Hello all,
Here is a new iteration of the patch series that implements a
transport for guest and host communications.
I've tested for compatibility (old qemu new kernel, new qemu old
kernel, new qemu new kernel) and it all works fine*.
There are a few items on my todo list but this works
Expose multiple char devices (ports) for simple communication
between the host userspace and guest.
Sample offline usages can be: poking around in a guest to find out
the file systems used, applications installed, etc. Online usages
can be sharing of clipboard data between the guest and the host,
Notify users of the char interface whenever the file / connection is
opened.
The existing RESET event is triggered when the qemu char state is reset
as well; which may not be as interesting as char device open events.
Signed-off-by: Amit Shah amit.s...@redhat.com
---
qemu-char.c | 14
This interface extends the virtio-console device to handle
multiple ports that present a char device from which bits can
be sent and read.
Sample uses for such a device can be obtaining info from the
guest like the file systems used, apps installed, etc. for
offline usage and logged-in users,
Amit Shah amit.s...@redhat.com wrote:
This interface extends the virtio-console device to handle
multiple ports that present a char device from which bits can
be sent and read.
Sample uses for such a device can be obtaining info from the
guest like the file systems used, apps installed, etc.
Hi Juan,
On (Thu) Sep 03 2009 [16:06:54], Juan Quintela wrote:
diff --git a/hw/virtio-console.c b/hw/virtio-console.c
index 663c8b9..da590d2 100644
--- a/hw/virtio-console.c
+++ b/hw/virtio-console.c
#include hw.h
+#include monitor.h
+#include pci.h
+#include sys-queue.h
On (Thu) Sep 03 2009 [19:56:05], Amit Shah wrote:
Hi Juan,
On (Thu) Sep 03 2009 [16:06:54], Juan Quintela wrote:
diff --git a/hw/virtio-console.c b/hw/virtio-console.c
index 663c8b9..da590d2 100644
--- a/hw/virtio-console.c
+++ b/hw/virtio-console.c
#include hw.h
Amit Shah amit.s...@redhat.com wrote:
Hi
+static void virtio_console_set_port_active(uint32_t idx)
+{
+int i = 0;
+
+while (idx / 32) {
+i++;
+idx -= 32;
+}
It is just me, or you are doing a division + modulus in a very strange way?
With 2.6.31-rc5 in a KVM guest using dm and virtio_blk, we see the
following errors:
end_request: I/O error, dev vda, sector 0
end_request: I/O error, dev vda, sector 0
The errors go away if dm stops submitting empty barriers, by reverting:
commit 52b1fd5a27c625c78373e024bf570af3c9d44a79
On Thu, Aug 27, 2009 at 07:07:50PM +0300, Michael S. Tsirkin wrote:
What it is: vhost net is a character device that can be used to reduce
the number of system calls involved in virtio networking.
Existing virtio net code is used in the guest without modification.
There's similarity with
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