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Add the uffd feature to the wasmtime crate docs.

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Peter Huene
2021-02-26 12:33:54 -08:00
parent 89d3b5d25c
commit a481e11e63
1 changed files with 6 additions and 0 deletions
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6
crates/wasmtime/src/lib.rs
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@@ -172,6 +172,12 @@
//! * `vtune` - Not enabled by default, this feature compiles in support for //! * `vtune` - Not enabled by default, this feature compiles in support for
//! supporting VTune profiling of JIT code. //! supporting VTune profiling of JIT code.
//! //!
//! * `uffd` - Not enabled by default. This feature enables `userfaultfd` support
//! when using the pooling instance allocator. As handling page faults in userspace
//! comes with a performance penalty, this feature should only be enabled when kernel
//! lock contention is hampering multithreading throughput. This feature is only
//! supported on Linux and requires a Linux kernel version 4.11 or higher.
//!
//! ## Examples //! ## Examples
//! //!
//! In addition to the examples below be sure to check out the [online embedding //! In addition to the examples below be sure to check out the [online embedding