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Diffstat (limited to 'docs/devel/multi-thread-tcg.rst')
| -rw-r--r-- | docs/devel/multi-thread-tcg.rst | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/docs/devel/multi-thread-tcg.rst b/docs/devel/multi-thread-tcg.rst index d706c27..da9a153 100644 --- a/docs/devel/multi-thread-tcg.rst +++ b/docs/devel/multi-thread-tcg.rst @@ -4,6 +4,8 @@ This work is licensed under the terms of the GNU GPL, version 2 or later. See the COPYING file in the top-level directory. +.. _mttcg: + ================== Multi-threaded TCG ================== @@ -26,16 +28,15 @@ vCPU Scheduling We introduce a new running mode where each vCPU will run on its own user-space thread. This is enabled by default for all FE/BE combinations where the host memory model is able to accommodate the -guest (TCG_GUEST_DEFAULT_MO & ~TCG_TARGET_DEFAULT_MO is zero) and the -guest has had the required work done to support this safely -(TARGET_SUPPORTS_MTTCG). +guest (TCGCPUOps::guest_default_memory_order & ~TCG_TARGET_DEFAULT_MO is zero) +and the guest has had the required work done to support this safely +(TCGCPUOps::mttcg_supported). System emulation will fall back to the original round robin approach if: * forced by --accel tcg,thread=single * enabling --icount mode -* 64 bit guests on 32 bit hosts (TCG_OVERSIZED_GUEST) In the general case of running translated code there should be no inter-vCPU dependencies and all vCPUs should be able to run at full |