Juan Quintela [Fri, 21 Sep 2012 09:18:18 +0000 (11:18 +0200)]
savevm: New save live migration method: pending
Code just now does (simplified for clarity)
if (qemu_savevm_state_iterate(s->file) == 1) {
vm_stop_force_state(RUN_STATE_FINISH_MIGRATE);
qemu_savevm_state_complete(s->file);
}
Problem here is that qemu_savevm_state_iterate() returns 1 when it
knows that remaining memory to sent takes less than max downtime.
But this means that we could end spending 2x max_downtime, one
downtime in qemu_savevm_iterate, and the other in
qemu_savevm_state_complete.
Changed code to:
pending_size = qemu_savevm_state_pending(s->file, max_size);
DPRINTF("pending size %lu max %lu\n", pending_size, max_size);
if (pending_size >= max_size) {
ret = qemu_savevm_state_iterate(s->file);
} else {
vm_stop_force_state(RUN_STATE_FINISH_MIGRATE);
qemu_savevm_state_complete(s->file);
}
So what we do is: at current network speed, we calculate the maximum
number of bytes we can sent: max_size.
Then we ask every save_live section how much they have pending. If
they are less than max_size, we move to complete phase, otherwise we
do an iterate one.
This makes things much simpler, because now individual sections don't
have to caluclate the bandwidth (it was implossible to do right from
there).
Umesh Deshpande [Wed, 17 Aug 2011 07:01:33 +0000 (00:01 -0700)]
protect the ramlist with a separate mutex
Add the new mutex that protects shared state between ram_save_live
and the iothread. If the iothread mutex has to be taken together
with the ramlist mutex, the iothread shall always be _outside_.
Paolo Bonzini [Wed, 14 Nov 2012 14:45:02 +0000 (15:45 +0100)]
exec: change ramlist from MRU order to a 1-item cache
Most of the time, only 2 items will be active (from/to for a string operation,
or code/data). But TCG guests likely won't have gigabytes of memory, so
this actually goes down to 1 item.
Anthony Liguori [Wed, 19 Dec 2012 23:15:39 +0000 (17:15 -0600)]
Merge remote-tracking branch 'bonzini/header-dirs' into staging
* bonzini/header-dirs: (45 commits)
janitor: move remaining public headers to include/
hw: move executable format header files to hw/
fpu: move public header file to include/fpu
softmmu: move remaining include files to include/ subdirectories
softmmu: move include files to include/sysemu/
misc: move include files to include/qemu/
qom: move include files to include/qom/
migration: move include files to include/migration/
monitor: move include files to include/monitor/
exec: move include files to include/exec/
block: move include files to include/block/
qapi: move include files to include/qobject/
janitor: add guards to headers
qapi: make struct Visitor opaque
qapi: remove qapi/qapi-types-core.h
qapi: move inclusions of qemu-common.h from headers to .c files
ui: move files to ui/ and include/ui/
qemu-ga: move qemu-ga files to qga/
net: reorganize headers
net: move net.c to net/
...
Paolo Bonzini [Thu, 6 Dec 2012 10:51:59 +0000 (11:51 +0100)]
qapi: remove qapi/qapi-types-core.h
The file is only including error.h and qerror.h. Prefer explicit
inclusion of whatever files are needed. Signed-off-by: Paolo Bonzini <[email protected]>
Paolo Bonzini [Wed, 24 Oct 2012 06:43:34 +0000 (08:43 +0200)]
net: reorganize headers
Move public headers to include/net, and leave private headers in net/.
Put the virtio headers in include/net/tap.h, removing the multiple copies
that existed. Leave include/net/tap.h as the interface for NICs, and
net/tap_int.h as the interface for OS-specific parts of the tap backend.
Paolo Bonzini [Tue, 25 Sep 2012 08:04:17 +0000 (10:04 +0200)]
janitor: do not rely on indirect inclusions of or from qemu-char.h
Various header files rely on qemu-char.h including qemu-config.h or
main-loop.h, but they really do not need qemu-char.h at all (particularly
interesting is the case of the block layer!). Clean this up, and also
add missing inclusions of qemu-char.h itself.
Anthony Liguori [Tue, 18 Dec 2012 21:41:43 +0000 (15:41 -0600)]
Merge remote-tracking branch 'stefanha/trivial-patches' into staging
* stefanha/trivial-patches:
configure: Earlier pkg-config probe
vmmouse_reset(): remove minimal code duplication
linux-user/syscall.c: remove wrong forward decl of setgroups()
fix build error on ARM due to wrong glibc check
gitignore: Add virtfs-proxy-helper
arm_gic: Add cpu nr to Raised IRQ message
zynq_slcr: Compile time warning fixes.
pflash_cfi0x: Send debug messages to stderr
pflash_cfi01: qemu_log_mask "unimplemented" msg
net, hub: fix the indent in the comments
Anthony Liguori [Tue, 18 Dec 2012 21:41:32 +0000 (15:41 -0600)]
Merge remote-tracking branch 'amit/master' into staging
* amit/master:
virtio-serial-bus: assert port is non-null in remove_port()
virtio-serial-bus: send_control_msg() should not deal with cpkts
virtio-serial: delete timer if active during exit
virtio-serial: allocate post_load only at load-time
virtio-serial: move active ports loading to separate function
virtio-serial: use uint32_t to count ports
Anthony Liguori [Tue, 18 Dec 2012 21:41:21 +0000 (15:41 -0600)]
Merge remote-tracking branch 'spice/spice.v66' into staging
* spice/spice.v66:
docs: add spice-port-fqdn.txt
spice-qemu-char: register spicevmc ports during qemu_spice_init()
spice-qemu-char: keep a list of spice chardev
spice-qemu-char: add spiceport chardev
spice-qemu-char: factor out CharDriverState creation
spice-qemu-char: write to chardev whatever amount it can read
qxl+vnc: register a vm state change handler for dummy spice_server
qxl: save qemu_create_displaysurface_from result
Anthony Liguori [Tue, 18 Dec 2012 21:41:04 +0000 (15:41 -0600)]
Merge remote-tracking branch 'sstabellini/xen-20121217' into staging
* sstabellini/xen-20121217:
cpu_ioreq_pio, cpu_ioreq_move: i should be uint32_t rather than int
cpu_ioreq_pio, cpu_ioreq_move: introduce read_phys_req_item, write_phys_req_item
Fix compile errors when enabling Xen debug logging.
xen: fix trivial PCI passthrough MSI-X bug
xen: implement support for secondary consoles in the console backend
John Spencer [Mon, 10 Dec 2012 06:59:44 +0000 (07:59 +0100)]
fix build error on ARM due to wrong glibc check
the test for glibc < 2 "succeeds" wrongly for any non-glibc C library,
and breaks the build on musl libc.
we must first test if __GLIBC__ is defined at all, before using it
unconditionally.
Amit Shah [Wed, 12 Dec 2012 12:56:09 +0000 (18:26 +0530)]
virtio-serial-bus: send_control_msg() should not deal with cpkts
Stuff the cpkt before calling send_control_msg(). This function should
not be concerned about contents of the buffer it receives.
A few code refactorings recently have made making this change easier
than earlier.
Coverity and clang have flagged this code several times in the past
(cpkt->id not set before send_control_event() passed it on to
send_control_msg()). This will finally eliminate the false-positive.
spice-qemu-char: write to chardev whatever amount it can read
The current code waits until the chardev can read MIN(len, VMC_MAX)
But some chardev may never reach than amount, in fact some of them
will only ever accept write of 1. Fix the min computation and remove
the VMC_MAX constant.
Uri Lublin [Wed, 12 Dec 2012 16:30:47 +0000 (18:30 +0200)]
qxl+vnc: register a vm state change handler for dummy spice_server
When qxl + vnc are used, a dummy spice_server is initialized.
The spice_server has to be told when the VM runstate changes,
which is what this patch does.
Without it, from qxl_send_events(), the following error message is shown:
qxl_send_events: spice-server bug: guest stopped, ignoring
Replace a lot of formulaic multiplications (containing casts, no less)
with calls to a pair of functions. This encapsulates in a single
place the operations which require care relating to integer overflow.
There are lots of external users of pci_internals.h,
apparently making it an internal interface only didn't
work out. Let's stop pretending it's an internal header.
Include dependencies from pci core using the correct path.
This is required now that it's in the separate directory.
Need to check whether they can be minimized, for now,
keep the code as is.
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