Enabling the I/O thread by default seems like an important part of declaring
1.0.  Besides allowing true SMP support with KVM, the I/O thread means that the
TCG VCPU doesn't have to multiplex itself with the I/O dispatch routines which
currently requires a (racey) signal based alarm system.

I know there have been concerns about performance.  I think so far the ones that
have come up (virtio-net) are most likely due to secondary reasons like
decreased batching.

I think we ought to force enabling I/O thread early in 1.0 development and
commit to resolving any lingering issues.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Reported-by: NLluis Vilanova <vilanova@ac.upc.edu>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Avoid duplicate object files during the link.  There are legitimate
cases where a link command-line would include duplicate object files
because two independent subsystems both depend on common infrastructure.

Use GNU make's $(sort) function to remove duplicate object files from
the link command-line.
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This patch changes qemu_set_fd_handler to be implemented in terms of
g_io_add_watch().  The semantics are a bit different so some glue is required.

qemu_set_fd_handler2 is much harder to convert because of its use of polling.

The glib main loop has the major of advantage of having a proven thread safe
architecture.  By using the glib main loop instead of our own, it will allow us
to eventually introduce multiple I/O threads.

I'm pretty sure that this will work on Win32, but I would appreciate some help
testing.  I think the semantics of g_io_channel_unix_new() are really just tied
to the notion of a "unix fd" and not necessarily unix itself.
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

This allows GSources to be used to register callback events in QEMU.  This is
useful as it allows us to take greater advantage of glib and also because it
allows us to write code that is more easily testable outside of QEMU since we
can make use of glib's main loop in unit tests.

All new code should use glib's callback mechanisms for registering fd events
which are very well documented at:

http://developer.gnome.org/glib/stable/glib-The-Main-Event-Loop.html

And:

http://developer.gnome.org/gio/stable/Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>

Move the declaration and initialisation of some variables in
tcg_out_qemu_ld and tcg_out_qemu_st inside CONFIG_SOFTMMU, to
avoid the "variable set but not used" warning of gcc 4.6.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: Nmalc <av1474@comtv.ru>

The simpletrace.process() function invokes analyzer methods with the
wrong number of arguments if a timestamp should be included.  This patch
fixes the issue so that trace analysis scripts can make use of
timestamps.
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

Given that all events with programmatically-controlled state are disabled by
default, we can delete the "disable" property from all events.
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Uses the generic interface provided in "trace/control.h" in order to provide
a programmatic interface as well as command line and monitor controls.
Signed-off-by: NFabien Chouteau <chouteau@adacore.com>
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Note that this refers to the backend-specific state (whether the output must be
generated), not the event "disabled" property (which always uses the "nop"
backend).
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Any event with the keyword/property "disable" generates an empty trace event
using the "nop" backend, regardless of the current backend.
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

The "-trace events" argument can be used to provide a file with a list of trace
event names that will be enabled prior to starting execution, thus providing
early tracing.

This saves the user from manually toggling event states through the monitor
interface or whichever backend-specific interface.
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

The current interface is generic for this small set of operations, and thus
other backends can easily modify the "trace/control.c" file to add their own
implementation.
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Generalize the 'st_print_trace_events' and 'st_change_trace_event_state' into
backend-specific 'trace_print_events' and 'trace_event_set_state' (respectively)
in the "trace/control.h" file.
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

This adds/modifies the following functions:

* get_name: Get _only_ the event name
* has_property: Return whether an event has a property (keyword before the event
  name)
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

A default implementation for backend-specific routines is provided in
"trace/default.c", which backends can override by setting "trace_default=no" in
"configure".
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Provides a more hierarchical view of the variable domain.

Also adds the CONFIG_TRACE_* variables for all backends.

[Stefan added missing 'test' in stap if statement]
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

Helper programs like qemu-ga use tracing primitives, but qemu-timer-common.o
(also used by simpletrace.o) is not necessarily included in the linkage line.
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Using '$^' to establish the files to link with will remove any repeated entries
in the list of dependencies.
Signed-off-by: NLluís Vilanova <vilanova@ac.upc.edu>

Convert the tusb6010 to qdev.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: NRiku Voipio <riku.voipio@iki.fi>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>
Signed-off-by: NEdgar E. Iglesias <edgar.iglesias@gmail.com>

Mask out the sub-page bits that are used by ROM device for storing the
io-index and the IO_MEM_ROMD flag.
Signed-off-by: NJan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: NAvi Kivity <avi@redhat.com>

By default, require 4k of consecutive zero bytes for qemu-img to make the
output file sparse by not issuing a write request for the zeroed parts. Add an
-S option to allow users to tune this setting.

This helps to avoid situations where a lot of zero sectors and data sectors are
mixed and qemu-img tended to issue many tiny 512 byte writes.
Signed-off-by: NKevin Wolf <kwolf@redhat.com>

Signed-off-by: NStefan Weil <weil@mail.berlios.de>
Reviewed-by: NAndreas Färber <andreas.faerber@web.de>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

[Stefan fixed "doesn't" -> "don't"]
Signed-off-by: NAlon Levy <alevy@redhat.com>
Signed-off-by: NStefan Hajnoczi <stefanha@linux.vnet.ibm.com>

When adding a rom_device in I/O mode, we incorrectly masked off the low
bits, resulting in a pure RAM map.  Fix my masking off the high bits and
IO_MEM_ROMD, yielding a pure I/O map.
Signed-off-by: NAvi Kivity <avi@redhat.com>

This commit implements the prefetch engine feature of the GPMC
which can be used for NAND devices. This includes both interrupt
driven and DMA-filling modes.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

Refactor the gpmc state structure so items relating to
the prefetch engine are in their own sub-struct and have
more useful names.
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>

OMAP3630 adds an extra bit of address masking, so a mask of
0xb1111 is valid. Unfortunately the GPMC_REVISION is the same as
on the OMAP3430 which only has three bits of address masking, so
we have to derive this feature directly from the OMAP revision
rather than from the GPMC revision.
Signed-off-by: NJuha Riihimäki <juha.riihimaki@nokia.com>
[Riku Voipio: Fixes and restructuring patchset]
Signed-off-by: NRiku Voipio <riku.voipio@iki.fi>
[Peter Maydell: More fixes and cleanups for upstream submission]
Signed-off-by: NPeter Maydell <peter.maydell@linaro.org>