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2012-12-23MAINTAINERS: Take over kvm maintenanceGleb Natapov
Replace Avi with myself as kvm maintainer. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23configure: allow disabling pixman if not neededRobert Schiele
When we build neither any system emulation targets nor the tools there is actually no need for pixman library. In that case do not enforce presence of that library on the system. Reviewed-by: Andreas F=E4rber <afaerber@suse.de> Signed-off-by: Robert Schiele <rschiele@gmail.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2012-12-23tmp105: Create API for TMP105 temperature sensor.Alex Horn
* 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>
2012-12-23build: Use separate makefile for "trace/"Lluís Vilanova
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>
2012-12-23win32: Switch thread abstraction to us TLS variable internallyJan Kiszka
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>
2012-12-23target-i386: CPUID: return highest basic leaf if eax > cpuid_xlevelEduardo Habkost
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 b3baa152aaef1905876670590275c2dd0bbb088c. 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>
2012-12-23qemu-char: Inherit ptys and improve output from -serial ptyLei Li
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>
2012-12-22target-xtensa: fix search_pc for the last TB opcodeMax Filippov
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>
2012-12-22net: add missing include fileLiming Wang
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>
2012-12-22translate-all.c: Use tb1->phys_hash_next directly in tb_remove陳韋任 (Wei-Ren Chen)
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>
2012-12-22net: Add missing include statement (fix compiler warnings for MinGW)Stefan Weil
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>
2012-12-22xen: add missing includePaolo Bonzini
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>
2012-12-22build: fix includes for VNCPaolo Bonzini
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>
2012-12-21Merge remote-tracking branch 'quintela/thread-20121220.next' into stagingAnthony Liguori
* 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>
2012-12-20migration: merge QEMUFileBuffered into MigrationStateJuan Quintela
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>
2012-12-20migration: fix qemu_get_fd for BufferedFilePaolo Bonzini
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>
2012-12-20ram: refactor ram_save_block() return valueJuan Quintela
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>
2012-12-20ram: account the amount of transferred ram betterJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20ram: optimize migration bitmap walkingJuan Quintela
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>
2012-12-20ram: Use memory_region_test_and_clear_dirtyJuan Quintela
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>
2012-12-20memory: introduce memory_region_test_and_clear_dirtyJuan Quintela
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>
2012-12-20ram: Add last_sent_blockJuan Quintela
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>
2012-12-20ram: rename last_block to last_seen_blockJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20migration: move migration notifierJuan Quintela
At this point, it is waranteed that state is ACTIVE. Old position didn't assured hat. Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20migration: Inline qemu_fopen_ops_buffered into migrate_fd_connectJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20migration: move migration_fd_put_ready()Juan Quintela
Put it near its use and un-export it. Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20migration: add XFER_LIMIT_RATIOJuan Quintela
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>
2012-12-20migration: move buffered_file.c code into migration.cJuan Quintela
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>
2012-12-20savevm: New save live migration method: pendingJuan Quintela
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>
2012-12-20buffered_file: unfold buffered_append in buffered_put_bufferJuan Quintela
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>
2012-12-20buffered_file: don't flush on put bufferJuan Quintela
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>
2012-12-20buffered_file: Unfold the trick to restart generating migration dataJuan Quintela
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>
2012-12-20migration: just lock migrate_fd_put_readyJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20migration: remove unfreeze logicJuan Quintela
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>
2012-12-20migration: make writes blockingJuan Quintela
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>
2012-12-20migration: move migration thread init code to migrate_fd_put_readyJuan Quintela
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>
2012-12-20migration: make qemu_fopen_ops_buffered() return voidJuan Quintela
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>
2012-12-20buffered_file: Move from using a timer to use a threadJuan Quintela
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>
2012-12-20protect the ramlist with a separate mutexUmesh Deshpande
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>
2012-12-20add a version number to ram_listUmesh Deshpande
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>
2012-12-20exec: sort the memory from biggest to smallestPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20exec: change RAM list to a TAILQPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20exec: change ramlist from MRU order to a 1-item cachePaolo Bonzini
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>
2012-12-20migration-fd: remove duplicate includeJuan Quintela
Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20migration: include qemu-file.hJuan Quintela
They don't use/know anything about buffered-file. Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-20migration: remove double call to migrate_fd_closePaolo Bonzini
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>
2012-12-20buffered_file: do not send more than s->bytes_xfer bytes per tickPaolo Bonzini
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>
2012-12-20migration: fix migration_bitmap leakPaolo Bonzini
Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Juan Quintela <quintela@redhat.com>
2012-12-19Merge remote-tracking branch 'bonzini/header-dirs' into stagingAnthony Liguori
* 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>
2012-12-19janitor: move remaining public headers to include/Paolo Bonzini
Headers in the root directory are now used only from within that directory. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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