T0b1/wasmtime
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Flush Icache on AArch64 Windows (#4997)

Browse Source 
* cranelift: Add FlushInstructionCache for AArch64 on Windows

This was previously done on #3426 for linux.

* wasmtime: Add FlushInstructionCache for AArch64 on Windows

This was previously done on #3426 for linux.

* cranelift: Add MemoryUse flag to JIT Memory Manager

This allows us to keep the icache flushing code self-contained and not leak implementation details.

This also changes the windows icache flushing code to only flush pages that were previously unflushed.

* Add jit-icache-coherence crate

* cranelift: Use `jit-icache-coherence`

* wasmtime: Use `jit-icache-coherence`

* jit-icache-coherence: Make rustix feature additive

Mutually exclusive features cause issues.

* wasmtime: Remove rustix from wasmtime-jit

We now use it via jit-icache-coherence

* Rename wasmtime-jit-icache-coherency crate

* Use cfg-if in wasmtime-jit-icache-coherency crate

* Use inline instead of inline(always)

* Add unsafe marker to clear_cache

* Conditionally compile all rustix operations

membarrier does not exist on MacOS

* Publish `wasmtime-jit-icache-coherence`

* Remove explicit windows check

This is implied by the target_os = "windows" above

* cranelift: Remove len != 0 check

This is redundant as it is done in non_protected_allocations_iter

* Comment cleanups

Thanks @akirilov-arm!

* Make clear_cache safe

* Rename pipeline_flush to pipeline_flush_mt

* Revert "Make clear_cache safe"

This reverts commit 21165d81c9030ed9b291a1021a367214d2942c90.

* More docs!

* Fix pipeline_flush reference on clear_cache

* Update more docs!

* Move pipeline flush after `mprotect` calls

Technically the `clear_cache` operation is a lie in AArch64, so move the pipeline flush after the `mprotect` calls so that it benefits from the implicit cache cleaning done by it.

* wasmtime: Remove rustix backend from icache crate

* wasmtime: Use libc for macos

* wasmtime: Flush icache on all arch's for windows

* wasmtime: Add flags to membarrier call
This commit is contained in:
Afonso Bordado
2022-10-12 19:15:38 +01:00
committed by GitHub
parent 75cd888e23
commit 4639e85c4e
12 changed files with 334 additions and 87 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
Cargo.toml
View File

@@ -84,6 +84,7 @@ members = [
"crates/c-api",
"crates/cli-flags",
"crates/environ/fuzz",
"crates/jit-icache-coherence",
"examples/fib-debug/wasm",
"examples/wasi/wasm",
"examples/tokio/wasm",
@@ -126,6 +127,7 @@ wasi-common = { path = "crates/wasi-common", version = "=3.0.0" }
wasi-tokio = { path = "crates/wasi-common/tokio", version = "=3.0.0" }
wasi-cap-std-sync = { path = "crates/wasi-common/cap-std-sync", version = "=3.0.0" }
wasmtime-fuzzing = { path = "crates/fuzzing" }
wasmtime-jit-icache-coherence = { path = "crates/jit-icache-coherence", version = "=2.0.0" }
cranelift-wasm = { path = "cranelift/wasm", version = "0.90.0" }
cranelift-codegen = { path = "cranelift/codegen", version = "0.90.0" }