Commit Graph

23737 Commits

Author SHA1 Message Date
Alex Horn
2915efbfa8 tmp105: Create API for TMP105 temperature sensor.
* Define enum for TMP105 registers
* Move tmp105_set() from I2C to TMP105 header
* Document units and range of temperature as preconditions

Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Alex Horn <alex.horn@cs.ox.ac.uk>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23 14:37:51 -06:00
Lluís Vilanova
eac236ea7b build: Use separate makefile for "trace/"
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
--
Changes in v2:

* Do not depend on "qemu-timer-common.o".
* Use "$(obj)" in rules to refer to the build sub-directory.
* Remove dependencies against "$(GENERATED_HEADERS)".

Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23 14:28:02 -06:00
Jan Kiszka
6265e4ff32 win32: Switch thread abstraction to us TLS variable internally
We already depend on working __thread support for coroutines, so this
complication here is no longer needed.

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23 09:13:15 -06:00
Eduardo Habkost
57f26ae729 target-i386: CPUID: return highest basic leaf if eax > cpuid_xlevel
This fixes a subtle bug. A bug that probably won't cause trouble for any
existing OS, but a bug anyway:

Intel SDM Volume 2, CPUID Instruction states:

> Two types of information are returned: basic and extended function
> information. If a value entered for CPUID.EAX is higher than the maximum
> input value for basic or extended function for that processor then the
> data for the highest basic information leaf is returned. For example,
> using the Intel Core i7 processor, the following is true:
>
>   CPUID.EAX = 05H (* Returns MONITOR/MWAIT leaf. *)
>   CPUID.EAX = 0AH (* Returns Architectural Performance Monitoring leaf. *)
>   CPUID.EAX = 0BH (* Returns Extended Topology Enumeration leaf. *)
>   CPUID.EAX = 0CH (* INVALID: Returns the same information as CPUID.EAX = 0BH. *)
>   CPUID.EAX = 80000008H (* Returns linear/physical address size data. *)
>   CPUID.EAX = 8000000AH (* INVALID: Returns same information as CPUID.EAX = 0BH. *)

AMD's CPUID Specification, on the other hand, is less specific:

> The CPUID instruction supports two sets or ranges of functions,
> standard and extended.
>
> • The smallest function number of the standard function range is
>   Fn0000_0000. The largest function num- ber of the standard function
>   range, for a particular implementation, is returned in CPUID
>   Fn0000_0000_EAX.
>
> • The smallest function number of the extended function range is
>   Fn8000_0000. The largest function num- ber of the extended function
>   range, for a particular implementation, is returned in CPUID
>   Fn8000_0000_EAX.
>
> Functions that are neither standard nor extended are undefined and
> should not be relied upon.

QEMU's behavior matched Intel's specification before, but this was
changed by commit b3baa152aa. This patch
restores the behavior documented by Intel when cpuid_xlevel2 is 0.

The existing behavior when cpuid_xlevel2 is set (falling back to
level=cpuid_xlevel) is being kept, as I couldn't find any public
documentation on the CPUID 0xC0000000 function range on Centaur CPUs.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23 09:11:24 -06:00
Lei Li
586502189e qemu-char: Inherit ptys and improve output from -serial pty
Changes since V1:
  - Avoid crashing since qemu_opts_id() may return null on some
    systems according to Markus's suggestion.

When controlling a qemu instance from another program, it's
hard to know which serial port or monitor device is redirected
to which pty. With more than one device using "pty" a lot of
guesswork is involved.

$ ./x86_64-softmmu/qemu-system-x86_64 -serial pty -serial pty -monitor pty
char device redirected to /dev/pts/5
char device redirected to /dev/pts/6
char device redirected to /dev/pts/7

Although we can find out what everything else is connected to
by the "info chardev" with "-monitor stdio" in the command line,
It'd be very useful to be able to have qemu inherit pseudo-tty
file descriptors so they could just be specified on the command
line like:

$ ./x86_64-softmmu/qemu-system-x86_64 -serial pty -serial pty -monitor pty
char device compat_monitor0 redirected to /dev/pts/5
char device serial0 redirected to /dev/pts/6
char device serial1 redirected to /dev/pts/7

Referred link: https://bugs.launchpad.net/qemu/+bug/938552

Signed-off-by: Lei Li <lilei@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23 09:11:19 -06:00
Andreas Färber
501a7ce727 Merge branch 'master' of git://git.qemu.org/qemu into qom-cpu
Adapt header include paths.

Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-12-23 00:40:49 +01:00
Max Filippov
36f25d2537 target-xtensa: fix search_pc for the last TB opcode
Zero out tcg_ctx.gen_opc_instr_start for instructions representing the
last guest opcode in the TB.

Cc: qemu-stable@nongnu.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-22 12:09:24 +00:00
Liming Wang
3f124b6874 net: add missing include file
To fix building error:

CC    net/vde.o
net/vde.c: In function ‘vde_cleanup’:
net/vde.c:65:5: error: implicit declaration of function ‘qemu_set_fd_handler’ [-Werror=implicit-function-declaration]
net/vde.c:65:5: error: nested extern declaration of ‘qemu_set_fd_handler’ [-Werror=nested-externs]
cc1: all warnings being treated as errors

Signed-off-by: Liming Wang <walimisdev@gmail.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-22 12:06:48 +00:00
陳韋任 (Wei-Ren Chen)
0c884d1659 translate-all.c: Use tb1->phys_hash_next directly in tb_remove
When tb_remove was first commited at fd6ce8f6, there were three different
calls pass different names to offsetof. In current codebase, the other two
calls are replaced with tb_page_remove. There is no need to have a general
tb_remove. Omit passing the third parameter and using tb1->phys_hash_next
directly.

Signed-off-by: Chen Wei-Ren <chenwj@iis.sinica.edu.tw>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-22 12:06:24 +00:00
Stefan Weil
b2136140f6 net: Add missing include statement (fix compiler warnings for MinGW)
These and some more compiler warnings were caused by a recent commit:

net/tap-win32.c:724: warning: no previous prototype for ‘tap_has_ufo’
net/tap-win32.c:729: warning: no previous prototype for ‘tap_has_vnet_hdr’
...

Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-22 12:05:46 +00:00
Paolo Bonzini
4ad549e89e xen: add missing include
xen-all needs to access CharDeviceState's filename field, so
it needs to include char/char.h.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Tested-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-22 12:04:44 +00:00
Paolo Bonzini
ca273d58d8 build: fix includes for VNC
vnc-tls.h is included by vnc.h, and it includes gnutls/gnutls.h.
Hence, GnuTLS header files are needed by all files that include
vnc.h, most notably qmp.c.  Move these flags to QEMU_CFLAGS for
simplicity.

Reported-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2012-12-22 12:04:00 +00:00
Anthony Liguori
bb5801f551 Merge remote-tracking branch 'quintela/thread-20121220.next' into staging
* quintela/thread-20121220.next: (79 commits)
  migration: merge QEMUFileBuffered into MigrationState
  migration: fix qemu_get_fd for BufferedFile
  ram: refactor ram_save_block() return value
  ram: account the amount of transferred ram better
  ram: optimize migration bitmap walking
  ram: Use memory_region_test_and_clear_dirty
  memory: introduce memory_region_test_and_clear_dirty
  ram: Add last_sent_block
  ram: rename last_block to last_seen_block
  migration: move migration notifier
  migration: Inline qemu_fopen_ops_buffered into migrate_fd_connect
  migration: move migration_fd_put_ready()
  migration: add XFER_LIMIT_RATIO
  migration: move buffered_file.c code into migration.c
  savevm: New save live migration method: pending
  buffered_file: unfold buffered_append in buffered_put_buffer
  buffered_file: don't flush on put buffer
  buffered_file: Unfold the trick to restart generating migration data
  migration: just lock migrate_fd_put_ready
  migration: remove unfreeze logic
  ...

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-21 07:53:48 -06:00
Juan Quintela
9848a40427 migration: merge QEMUFileBuffered into MigrationState
Avoid splitting the state of outgoing migration, more or less arbitrarily,
between two data structures.  QEMUFileBuffered anyway is used only during
migration.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:40 +01:00
Paolo Bonzini
e659586e63 migration: fix qemu_get_fd for BufferedFile
Not really used, but nice to have it correct. :)

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:40 +01:00
Juan Quintela
b823ceaadf ram: refactor ram_save_block() return value
It could only return 0 if we only found dirty xbzrle pages that hadn't
changed (i.e. they were written with the same content).  We don't care
about that case, it is the same than nothing dirty.

So now the return of the function is how much have it written, nothing
else. Adjust callers.

And we also made ram_save_iterate() return the number of transferred
bytes, not the number of transferred pages.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:40 +01:00
Juan Quintela
3f7d7b0981 ram: account the amount of transferred ram better
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:40 +01:00
Juan Quintela
4c8ae0f60e ram: optimize migration bitmap walking
Instead of testing each page individually, we search what is the next
dirty page with a bitmap operation.  We have to reorganize the code to
move from a "for" loop, to a while(dirty) loop.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:40 +01:00
Juan Quintela
ece7931817 ram: Use memory_region_test_and_clear_dirty
This avoids having to do two walks over the dirty bitmap, once reading
the dirty bits, and anthoer cleaning them.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:40 +01:00
Juan Quintela
6c279db8ee memory: introduce memory_region_test_and_clear_dirty
This function avoids having to do two calls, one to test the dirty bit, and
other to reset it.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:39 +01:00
Juan Quintela
5f718a15d0 ram: Add last_sent_block
This is the last block from where we have sent data.

Signed-off-by: Orit Wasserman <owasserm@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:39 +01:00
Juan Quintela
b23a9a5cad ram: rename last_block to last_seen_block
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:39 +01:00
Juan Quintela
0d3b26f548 migration: move migration notifier
At this point, it is waranteed that state is ACTIVE.  Old position
didn't assured hat.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:39 +01:00
Juan Quintela
2e45086533 migration: Inline qemu_fopen_ops_buffered into migrate_fd_connect
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:39 +01:00
Juan Quintela
0e288fa369 migration: move migration_fd_put_ready()
Put it near its use and un-export it.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:39 +01:00
Juan Quintela
5b4e1eb769 migration: add XFER_LIMIT_RATIO
The "magic" divisions by 10 are there because of the value of BUFFER_DELAY.
Introduce a constant to explain them better.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:39 +01:00
Juan Quintela
0d82d0e8b9 migration: move buffered_file.c code into migration.c
This only moves the code (also from buffered_file.h to migration.h).
Fix whitespace until checkpatch is happy.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:36 +01:00
Juan Quintela
e4ed1541ac 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).

Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
f50b4986b2 buffered_file: unfold buffered_append in buffered_put_buffer
It was the only user, and now buffered_put_buffer just do the append

Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
c518dd841d buffered_file: don't flush on put buffer
We call buffered_put_buffer with iothread held, and buffered_flush() does
synchronous writes.  We only want to do the synchronous writes outside.

Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
78d1d231f8 buffered_file: Unfold the trick to restart generating migration data
This was needed before due to the way that the callbacks worked.

Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
e76274824d migration: just lock migrate_fd_put_ready
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
188a428559 migration: remove unfreeze logic
Now that we have a thread, and blocking writes, we don't need it.

Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
dd217b8732 migration: make writes blocking
Move all the writes to the migration_thread, and make writings
blocking.  Notice that are still using the iothread for everything
that we do.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
766bd1769e migration: move migration thread init code to migrate_fd_put_ready
This way everything related with migration is run on the migration
thread and no locking is needed.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
edfa1af52f migration: make qemu_fopen_ops_buffered() return void
We want the file assignment to happen before the thread is created to
avoid locking, so we just do it before creating the thread.

Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
2012-12-20 23:09:25 +01:00
Juan Quintela
c09f4cb2b3 buffered_file: Move from using a timer to use a thread
We still protect everything except the wait with the iothread lock.
But we moved from a timer to a thread.  Steps one by one.

We also need to detect when we have finished with a variable "complete".

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:09:18 +01:00
Umesh Deshpande
b2a8658ef5 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_.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Umesh Deshpande <udeshpan@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
2012-12-20 23:08:47 +01:00
Umesh Deshpande
f798b07f51 add a version number to ram_list
This will be used to detect if last_block might have become invalid
across different calls to ram_save_live.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Umesh Deshpande <udeshpan@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>

Reviewed-by: Orit Wasserman <owasserm@redhat.com>
2012-12-20 23:08:47 +01:00
Paolo Bonzini
abb26d63e7 exec: sort the memory from biggest to smallest
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:08:47 +01:00
Paolo Bonzini
a3161038a1 exec: change RAM list to a TAILQ
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:08:47 +01:00
Paolo Bonzini
0d6d3c87a2 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.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 23:08:40 +01:00
Juan Quintela
803ef03257 migration-fd: remove duplicate include
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 22:48:54 +01:00
Juan Quintela
557ec5a001 migration: include qemu-file.h
They don't use/know anything about buffered-file.

Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 22:48:28 +01:00
Paolo Bonzini
24ea1e4b4b migration: remove double call to migrate_fd_close
The call in buffered_close is enough, because buffered_close is called
already by migrate_fd_cleanup.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 22:44:29 +01:00
Paolo Bonzini
bde54c08b4 buffered_file: do not send more than s->bytes_xfer bytes per tick
Sending more was possible if the buffer was large.

Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 22:44:29 +01:00
Paolo Bonzini
244eaa7514 migration: fix migration_bitmap leak
Cc: qemu-stable@nongnu.org
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20 22:44:29 +01:00
Michael S. Tsirkin
d2a0ccc613 virtio: make bindings typesafe
Move bindings from opaque to DeviceState.
This gives us better type safety with no performance cost.
Add macros to make future QOM work easier.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2012-12-20 09:20:01 +02:00
Gerd Hoffmann
15faf946f7 Update seabios to a810e4e72a0d42c7bc04eda57382f8e019add901
git shortlog:

Kevin O'Connor (6):
      floppy: Minor - reduce handle_0e code size when CONFIG_FLOPPY is disabled.
      vga: Minor comment spelling fix.
      Don't recursively evaluate CFLAGS variables.
      Don't use gcc's -combine option.
      Add compile checking phase to build.
      acpi: Use prt_slot() macro to describe irq pins of first PCI device.

Laszlo Ersek (1):
      maininit(): print machine UUID under seabios version message

Paolo Bonzini (1):
      acpi: reintroduce LNKS

Paolo's patch fixes the FreeBSD boot failure.

Cc: qemu-stable@nongnu.org
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2012-12-20 08:19:40 +01:00
Anthony Liguori
27dd773058 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/
  ...

Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-19 17:15:39 -06:00