This patch introduces a command line parameter and monitor command for starting
a live migration. The next patch will provide an example of how to use these
parameters.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5476 c046a42c-6fe2-441c-8c8c-71466251a162
This patch introduces a buffered QEMUFile wrapper. This allows QEMUFile's to be
rate limited. It also makes it easier to implement a QEMUFile that is
asynchronous since the current QEMUFile API requires that all reads and writes
be synchronous.
The only real non-obvious part of the API is the "frozen" concept. If the
backend returns EAGAIN, the QEMUFile is said to be "frozen". This means no
additional output will be sent to the backend until the file is unfrozen.
qemu_file_put_notify can be used to unfreeze a frozen file.
A synchronous interface is also provided to wait for an unfreeze event. This is
used during the final part of live migration when the VM is no longer running.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5475 c046a42c-6fe2-441c-8c8c-71466251a162
Replace signalfd with signal handler/pipe. There is no way to interrupt
the CPU execution loop when a file descriptor becomes readable. This
results in a large performance regression in sparc emulation during
bootup.
This patch switches us to signal handler/pipe which was originally
suggested by Ian Jackson. The signal handler lets us interrupt the
CPU emulation loop while the write to a pipe lets us avoid the
select/signal race condition.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5451 c046a42c-6fe2-441c-8c8c-71466251a162
This allows using a host's physical HCI as one of the HCIs attached
to the virtual machine. This brings various limitations because not
all commands/events are passed through by Linux kernel, some are
interpreted by the host's kernel for a speed gain.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5344 c046a42c-6fe2-441c-8c8c-71466251a162
This patch refactors the AIO layer to allow multiple AIO implementations. It's
only possible because of the recent signalfd() patch.
Right now, the AIO infrastructure is pretty specific to the block raw backend.
For other block devices to implement AIO, the qemu_aio_wait function must
support registration. This patch introduces a new function,
qemu_aio_set_fd_handler, which can be used to register a file descriptor to be
called back. qemu_aio_wait() now polls a set of file descriptors registered
with this function until one becomes readable or writable.
This patch should allow the implementation of alternative AIO backends (via a
thread pool or linux-aio) and AIO backends in non-traditional block devices
(like NBD).
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5297 c046a42c-6fe2-441c-8c8c-71466251a162
OpenBSD doesn't use AIO so don't try to build compatfd when not using AIO.
Also make sure to call qemu_aio_init() from bdrv_init. Everything that uses
bdrv calls bdrv_init so it makes sense to init aio from there instead of
in every single tool.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5197 c046a42c-6fe2-441c-8c8c-71466251a162
This patch introduces signalfd() to work around the signal/select race in
checking for AIO completions. For platforms that don't support signalfd(), we
emulate it with threads.
There was a long discussion about this approach. I don't believe there are any
fundamental problems with this approach and I believe eliminating the use of
signals is a good thing.
I've tested Windows and Linux using Windows and Linux guests. I've also checked
for disk IO performance regressions.
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5187 c046a42c-6fe2-441c-8c8c-71466251a162
This can be shared between the e1000, virtio-net, and xennet.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4971 c046a42c-6fe2-441c-8c8c-71466251a162
ppc64.ld from Heikki Lindholm's patch
http://marc.info/?l=qemu-devel&m=114086179024634&w=2
Issues:
x86_64 tripple faults shortly after decompressing the kernel
No immediate versions of most 64 bit operations
More...
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4932 c046a42c-6fe2-441c-8c8c-71466251a162
Hopefully someday will be merged with cs4231.c (SPARC version)
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4741 c046a42c-6fe2-441c-8c8c-71466251a162
Add basic support for TC6393XB system features. No support for GPIO
input though.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4702 c046a42c-6fe2-441c-8c8c-71466251a162
This adds basic support for emulating Sharp Zaurus SL-6000 PDA (tosa).
Currently it provides only basic support: no kbd/lcd, sound, ts, etc.
But it's able at least to boot Linux from CF.
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4643 c046a42c-6fe2-441c-8c8c-71466251a162
Factor out to sharpsl code to support devices that are present not only
in spitz-family PDAs but also in outher Sharp Zaurus PDAs
Signed-off-by: Dmitry Baryshkov <dbaryshkov@gmail.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4642 c046a42c-6fe2-441c-8c8c-71466251a162
* Use CFI-0002 flashes.
* Connect one of the ethernet blocks.
* Simplified irq numbering.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4430 c046a42c-6fe2-441c-8c8c-71466251a162
Add TSC2005 touchscreen controller.
Add N810 machine definition.
Unify N800 and N810 ATAG list generation.
Pass a word length parameter on every SPI transfer.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4374 c046a42c-6fe2-441c-8c8c-71466251a162
Also add various peripherals: two miscellaneous Nokia CBUS chips,
EPSON S1D13745 LCD/TV remote-framebuffer controller,
TWL92230 - standard OMAP2 power management companion chip on i2c.
Generic OneNAND flash memory,
TMP105 temperature sensor on i2c.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4215 c046a42c-6fe2-441c-8c8c-71466251a162
Add the OMAP242x (arm1136 core) initialisation with basic on-chip
peripherals and update OMAP1 peripherals which are re-used in OMAP2.
Make palmte.c and sd.c errors go to stderr.
Allow disabling SD chipselect.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4213 c046a42c-6fe2-441c-8c8c-71466251a162
