Commit Graph

108 Commits

Author SHA1 Message Date
Juan Quintela
dc3b83a062 vmstate: add VMSTATE_UINT16_EQUAL[_V]
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27 12:28:48 -05:00
Juan Quintela
eacf610f37 vmstate: Add support for partial buffers transmission
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27 12:28:48 -05:00
Juan Quintela
25dc563b09 vmstate: add VMSTATE_BUFFER_TEST
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-27 12:28:44 -05:00
Juan Quintela
f11f6a5fff vmstate: Add suppot for field_exist() test
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:43 -05:00
Juan Quintela
f89a8e4ede Add *TL functions to vmstate
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:42 -05:00
Juan Quintela
19df438b63 vmstate: add support for arrays of pointers
We need this to send arrays of timers

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:39 -05:00
Juan Quintela
289070c715 vmstate: create VMSTATE_INT16_ARRAY
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:38 -05:00
Juan Quintela
840e9cef84 vmstate: create VMSTATE_STRUCT_POINTER
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:38 -05:00
Juan Quintela
1894839f86 vmstate: create VMSTATE_I2C_SLAVE
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:38 -05:00
Juan Quintela
b6bd0bdc55 vmstate: add uint8 array
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:38 -05:00
Juan Quintela
6680f01c8c vmstate: Add support for sending partial arrays
This one is needed for changees happening on fdc.  It allows you to send
arrays of structs whose size we want to send it is another field with type
uint8_t.  (If you have been able to read the whole sentence without
stoping for breathing, you can use it.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:37 -05:00
Juan Quintela
d4bfa4d7c6 vmstate: remove const from pre_save() functions
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:37 -05:00
Juan Quintela
e59fb3741b vmstate: add version_id argument to post_load
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:36 -05:00
Juan Quintela
84e2e3eb5f vmstate: remove const for put operations
In a later patch, we introduce pre_save() and post_save() functions.
The whole point of that operation is to change things in the state.
Without this patch, we have to remove the const qualifier in each
use with a cast

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-10-05 09:32:36 -05:00
Juan Quintela
7e72abc382 vmstate: port cirrus_vga device
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 11:10:09 -05:00
Juan Quintela
80a04bbe90 vmstate: add uint64 array support
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 11:10:08 -05:00
Juan Quintela
632cf0730c vmstate: add support for arrays of uint16_t
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 11:10:06 -05:00
Juan Quintela
80cd83e7b2 vmstate: add support for uint8_t equal
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 11:10:06 -05:00
Juan Quintela
8fb0791d30 vmstate: Add pre/post_save() hooks
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 11:10:05 -05:00
Juan Quintela
fd4d52deab vmstate: Add pre_load() hook
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 11:10:05 -05:00
Juan Quintela
752ff2fa31 vmstate: rename run_after_load() -> post_load()
This naming was used in kvm tree, and is easier to remember

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 11:10:05 -05:00
Juan Quintela
1eb7538b77 vmstate: add sensible arguments to vmstate_unregister()
vmsd alone is not enugh, because we can have several structs saved with the same description (vmsd).

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-11 11:10:05 -05:00
Juan Quintela
13f5545daa Fix VMSTATE_PCI_DEVICE version
PCI device entries have to have a default version, not 2, because they are
used in the midle of other structures that can have _any_ version number.

We can't use proper versioning here until we have SubSections support.
Why we didn't noticed before?  Because in a PC, the only device ported with
a version less that 2 is piix_pm, and for that one, default pci values are
right.  If you use a virtio-console, you will see that its state it is not
loaded back.

Thanks to Amit Shah for reporting the problem and help debug the fix.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-09-09 18:20:58 -05:00
Blue Swirl
55a6e51f2a Add VMState support for ptimers
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-08-31 19:30:15 +00:00
Juan Quintela
cff09e9239 Add VMState support to run a function after load
Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:22 -05:00
Juan Quintela
73534f2f68 Port PCIDevice state to VMState
This uses a variant of buffer, with extra checks. Also uses the new
support for cheking that a read value is less or equal than a field.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:22 -05:00
Juan Quintela
0a031e0ac6 Add VMState support for int32_t check value
We read the saved value and check that it is less or equal than the one
stored in the structure.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:22 -05:00
Juan Quintela
6f67c50ff4 Add VMState support for static sized buffers (uint_8)
This patch adds support for static sized buffer and typecheks that the buffer is right.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:22 -05:00
Juan Quintela
b00319a9df Add VMState support for variable sized arrays
This patch add supports for variable sized arrays whose size is
another field of the state.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:22 -05:00
Juan Quintela
8250166039 Add VMState support for int32_t check value
We read the saved value and check that it is the same that the one
is stored in the structure.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:21 -05:00
Juan Quintela
79c451b9d8 Add VMState support for arrays of structs
This patch add supports for arrays of structs

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:21 -05:00
Juan Quintela
ec245e2111 Add VMState support for structs
This patch adds support for saving one VMStateDescription from other
VMStateDescription.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:21 -05:00
Juan Quintela
f752a6aae7 Add VMState support for arrays
This patch adds support for saving arrays inside the struct

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:21 -05:00
Juan Quintela
dde0463b4e Add VMState support for pointers
This patch adds support for saving pointers to values

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:21 -05:00
Juan Quintela
9ed7d6ae0f New VMstate save/load infrastructure
This patch introduces VMState infrastructure, to convert the save/load
functions of devices to a table approach.  This new approach has the
following advantages:
- it is type-safe
- you can't have load/save functions out of sync
- will allows us to have new interesting commands, like dump <device>, that
  shows all its internal state.
- Just now, the only added type is arrays, but we can add structures.
- Uses old load_state() function for loading old state.

Signed-off-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 20:30:21 -05:00
Paolo Bonzini
5ac1fad324 add file descriptor migration
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Cc: Chris Lalancette <clalance@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-27 19:33:15 -05:00
Paolo Bonzini
7f79dd281c unify popen/fopen qemu wrappers
While reading Chris's code for fd migration I noticed the duplication
between QEMUFilePopen and QEMUFileStdio.  This fixes it, and makes
qemu_fopen more similar qemu_popen.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-08-24 08:02:55 -05:00
Jan Kiszka
dda9b29f61 Add qemu_unregister_reset
Will be used by '-boot once=...', and should also help in other use
cases.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-16 08:28:12 -05:00
Jan Kiszka
76e30d0f13 Move boot_set callback backend
Move registration function for the boot_set callback handler and provide
qemu_boot_set so that it can also be used outside the monitor code.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-16 08:28:12 -05:00
Isaku Yamahata
3299397760 split out ioport related stuffs from vl.c into ioport.c.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-09 16:06:38 -05:00
Jan Kiszka
a08d43677f Revert "Introduce reset notifier order"
This reverts commit 8217606e6e (and
updates later added users of qemu_register_reset), we solved the
problem it originally addressed less invasively.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-06-29 14:18:08 -05:00
Chris Lalancette
8a43b1ea7f Allow monitor interaction when using migrate -exec
All,
     I've recently been playing around with migration via exec.  Unfortunately,
when starting the incoming qemu process with "-incoming exec:cmd", it suffers
the same problem that -incoming tcp used to suffer; namely, that you can't
interact with the monitor until after the migration has happened.  This causes
problems for libvirt usage of -incoming exec, since libvirt expects to be able
to access the monitor ahead of time.  This fairly simple patch allows you to
access the monitor both before and after the migration has completed using exec.

(note: developed/tested with qemu-kvm, but applies perfectly fine to qemu)

Signed-off-by: Chris Lalancette <clalance@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-27 09:46:07 -05:00
Jan Kiszka
8217606e6e Introduce reset notifier order
Add the parameter 'order' to qemu_register_reset and sort callbacks on
registration. On system reset, callbacks with lower order will be
invoked before those with higher order. Update all existing users to the
standard order 0.

Note: At least for x86, the existing users seem to assume that handlers
are called in their registration order. Therefore, the patch preserves
this property. If someone feels bored, (s)he could try to identify this
dependency and express it properly on callback registration.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22 10:50:34 -05:00
Glauber Costa
19629537bd introduce set_rate_limit function for QEMUFile
This patch converts the current callers of qemu_fopen_ops().

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-05-22 10:50:30 -05:00
Paul Brook
1ad2134f91 Hardware convenience library
The only target dependency for most hardware is sizeof(target_phys_addr_t).
Build these files into a convenience library, and use that instead of
building for every target.

Remove and poison various target specific macros to avoid bogus target
dependencies creeping back in.

Big/Little endian is not handled because devices should not know or care
about this to start with.

Signed-off-by: Paul Brook <paul@codesourcery.com>
2009-05-19 16:17:58 +01:00
aliguori
41bd13afda Add unregister_savevm() (Mark McLoughlin)
Currently there's no way to unregister a savevm callback, so
e.g. if a NIC is hot-unplugged and a savevm is issued, we'll
segfault.

Signed-off-by: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7148 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-17 17:10:59 +00:00
aliguori
4dabe24883 create qemu_file_set_error (Glauber Costa)
This is mainly for consistency, since we don't want
anything outside of savevm setting it explicitly. There
are current no users of that in qemu tree, but there
are potential candidates on kvm-userspace. And avi
is a nice guy, let's be nice with him.

Based on a patch by Yaniv Kamay

Signed-off-by: Glauber Costa <glommer@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6998 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-05 19:30:51 +00:00
aliguori
065e281356 Reintroduce migrate-to-exec: support (Charles Duffy)
KVM's live migration support included support for exec: URLs, allowing system
state to be written or received via an arbitrary popen()ed subprocess. This
provides a convenient way to pipe state through a compression algorithm or an
arbitrary network transport on its way to its destination, and a convenient way
to write state to disk; libvirt's qemu driver currently uses migration to exec:
targets for this latter purpose.

This version of the patch refactors now-common code from migrate-tcp.c into
migrate.c. 

Signed-off-by: Charles Duffy <Charles_Duffy@messageone.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5694 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-11 16:46:33 +00:00
aliguori
c1d3666532 Live migration for Win32 (Hervé Poussineau)
This patch fixes migration so that it works on Win32.  This requires using
socket specific calls since sockets cannot be treated like file descriptors
on win32.

Signed-off-by: Hervé Poussineau <hpoussin@reactos.org>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5525 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-24 21:55:17 +00:00
aliguori
871d2f0796 Fix some issues with QEMUFile
This patch allows QEMUFile's read and write operations to return 
negative error codes.  This is necessary to detect things like closed 
streams during live migration.

It also removes unused code for QEMUFileFD write path.  Finally, it 
makes sure to avoid attempting to flush an output buffer if the file
is only being used for input.  This was spotted by Uri Lublin.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5474 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-13 03:07:56 +00:00
aliguori
9366f41860 Introduce v3 of savevm protocol
The current savevm/loadvm protocol has some draw backs.  It does not support
the ability to do progressive saving which means it cannot be used for live
checkpointing or migration.  The sections sizes are 32-bit integers which
means that it will not function when using more than 4GB of memory for a guest.
It attempts to seek within the output file which means it cannot be streamed.
The current protocol also is pretty lax about how it supports forward
compatibility.  If a saved section version is greater than what the restore
code support, the restore code generally treats the saved data as being in
whatever version it supports.  This means that restoring a saved VM on an older
version of QEMU will likely result in silent guest failure.

This patch introduces a new version of the savevm protocol.  It has the
following features:

 * Support for progressive save of sections (for live checkpoint/migration)
 * An asynchronous API for doing save
 * Support for interleaving multiple progressive save sections
   (for future support of memory hot-add/storage migration)
 * Fully streaming format
 * Strong section version checking

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5434 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-06 14:53:52 +00:00
blueswir1
b6c4f71f50 Resurrect the safe part of r5274
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5401 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-02 19:14:17 +00:00
aliguori
5dafc53f1f Refactor QEMUFile for live migration
To support live migration, we override QEMUFile so that instead of writing to
disk, the save/restore state happens over a network connection.

This patch makes QEMUFile read/write operations function pointers so that we
can override them for live migration.

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>



git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5352 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-29 16:25:16 +00:00
blueswir1
2ca83a8dd6 Revert r5274 which breaks savevm/loadvm
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5321 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-25 20:24:19 +00:00
blueswir1
67d8cec34b Add signed versions of save/load functions
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5274 c046a42c-6fe2-441c-8c8c-71466251a162
2008-09-20 08:04:11 +00:00
blueswir1
3b4366de39 Add an opaque parameter to boot_set API, move function to monitor.c
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4763 c046a42c-6fe2-441c-8c8c-71466251a162
2008-06-20 16:25:06 +00:00
aurel32
0ecdffbb60 Allow bootdevice change from the monitor
(Gildas Le Nadan)


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@4333 c046a42c-6fe2-441c-8c8c-71466251a162
2008-05-04 20:11:34 +00:00
pbrook
87ecb68bdf Break up vl.h.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3674 c046a42c-6fe2-441c-8c8c-71466251a162
2007-11-17 17:14:51 +00:00