a control message saying the device or port is
not ready in this case.Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell -
This reverts commit b7a413015d2986edf020fba765c906cc9cbcbfc9.
Multiport support was disabled for 2.6.34 because we wanted to introduce
a new ABI and since we didn't have any released kernel with the older
ABI and were out of the merge window, it didn't make sense keeping the
older ABI around.Now we revert the patch disabling multiport and rework the ABI in the
following patches.Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell
08 Apr, 2010
1 commit
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Move MULTIPORT feature and related config changes
out of exported headers, and disable the feature
at runtime.At this point, it seems less risky to keep code around
until we can enable it than rip it out completely.Signed-off-by: Michael S. Tsirkin
Signed-off-by: Rusty Russell
24 Feb, 2010
5 commits
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Remove port data; deregister from the hvc core if it's a console port.
Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell -
The host can set a name for ports so that they're easily discoverable
instead of going by the /dev/vportNpn naming. This attribute will be
placed in /sys/class/virtio-ports/vportNpn/name. udev scripts can then
create symlinks to the port using the name.Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell -
Allow guest userspace applications to open, read from, write to, poll
the ports via the char dev interface.When a port gets opened, a notification is sent to the host via a
control message indicating a connection has been established. Similarly,
on closing of the port, a notification is sent indicating disconnection.Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell -
This commit adds a new feature, MULTIPORT. If the host supports this
feature as well, the config space has the number of ports defined for
that device. New ports are spawned according to this information.The config space also has the maximum number of ports that can be
spawned for a particular device. This is useful in initializing the
appropriate number of virtqueues in advance, as ports might be
hot-plugged in later.Using this feature, generic ports can be created which are not tied to
hvc consoles.We also open up a private channel between the host and the guest via
which some "control" messages are exchanged for the ports, like whether
the port being spawned is a console port, resizing the console window,
etc.Next commits will add support for hotplugging and presenting char
devices in /dev/ for bi-directional guest-host communication.Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell -
Remove old lguest-style comments.
[Amit: - wingify comments acc. to kernel style
- indent comments ]Signed-off-by: Rusty Russell
Signed-off-by: Amit Shah
Signed-off-by: Rusty Russell
22 Oct, 2009
1 commit
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Rusty,
commit 3ca4f5ca73057a617f9444a91022d7127041970a
virtio: add virtio IDs file
moved all device IDs into a single file. While the change itself is
a very good one, it can break userspace applications. For example
if a userspace tool wanted to get the ID of virtio_net it used to
include virtio_net.h. This does no longer work, since virtio_net.h
does not include virtio_ids.h.
This patch moves all "#include " from the C
files into the header files, making the header files compatible with
the old ones.In addition, this patch exports virtio_ids.h to userspace.
CC: Fernando Luis Vazquez Cao
Signed-off-by: Christian Borntraeger
Signed-off-by: Rusty Russell
23 Sep, 2009
1 commit
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Virtio IDs are spread all over the tree which makes assigning new IDs
bothersome. Putting them together should make the process less error-prone.Signed-off-by: Fernando Luis Vazquez Cao
Signed-off-by: Rusty Russell
31 Jan, 2009
1 commit
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fix the following 'make headers_check' warning:
usr/include/linux/virtio_console.h:15: found __[us]{8,16,32,64} type without #include
Signed-off-by: Jaswinder Singh Rajput
30 Dec, 2008
1 commit
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this patch uses the new hvc callback hvc_resize to set the window size
which allows to change the tty size of hvc_console via a hvc_resize
function.I have added a new feature bit VIRTIO_CONSOLE_F_SIZE. The driver will
change the window size on tty open and via the config_changed callback
of the transport. Currently lguest and kvm_s390 have not implemented this
callback, but the callback can be implemented at a later point in time.Signed-off-by: Christian Borntraeger
Signed-off-by: Rusty Russell
25 Jul, 2008
1 commit
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We want others to implement and use virtio, so it makes sense to BSD
license the non-__KERNEL__ parts of the headers to make this crystal
clear.Signed-off-by: Rusty Russell
Acked-by: Christian Borntraeger
Acked-by: Mark McLoughlin
Acked-by: Ryan Harper
Acked-by: Eric Van Hensbergen
Acked-by: Anthony Liguori
23 Oct, 2007
1 commit
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This is an hvc-based virtio console driver. It's suboptimal becuase
hvc expects to have raw access to interrupts and virtio doesn't assume
that, so it currently polls.There are two solutions: expose hvc's "kick" interface, or wean off hvc.
Signed-off-by: Rusty Russell