diff options
Diffstat (limited to 'src/runtime/proc.go')
| -rw-r--r-- | src/runtime/proc.go | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/src/runtime/proc.go b/src/runtime/proc.go index 30ddeadff5..57ad17d594 100644 --- a/src/runtime/proc.go +++ b/src/runtime/proc.go @@ -1125,7 +1125,7 @@ func startTheWorldWithSema(emitTraceEvent bool) int64 { return startTime } -// Called to start an M. +// mstart is the entry-point for new Ms. // // This must not split the stack because we may not even have stack // bounds set up yet. @@ -1150,9 +1150,11 @@ func mstart() { _g_.stack.hi = uintptr(noescape(unsafe.Pointer(&size))) _g_.stack.lo = _g_.stack.hi - size + 1024 } - // Initialize stack guards so that we can start calling - // both Go and C functions with stack growth prologues. + // Initialize stack guard so that we can start calling regular + // Go code. _g_.stackguard0 = _g_.stack.lo + _StackGuard + // This is the g0, so we can also call go:systemstack + // functions, which check stackguard1. _g_.stackguard1 = _g_.stackguard0 mstart1() |