mirrors/qemu
0
0
Fork 0
mirror of https://github.com/qemu/qemu.git synced 2024-11-30 07:13:38 +08:00
Code Issues Packages Projects Releases Wiki Activity
40,115 Commits 57 Branches 402 Tags 655 MiB
C 82.6%
C++ 6.5%
Python 3.3%
Dylan 2.9%
Shell 1.6%
Other 2.9%
b7bca73334
Go to file
Bharata B Rao b7bca73334 cpu: Convert cpu_index into a bitmap 
Currently CPUState::cpu_index is monotonically increasing and a newly
created CPU always gets the next higher index. The next available
index is calculated by counting the existing number of CPUs. This is
fine as long as we only add CPUs, but there are architectures which
are starting to support CPU removal, too. For an architecture like PowerPC
which derives its CPU identifier (device tree ID) from cpu_index, the
existing logic of generating cpu_index values causes problems.

With the currently proposed method of handling vCPU removal by parking
the vCPU fd in QEMU
(Ref: http://lists.gnu.org/archive/html/qemu-devel/2015-02/msg02604.html),
generating cpu_index this way will not work for PowerPC.

This patch changes the way cpu_index is handed out by maintaining
a bit map of the CPUs that tracks both addition and removal of CPUs.

The CPU bitmap allocation logic is part of cpu_exec_init(), which is
called by instance_init routines of various CPU targets. Newly added
cpu_exec_exit() API handles the deallocation part and this routine is
called from generic CPU instance_finalize.

Note: This new CPU enumeration is for !CONFIG_USER_ONLY only.
CONFIG_USER_ONLY continues to have the old enumeration logic.

Signed-off-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com>
[AF: max_cpus -> MAX_CPUMASK_BITS]
Signed-off-by: Andreas Färber <afaerber@suse.de>
2015-07-09 15:20:40 +02:00
audio ossaudio: fix memory leak 2015-07-08 13:11:01 +02:00
backends Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
block Bugfixes and Daniel Berrange's crypto library. 2015-07-08 20:46:35 +01:00
bsd-user target-i386: use memory API to implement SMRAM 2015-06-05 17:36:39 +02:00
crypto crypto: add a nettle cipher implementation 2015-07-08 13:11:01 +02:00
default-configs acpi: split out ICH ACPI support 2015-07-07 13:11:57 +03:00
disas target-mips: add MTHC0 and MFHC0 instructions 2015-06-12 09:05:31 +01:00
docs Patch queue for ppc - 2015-07-07 2015-07-07 21:16:06 +01:00
dtc@65cc4d2748 dtc: Update dtc / libfdt submodule to version 1.4.0 2015-06-03 23:56:49 +02:00
fpu target-s390x: define default NaN values 2015-06-05 01:37:58 +02:00
fsdev virtfs-proxy-helper: fail gracefully if socket path is too long 2015-06-16 20:32:29 +05:30
gdb-xml gdb-xml: Include XML for s390 vector registers 2015-05-27 17:52:03 +02:00
hw Bugfixes and Daniel Berrange's crypto library. 2015-07-08 20:46:35 +01:00
include cpu: Convert cpu_index into a bitmap 2015-07-09 15:20:40 +02:00
libcacard libcacard: pkgconfig: tidy dependent libs 2015-06-23 19:57:28 +03:00
libdecnumber remove libdecnumber/dpd/decimal128Local.h 2015-06-23 19:57:27 +03:00
linux-headers linux-headers: Update to 4.2-rc1 2015-07-06 17:59:01 +02:00
linux-user linux-user, ppc: mftbl can be used by user application 2015-07-07 17:44:49 +02:00
migration Pull request 2015-07-07 19:12:45 +01:00
net net: simplify net_client_init1() 2015-06-24 16:33:42 +01:00
pc-bios pseries: Update SLOF firmware image to qemu-slof-20150429 2015-07-07 17:44:49 +02:00
pixman@87eea99e44 pixman: update internal copy to pixman-0.32.6 2014-09-15 08:14:19 +02:00
po po: fix conflict with %.mo rule in rules.mak 2014-09-26 13:35:08 +02:00
qapi migration: create migration event 2015-07-07 14:54:55 +02:00
qga qga: added GuestPCIAddress information 2015-07-07 20:59:04 -05:00
qobject Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qom cpu: Convert cpu_index into a bitmap 2015-07-09 15:20:40 +02:00
roms pseries: Update SLOF firmware image to qemu-slof-20150429 2015-07-07 17:44:49 +02:00
scripts pci_regs.h: import from linux 2015-07-08 10:09:56 +03:00
slirp qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
stubs main-loop: introduce qemu_mutex_iothread_locked 2015-07-01 15:45:50 +02:00
target-alpha cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-arm cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-cris cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-i386 cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-lm32 cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-m68k cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-microblaze cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-mips cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-moxie cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-openrisc cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-ppc cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-s390x cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-sh4 cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-sparc cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-tricore cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-unicore32 cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
target-xtensa cpu: Add Error argument to cpu_exec_init() 2015-07-09 15:20:40 +02:00
tcg tcg/s390: fix branch target change during code retranslation 2015-07-07 17:51:47 +02:00
tests Bugfixes and Daniel Berrange's crypto library. 2015-07-08 20:46:35 +01:00
trace Remove superfluous '\n' around error_report() 2015-03-10 08:15:33 +03:00
ui ui: convert VNC to use generic cipher API 2015-07-08 13:11:01 +02:00
util crypto: move built-in AES implementation into crypto/ 2015-07-07 12:04:13 +02:00
.exrc qemu: add .exrc 2012-09-07 09:02:44 +03:00
.gitignore gitignore: Ignore more .pod files. 2015-04-04 09:45:59 +03:00
.gitmodules PPC: Add u-boot firmware for e500 2014-06-16 13:24:35 +02:00
.mailmap Update mailmap 2013-09-05 09:40:31 -05:00
.travis.yml .travis.yml: Add "--enable-modules" 2015-01-26 12:27:05 +01:00
accel.c accel: Create accel object when initializing machine 2014-10-09 15:36:14 +02:00
aio-posix.c AioContext: acquire/release AioContext during aio_poll 2015-04-28 15:36:08 +02:00
aio-win32.c AioContext: acquire/release AioContext during aio_poll 2015-04-28 15:36:08 +02:00
arch_init.c migration: reduce include files 2015-06-12 06:42:34 +02:00
async.c Revert "iothread: release iothread around aio_poll" 2015-06-12 13:58:33 +01:00
balloon.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
block.c block: Use bdrv_drain to replace uncessary bdrv_drain_all 2015-07-07 14:27:14 +01:00
blockdev-nbd.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
blockdev.c qmp: Add optional bool "unmap" to drive-mirror 2015-07-02 10:06:23 +01:00
blockjob.c blockjob: add block_job_release function 2015-07-07 14:27:14 +01:00
bootdevice.c misc: fix typos in copyright declaration 2015-03-26 14:21:43 +01:00
bt-host.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
bt-vhci.c sysemu: avoid proliferation of include/ subdirectories 2013-04-15 18:19:25 +02:00
Changelog Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
CODING_STYLE CODING_STYLE: Section about conditional statement 2014-08-15 18:54:06 +04:00
configure Bugfixes and Daniel Berrange's crypto library. 2015-07-08 20:46:35 +01:00
COPYING
COPYING.LIB
coroutine-gthread.c glib-compat.h: add new thread API emulation on top of pre-2.31 API 2014-06-10 07:44:01 +02:00
coroutine-sigaltstack.c coroutine-sigaltstack: Change jmp_buf to sigjmp_buf 2014-11-11 11:07:55 +03:00
coroutine-ucontext.c coroutine-ucontext: use __thread 2015-01-13 13:43:28 +00:00
coroutine-win32.c coroutine-win32.c: Add noinline attribute to work around gcc bug 2014-06-26 14:08:14 +01:00
cpu-exec.c include/exec: Move tb hash functions out 2015-06-26 16:00:51 +02:00
cpus.c main-loop: introduce qemu_mutex_iothread_locked 2015-07-01 15:45:50 +02:00
cputlb.c memory: replace cpu_physical_memory_reset_dirty() with test-and-clear 2015-06-05 17:10:00 +02:00
device_tree.c device-tree: Make a common-obj 2015-06-03 14:21:24 +03:00
device-hotplug.c pci-hotplug-old: Has been dead for five major releases, bury 2015-03-01 12:37:54 +01:00
disas.c disas: Remove uses of CPU env 2015-06-22 17:40:01 +02:00
dma-helpers.c range: remove useless inclusions 2015-04-30 16:05:48 +03:00
dump.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
exec.c cpu: Convert cpu_index into a bitmap 2015-07-09 15:20:40 +02:00
gdbstub.c semihosting: create SemihostingConfig structure and semihost.h 2015-06-19 14:17:45 +01:00
HACKING HACKING: Document vaddr type usage 2013-07-23 02:41:31 +02:00
hmp-commands.hx qmp/hmp: add rocker device support 2015-06-12 13:42:17 +01:00
hmp.c qmp: Add optional bool "unmap" to drive-mirror 2015-07-02 10:06:23 +01:00
hmp.h qmp/hmp: add rocker device support 2015-06-12 13:42:17 +01:00
iohandler.c iohandler: Change return type of qemu_set_fd_handler to "void" 2015-06-12 13:26:21 +01:00
ioport.c - miscellaneous cleanups for TCG (Emilio) and NBD (Bogdan) 2015-04-30 12:04:11 +01:00
iothread.c qom: Add helper function for getting user objects root 2015-06-19 18:40:00 +02:00
kvm-all.c VFIO updates for 2.4-rc0 2015-07-07 09:22:40 +01:00
kvm-stub.c kvm: some fixes to kvm_resamplefds_allowed 2015-07-06 12:15:14 -06:00
LICENSE vfio: move hw/misc/vfio.c to hw/vfio/pci.c Move vfio.h into include/hw/vfio 2014-12-19 15:24:06 -07:00
main-loop.c Change qemu_set_fd_handler2(..., NULL, ...) to qemu_set_fd_handler 2015-06-12 13:26:21 +01:00
MAINTAINERS crypto: introduce new module for computing hash digests 2015-07-07 12:04:07 +02:00
Makefile Makefile: Add "make ctags" 2015-06-23 20:23:39 +03:00
Makefile.objs crypto: introduce new module for computing hash digests 2015-07-07 12:04:07 +02:00
Makefile.target migration: move savevm.c inside migration/ 2015-06-12 06:42:30 +02:00
memory_mapping.c memory_mapping: Rework cpu related includes 2015-06-26 16:00:50 +02:00
memory.c exec: pull qemu_flush_coalesced_mmio_buffer() into address_space_rw/ld*/st* 2015-07-01 15:45:50 +02:00
module-common.c module: implement module loading 2014-02-20 13:14:18 +01:00
monitor.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
nbd.c qemu-nbd: only send a limited number of errno codes on the wire 2015-05-08 14:45:11 +02:00
numa.c numa: API to lookup NUMA node by address 2015-07-03 17:47:58 -03:00
os-posix.c rcu: do not create thread in pthread_atfork callback 2015-04-01 10:06:38 +02:00
os-win32.c pidfile: stop making pidfile error a special case 2014-11-02 10:04:34 +03:00
page_cache.c xbzrle: rebuild the cache_is_cached function 2015-01-15 17:49:43 +05:30
qapi-schema.json migration: Make events a capability 2015-07-07 14:54:55 +02:00
qdev-monitor.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qdict-test-data.txt
qemu-bridge-helper.c qemu-bridge-helper: Fix fd leak in main() 2014-06-27 10:39:10 +02:00
qemu-char.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-coroutine-io.c coroutine-io: Return -errno in case of error 2015-03-18 12:07:21 +01:00
qemu-coroutine-lock.c coroutine: remove unnecessary parentheses in qemu_co_queue_empty 2015-04-30 16:05:49 +03:00
qemu-coroutine-sleep.c coroutine: Drop co_sleep_ns 2014-08-29 10:46:58 +01:00
qemu-coroutine.c coroutine: Clean up qemu_coroutine_enter() 2015-03-09 11:11:59 +01:00
qemu-doc.texi raw-posix: Deprecate host floppy passthrough 2015-03-19 11:43:02 +01:00
qemu-img-cmds.hx qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-img.c Include qapi/qmp/qerror.h exactly where needed 2015-06-22 18:20:41 +02:00
qemu-img.texi qemu-img: Add progress output for amend 2014-11-03 11:41:48 +00:00
qemu-io-cmds.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-io.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-log.c qemu-log: Correct help text of 'log cpu_reset' 2015-02-10 09:27:20 +03:00
qemu-nbd.c qerror: Move #include out of qerror.h 2015-06-22 18:20:40 +02:00
qemu-nbd.texi nbd: Miscellaneous typo fixes. 2014-05-24 00:07:29 +04:00
qemu-options-wrapper.h vl.c: In qemu -h output, only print options for the arch we are running as 2011-12-19 10:27:33 -06:00
qemu-options.h
qemu-options.hx block/iscsi: restore compatiblity with libiscsi 1.9.0 2015-07-02 10:06:23 +01:00
qemu-seccomp.c seccomp: add mlockall to whitelist 2015-01-23 14:07:08 +01:00
qemu-tech.texi qemu-tech.texi: update implemented xtensa features list 2012-11-29 13:00:52 -06:00
qemu-timer.c qemu-timer: Call clock reset notifiers on forward jumps 2015-06-19 12:27:14 +02:00
qemu.nsi nsis: Improved support for parallel installation of 32 and 64 bit code 2013-11-07 07:02:44 +01:00
qemu.sasl sasl: Avoid 'Could not find keytab file' in syslog 2014-03-15 13:54:18 +04:00
qjson.c QJSON: Use OBJECT_CHECK 2015-05-11 08:59:07 -04:00
qmp-commands.hx qmp: Add optional bool "unmap" to drive-mirror 2015-07-02 10:06:23 +01:00
qmp.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
qtest.c qtest: pre-buffer hex nibs 2015-05-22 15:58:22 -04:00
README Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
rules.mak rules.mak: Force CFLAGS for all objects in DSO 2015-05-08 14:45:11 +02:00
softmmu_template.h softmmu: Add probe_write() 2015-06-11 10:13:28 +01:00
spice-qemu-char.c spice: fix spice_chr_add_watch() pre-condition 2015-05-29 09:56:01 +02:00
tcg-runtime.c tcg: Push tcg-runtime routines into exec/helper-* 2014-05-28 09:33:54 -07:00
tci.c tcg: Mask TCGMemOp appropriately for indexing 2015-06-09 06:35:29 -07:00
thread-pool.c thread-pool: clean up thread_pool_completion_bh() 2015-04-28 15:36:09 +02:00
thunk.c linux-user: Allocate thunk size dynamically 2015-06-15 11:36:58 +03:00
tpm.c Include monitor/monitor.h exactly where needed 2015-06-22 18:20:41 +02:00
trace-events vmstate: Create optional sections 2015-07-07 14:54:52 +02:00
translate-all.c cpu-all: complete "real" host page size API 2015-07-06 12:15:12 -06:00
translate-all.h translate-all: remove unnecessary argument to tb_invalidate_phys_range 2015-06-05 17:09:59 +02:00
user-exec.c exec: move functions to translate-all.h 2015-06-05 17:09:59 +02:00
VERSION Open 2.4 development tree 2015-04-25 22:05:07 +01:00
version.rc Use qemu-project.org domain name 2013-10-11 09:34:56 -07:00
vl.c Bugfixes and Daniel Berrange's crypto library. 2015-07-08 20:46:35 +01:00
xen-common-stub.c accel: Move Xen registration code to xen-common.c 2014-10-04 08:59:15 +02:00
xen-common.c accel: Pass MachineState object to accel init functions 2014-10-09 12:57:10 +02:00
xen-hvm-stub.c xen: Remove xen_cmos_set_s3_resume() 2015-03-10 08:15:33 +03:00
xen-hvm.c xen-220615, more SOB lines 2015-06-23 17:46:20 +01:00
xen-mapcache.c xen: add a lock for the mapcache 2015-01-20 14:24:17 +00:00

README 

Read the documentation in qemu-doc.html or on http://wiki.qemu-project.org

- QEMU team