Commit Graph

10 Commits

Author SHA1 Message Date
Paolo Bonzini
5692399f0a backends: Introduce chr-testdev
From: Paolo Bonzini <pbonzini@redhat.com>

chr-testdev enables a virtio serial channel to be used for guest
initiated qemu exits. hw/misc/debugexit already enables guest
initiated qemu exits, but only for PC targets. chr-testdev supports
any virtio-capable target. kvm-unit-tests/arm is already making use
of this backend.

Currently there is a single command implemented, "q".  It takes a
(prefix) argument for the exit code, thus an exit is implemented by
writing, e.g. "1q", to the virtio-serial port.

It can be used as:
   $QEMU ... \
     -device virtio-serial-device \
     -device virtserialport,chardev=ctd -chardev testdev,id=ctd

or, use:
   $QEMU ... \
     -device virtio-serial-device \
     -device virtconsole,chardev=ctd -chardev testdev,id=ctd

to bind it to virtio-serial port0.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-08-06 17:53:05 +02:00
Paolo Bonzini
52330e1a96 hostmem: add file-based HostMemoryBackend
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Hu Tao <hutao@cn.fujitsu.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

MST: comment tweak
2014-06-19 18:44:20 +03:00
Igor Mammedov
1f07048933 add memdev backend infrastructure
Provides framework for splitting host RAM allocation/
policies into a separate backend that could be used
by devices.

Initially only legacy RAM backend is provided, which
uses memory_region_init_ram() allocator and compatible
with every CLI option that affects memory_region_init_ram().

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2014-06-18 21:10:30 +03:00
Michael Tokarev
849d8284c5 build: convert some obj-specific CFLAGS to use new foo.o-cflags syntax
Current Makefile system allows using foo.o-cflags variables to store
object-specific CFLAGS.  Convert some usages of old syntax
(using QEMU_CFLAGS += construct) to the new syntax.

Do not touch multifile modules for now, as build system isn't ready for this.

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-08 15:27:49 +02:00
Stefan Berger
8f0605cc9c QOM-ify the TPM support
QOM-ified the TPM support with much code borrowed from the rng implementation.

All other TPM related code moves will be provided in a subsequent patch.

Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
Message-id: 1364469981.24703.1.camel@d941e-10
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-04-02 08:15:18 -05:00
Paolo Bonzini
159b6e9f14 hw: move char backends to backends/
Braille and msmouse support is in hw/, but it is not hardware.
Move it to the backends/ directory.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-03-01 13:18:23 +01:00
Anthony Liguori
e75fce6cda rng-random: only build on POSIX platforms
There is no /dev/random on win32.

Cc: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-19 08:22:28 -06:00
Anthony Liguori
1da2738f55 rng-egd: introduce EGD compliant RNG backend
This backend talks EGD to a CharDriverState.  A typical way to invoke this would
be:

qemu -chardev socket,host=localhost,port=1024,id=chr0 \
     -object rng-egd,chardev=chr0,id=egd0 \
     -device virtio-rng-pci,rng=egd0

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-16 08:36:13 -06:00
Anthony Liguori
5c74521d24 rng-random: add an RNG backend that uses /dev/random (v3)
The filename can be overridden but it expects a non-blocking source of entropy.
A typical invocation would be:

qemu -object rng-random,id=rng0 -device virtio-rng-pci,rng=rng0

This can also be used with /dev/urandom by using the command line:

qemu -object rng-random,filename=/dev/urandom,id=rng0 \
     -device virtio-rng-pci,rng=rng0

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
---
v1 -> v2
 - merged header split patch into this one
v2 -> v3
 - bug fix in rng-random (Paolo)
2012-11-16 08:36:13 -06:00
Anthony Liguori
a9b7b2ad7b rng: add RndBackend abstract object class
This is the backend used by devices that need to request entropy.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-11-16 08:36:12 -06:00