mirrors/qemu
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
544cff46c0
qemu/include/exec
History
hongmianquan 544cff46c0 memory: avoid updating ioeventfds for some address_space 
When updating ioeventfds, we need to iterate all address spaces,
but some address spaces do not register eventfd_add|del call when
memory_listener_register() and they do nothing when updating ioeventfds.
So we can skip these AS in address_space_update_ioeventfds().

The overhead of memory_region_transaction_commit() can be significantly
reduced. For example, a VM with 8 vhost net devices and each one has
64 vectors, can reduce the time spent on memory_region_transaction_commit by 20%.

Message-ID: <20230830032906.12488-1-hongmianquan@bytedance.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Signed-off-by: hongmianquan <hongmianquan@bytedance.com>
Signed-off-by: David Hildenbrand <david@redhat.com>
2023-09-19 10:44:44 +02:00
..
user linux-user: Use ARRAY_SIZE with bitmask_transtbl 2023-08-09 07:17:42 -07:00
address-spaces.h exec/address-spaces.h: Remove unuseful 'exec/memory.h' include 2023-08-31 19:47:43 +02:00
confidential-guest-support.h confidential guest support: Introduce cgs "ready" flag 2021-02-08 16:57:38 +11:00
cpu_ldst.h Revert "include/exec: typedef abi_ptr to vaddr in softmmu" 2023-08-29 11:30:33 -07:00
cpu-all.h include/exec: Widen tlb_hit/tlb_hit_page() 2023-08-24 11:22:23 -07:00
cpu-common.h softmmu: Use async_run_on_cpu in tcg_commit 2023-08-29 09:55:06 -07:00
cpu-defs.h accel/tcg: Store some tlb flags in CPUTLBEntryFull 2023-06-26 17:33:00 +02:00
cputlb.h overall/alpha tcg cpus|hppa: Fix Lesser GPL version number 2020-11-15 16:43:54 +01:00
exec-all.h target/translate: Restrict 'exec/cpu_ldst.h' to user emulation 2023-08-31 19:47:43 +02:00
gdbstub.h gdbstub: move comment for gdb_register_coprocessor 2023-08-30 14:57:59 +01:00
helper-gen-common.h tcg: Split helper-gen.h 2023-06-05 12:04:29 -07:00
helper-gen.h tcg: Split helper-gen.h 2023-06-05 12:04:29 -07:00
helper-gen.h.inc tcg: Split helper-gen.h 2023-06-05 12:04:29 -07:00
helper-head.h tcg: Move env defines out of NEED_CPU_H in helper-head.h 2023-06-05 12:04:29 -07:00
helper-info.c.inc tcg: Pass TCGHelperInfo to tcg_gen_callN 2023-06-05 12:04:29 -07:00
helper-proto-common.h tcg: Use HAVE_CMPXCHG128 instead of CONFIG_CMPXCHG128 2023-07-15 08:02:49 +01:00
helper-proto.h tcg: Split helper-proto.h 2023-06-05 12:04:29 -07:00
helper-proto.h.inc tcg: Split helper-proto.h 2023-06-05 12:04:29 -07:00
hwaddr.h bulk: Rename TARGET_FMT_plx -> HWADDR_FMT_plx 2023-01-18 11:14:34 +01:00
ioport.h nomaintainer: Fix Lesser GPL version number 2020-11-15 17:04:40 +01:00
log.h include/exec/log: Do not reference QemuLogFile directly 2022-04-20 10:51:11 -07:00
memattrs.h include/exec/memattrs: Add two bits of space to MemTxAttrs 2023-06-23 11:15:44 +01:00
memop.h include/exec/memop: Add MO_ATOM_* 2023-05-16 15:21:38 -07:00
memopidx.h Normalize header guard symbol definition 2022-05-11 16:50:26 +02:00
memory_ldst_cached.h.inc exec/memory_ldst_cached: Use correct type size 2021-05-26 08:35:51 -07:00
memory_ldst_phys.h.inc exec/memory_ldst_phys: Use correct type sizes 2021-05-26 08:35:51 -07:00
memory_ldst.h.inc bulk: Do not declare function prototypes using 'extern' keyword 2023-08-31 19:47:43 +02:00
memory-internal.h exec/memory: Expose memory_region_access_valid() 2023-01-09 13:50:13 +01:00
memory.h memory: avoid updating ioeventfds for some address_space 2023-09-19 10:44:44 +02:00
page-vary.h bulk: Do not declare function prototypes using 'extern' keyword 2023-08-31 19:47:43 +02:00
plugin-gen.h plugins: Drop unused headers from exec/plugin-gen.h 2023-06-05 12:04:29 -07:00
poison.h accel: Remove HAX accelerator 2023-08-31 19:46:43 +02:00
ram_addr.h softmmu/physmem: Distinguish between file access mode and mmap protection 2023-09-19 10:23:21 +02:00
ramblock.h hostmem-file: add offset option 2023-05-23 16:47:03 +02:00
ramlist.h qapi: introduce x-query-ramblock QMP command 2021-11-02 15:55:14 +00:00
replay-core.h replay: Extract core API to 'exec/replay-core.h' 2023-02-27 22:29:01 +01:00
target_long.h include: split target_long definition from cpu-defs 2023-03-07 20:44:09 +00:00
target_page.h softmmu: Introduce qemu_target_page_mask() helper 2023-06-23 02:54:44 -04:00
tb-flush.h includes: move tb_flush into its own header 2023-03-07 17:06:33 +00:00
tlb-common.h tcg: Add tlb_fast_offset to TCGContext 2023-06-05 12:04:28 -07:00
translate-all.h accel/tcg: Move remainder of page locking to tb-maint.c 2022-12-20 17:11:12 -08:00
translation-block.h exec/translation-block: Clean up includes 2023-08-31 19:47:43 +02:00
translator.h accel/tcg: Fix typo in translator_io_start() description 2023-09-08 13:08:52 +03:00
tswap.h include/exec: Provide the tswap() functions for target independent code, too 2023-04-20 11:25:32 +02:00