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09c3ef656e
unicorn/qemu
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Alex Bennée 09c3ef656e
tcg: cpu-exec: remove tb_lock from the hot-path 
Lock contention in the hot path of moving between existing patched
TranslationBlocks is the main drag in multithreaded performance. This
patch pushes the tb_lock() usage down to the two places that really need
it:

- code generation (tb_gen_code)
- jump patching (tb_add_jump)

The rest of the code doesn't really need to hold a lock as it is either
using per-CPU structures, atomically updated or designed to be used in
concurrent read situations (qht_lookup).

To keep things simple I removed the #ifdef CONFIG_USER_ONLY stuff as the
locks become NOPs anyway until the MTTCG work is completed.

Backports commit 518615c6503ad78d3bb67ddf1cd848c4a41de02e from qemu
2018-02-26 01:58:33 -05:00
..
crypto crypto: Clean up includes 2018-02-19 00:47:40 -05:00
default-configs arm64eb: add support for ARM64 big endian. 2017-04-24 23:30:01 +08:00
docs docs: clarify memory region lifecycle 2018-02-12 15:11:21 -05:00
fpu softfloat: Fix warn about implicit conversion from int to int8_t 2018-02-25 22:54:39 -05:00
hw qdev: Fix object reference leak in case device.realize() fails 2018-02-25 21:00:26 -05:00
include tcg: Prepare TB invalidation for lockless TB lookup 2018-02-26 01:48:13 -05:00
qapi qapi: change QmpInputVisitor to QSLIST 2018-02-25 20:02:09 -05:00
qobject util: move declarations out of qemu-common.h 2018-02-22 09:25:48 -05:00
qom qapi: Add new visit_complete() function 2018-02-25 01:20:03 -05:00
scripts qapi: Implement boxed types for commands/events 2018-02-25 20:22:03 -05:00
target-arm target-arm: Fix lpae bit in FSR on an alignment fault 2018-02-25 23:10:29 -05:00
target-i386 target-i386: present virtual L3 cache info for vcpus 2018-02-25 23:16:14 -05:00
target-m68k target-m68k: fix get_mac_extf helper 2018-02-25 23:21:05 -05:00
target-mips target-mips: Silence unused function warning 2018-02-25 21:47:22 -05:00
target-sparc sparc: Use g_memdup() instead of g_new0() + memcpy() 2018-02-25 23:19:44 -05:00
tcg tcg: Lower indirect registers in a separate pass 2018-02-25 22:32:28 -05:00
util util: Move qemu-log to utils 2018-02-25 22:17:44 -05:00
aarch64.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
aarch64eb.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
accel.c accel: make configure_accelerator return void 2018-02-24 00:31:28 -05:00
arm.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
armeb.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
CODING_STYLE
configure configure: Always compile with -fwrapv 2018-02-25 23:17:41 -05:00
COPYING
COPYING.LIB
cpu-exec-common.c cpu-exec: Rename cpu_resume_from_signal() to cpu_loop_exit_noexc() 2018-02-24 17:25:28 -05:00
cpu-exec.c tcg: cpu-exec: remove tb_lock from the hot-path 2018-02-26 01:58:33 -05:00
cpus.c cpu: move exec-all.h inclusion out of cpu.h 2018-02-24 02:39:08 -05:00
cputlb.c cputlb: Add address parameter to VICTIM_TLB_HIT 2018-02-25 03:03:36 -05:00
exec.c exec: avoid realloc in phys_map_node_reserve 2018-02-25 19:32:40 -05:00
gen_all_header.sh
glib_compat.c qapi: Fix memleak in string visitors on int lists 2018-02-25 00:20:34 -05:00
HACKING
header_gen.py memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
ioport.c hw: remove pio_addr_t 2018-02-24 02:43:16 -05:00
LICENSE
m68k.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
Makefile Makefile: Add a FORCE target 2018-02-24 17:03:51 -05:00
Makefile.objs util: Move qemu-log to utils 2018-02-25 22:17:44 -05:00
Makefile.target tcg: split tcg_op_defs to -common 2018-02-17 15:23:51 -05:00
memory_mapping.c include/qemu/osdep.h: Don't include qapi/error.h 2018-02-21 23:08:18 -05:00
memory.c memory: Don't use memcpy for ram_device regions 2018-02-25 23:06:36 -05:00
mips64.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
mips64el.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
mips.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
mipsel.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
powerpc.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
qapi-schema.json qapi: Lazy creation of array types 2018-02-19 18:55:35 -05:00
qemu-timer.c timer/cpus: fix some typos and update some comments 2018-02-25 23:21:57 -05:00
rules.mak Makefile: add dependency on scripts/create_config 2018-02-24 17:05:03 -05:00
softmmu_template.h cputlb: Fix for self-modifying writes across page boundaries 2018-02-25 03:12:11 -05:00
sparc64.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
sparc.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00
tcg-runtime.c all: Clean up includes 2018-02-19 01:34:28 -05:00
translate-all.c tcg: set up tb->page_addr before insertion 2018-02-26 01:50:04 -05:00
translate-all.h user-exec: Push resume-from-signal code out to handle_cpu_signal() 2018-02-24 17:21:06 -05:00
translate-common.c exec: Clean up includes 2018-02-19 00:49:55 -05:00
unicorn_common.h qom/cpu: Add MemoryRegion property 2018-02-18 21:54:50 -05:00
VERSION
vl.c hw: explicitly include qemu/log.h 2018-02-24 02:00:45 -05:00
vl.h
x86_64.h memory: Replace skip_dump flag with ram_device 2018-02-25 23:00:45 -05:00