diff --git a/.gitignore b/.gitignore
index 7978d68b76e..c6512e64a4e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -37,7 +37,7 @@ _testmain.go
 /src/go/build/zcgo.go
 /src/go/doc/headscan
 /src/internal/buildcfg/zbootstrap.go
-/src/runtime/internal/sys/zversion.go
+/src/internal/runtime/sys/zversion.go
 /src/unicode/maketables
 /src/time/tzdata/zzipdata.go
 /test.out
diff --git a/src/cmd/compile/internal/noder/helpers.go b/src/cmd/compile/internal/noder/helpers.go
index 0bff71e6584..45512706d2c 100644
--- a/src/cmd/compile/internal/noder/helpers.go
+++ b/src/cmd/compile/internal/noder/helpers.go
@@ -114,11 +114,11 @@ func isTypeParam(t types2.Type) bool {
 }
 
 // isNotInHeap reports whether typ is or contains an element of type
-// runtime/internal/sys.NotInHeap.
+// internal/runtime/sys.NotInHeap.
 func isNotInHeap(typ types2.Type) bool {
 	typ = types2.Unalias(typ)
 	if named, ok := typ.(*types2.Named); ok {
-		if obj := named.Obj(); obj.Name() == "nih" && obj.Pkg().Path() == "runtime/internal/sys" {
+		if obj := named.Obj(); obj.Name() == "nih" && obj.Pkg().Path() == "internal/runtime/sys" {
 			return true
 		}
 		typ = named.Underlying()
diff --git a/src/cmd/compile/internal/ssagen/ssa.go b/src/cmd/compile/internal/ssagen/ssa.go
index d0ca5b7f30f..e6d5a139572 100644
--- a/src/cmd/compile/internal/ssagen/ssa.go
+++ b/src/cmd/compile/internal/ssagen/ssa.go
@@ -4287,13 +4287,13 @@ func InitTables() {
 		// make it worthwhile as an intrinsic
 		brev_arch = append(brev_arch, sys.PPC64)
 	}
-	/******** runtime/internal/sys ********/
-	addF("runtime/internal/sys", "Bswap32",
+	/******** internal/runtime/sys ********/
+	addF("internal/runtime/sys", "Bswap32",
 		func(s *state, n *ir.CallExpr, args []*ssa.Value) *ssa.Value {
 			return s.newValue1(ssa.OpBswap32, types.Types[types.TUINT32], args[0])
 		},
 		brev_arch...)
-	addF("runtime/internal/sys", "Bswap64",
+	addF("internal/runtime/sys", "Bswap64",
 		func(s *state, n *ir.CallExpr, args []*ssa.Value) *ssa.Value {
 			return s.newValue1(ssa.OpBswap64, types.Types[types.TUINT64], args[0])
 		},
@@ -4309,9 +4309,9 @@ func InitTables() {
 
 	// Make Prefetch intrinsics for supported platforms
 	// On the unsupported platforms stub function will be eliminated
-	addF("runtime/internal/sys", "Prefetch", makePrefetchFunc(ssa.OpPrefetchCache),
+	addF("internal/runtime/sys", "Prefetch", makePrefetchFunc(ssa.OpPrefetchCache),
 		sys.AMD64, sys.ARM64, sys.PPC64)
-	addF("runtime/internal/sys", "PrefetchStreamed", makePrefetchFunc(ssa.OpPrefetchCacheStreamed),
+	addF("internal/runtime/sys", "PrefetchStreamed", makePrefetchFunc(ssa.OpPrefetchCacheStreamed),
 		sys.AMD64, sys.ARM64, sys.PPC64)
 
 	/******** internal/runtime/atomic ********/
@@ -4837,8 +4837,8 @@ func InitTables() {
 			return s.newValue1(ssa.OpCtz64, types.Types[types.TINT], y)
 		},
 		sys.S390X)
-	alias("math/bits", "ReverseBytes64", "runtime/internal/sys", "Bswap64", all...)
-	alias("math/bits", "ReverseBytes32", "runtime/internal/sys", "Bswap32", all...)
+	alias("math/bits", "ReverseBytes64", "internal/runtime/sys", "Bswap64", all...)
+	alias("math/bits", "ReverseBytes32", "internal/runtime/sys", "Bswap32", all...)
 	// ReverseBytes inlines correctly, no need to intrinsify it.
 	// Nothing special is needed for targets where ReverseBytes16 lowers to a rotate
 	// On Power10, 16-bit rotate is not available so use BRH instruction
@@ -5051,12 +5051,12 @@ func InitTables() {
 		sys.AMD64)
 	alias("math/bits", "Div", "math/bits", "Div64", sys.ArchAMD64)
 
-	alias("runtime/internal/sys", "TrailingZeros8", "math/bits", "TrailingZeros8", all...)
-	alias("runtime/internal/sys", "TrailingZeros32", "math/bits", "TrailingZeros32", all...)
-	alias("runtime/internal/sys", "TrailingZeros64", "math/bits", "TrailingZeros64", all...)
-	alias("runtime/internal/sys", "Len8", "math/bits", "Len8", all...)
-	alias("runtime/internal/sys", "Len64", "math/bits", "Len64", all...)
-	alias("runtime/internal/sys", "OnesCount64", "math/bits", "OnesCount64", all...)
+	alias("internal/runtime/sys", "TrailingZeros8", "math/bits", "TrailingZeros8", all...)
+	alias("internal/runtime/sys", "TrailingZeros32", "math/bits", "TrailingZeros32", all...)
+	alias("internal/runtime/sys", "TrailingZeros64", "math/bits", "TrailingZeros64", all...)
+	alias("internal/runtime/sys", "Len8", "math/bits", "Len8", all...)
+	alias("internal/runtime/sys", "Len64", "math/bits", "Len64", all...)
+	alias("internal/runtime/sys", "OnesCount64", "math/bits", "OnesCount64", all...)
 
 	/******** sync/atomic ********/
 
diff --git a/src/cmd/compile/internal/test/inl_test.go b/src/cmd/compile/internal/test/inl_test.go
index 46262695822..58f5df953b4 100644
--- a/src/cmd/compile/internal/test/inl_test.go
+++ b/src/cmd/compile/internal/test/inl_test.go
@@ -97,7 +97,7 @@ func TestIntendedInlining(t *testing.T) {
 			"traceLocker.ok",
 			"traceEnabled",
 		},
-		"runtime/internal/sys": {},
+		"internal/runtime/sys": {},
 		"internal/runtime/math": {
 			"MulUintptr",
 		},
@@ -246,9 +246,9 @@ func TestIntendedInlining(t *testing.T) {
 	if runtime.GOARCH != "386" {
 		// As explained above, TrailingZeros64 and TrailingZeros32 are not Go code on 386.
 		// The same applies to Bswap32.
-		want["runtime/internal/sys"] = append(want["runtime/internal/sys"], "TrailingZeros64")
-		want["runtime/internal/sys"] = append(want["runtime/internal/sys"], "TrailingZeros32")
-		want["runtime/internal/sys"] = append(want["runtime/internal/sys"], "Bswap32")
+		want["internal/runtime/sys"] = append(want["internal/runtime/sys"], "TrailingZeros64")
+		want["internal/runtime/sys"] = append(want["internal/runtime/sys"], "TrailingZeros32")
+		want["internal/runtime/sys"] = append(want["internal/runtime/sys"], "Bswap32")
 	}
 	if runtime.GOARCH == "amd64" || runtime.GOARCH == "arm64" || runtime.GOARCH == "loong64" || runtime.GOARCH == "mips" || runtime.GOARCH == "mips64" || runtime.GOARCH == "ppc64" || runtime.GOARCH == "riscv64" || runtime.GOARCH == "s390x" {
 		// internal/runtime/atomic.Loaduintptr is only intrinsified on these platforms.
diff --git a/src/cmd/compile/internal/types/pkg.go b/src/cmd/compile/internal/types/pkg.go
index c6ce7889afb..9f64b84db45 100644
--- a/src/cmd/compile/internal/types/pkg.go
+++ b/src/cmd/compile/internal/types/pkg.go
@@ -16,7 +16,7 @@ import (
 var pkgMap = make(map[string]*Pkg)
 
 type Pkg struct {
-	Path    string // string literal used in import statement, e.g. "runtime/internal/sys"
+	Path    string // string literal used in import statement, e.g. "internal/runtime/sys"
 	Name    string // package name, e.g. "sys"
 	Prefix  string // escaped path for use in symbol table
 	Syms    map[string]*Sym
diff --git a/src/cmd/compile/internal/types/type.go b/src/cmd/compile/internal/types/type.go
index 88052dc97b6..41fdefe830a 100644
--- a/src/cmd/compile/internal/types/type.go
+++ b/src/cmd/compile/internal/types/type.go
@@ -1650,7 +1650,7 @@ func NewNamed(obj Object) *Type {
 		t.SetIsShape(true)
 		t.SetHasShape(true)
 	}
-	if sym.Pkg.Path == "runtime/internal/sys" && sym.Name == "nih" {
+	if sym.Pkg.Path == "internal/runtime/sys" && sym.Name == "nih" {
 		// Recognize the special not-in-heap type. Any type including
 		// this type will also be not-in-heap.
 		// This logic is duplicated in go/types and
diff --git a/src/cmd/dist/build.go b/src/cmd/dist/build.go
index c033beabdbb..910d5290e59 100644
--- a/src/cmd/dist/build.go
+++ b/src/cmd/dist/build.go
@@ -639,7 +639,7 @@ var gentab = []struct {
 }{
 	{"go/build", "zcgo.go", mkzcgo},
 	{"cmd/go/internal/cfg", "zdefaultcc.go", mkzdefaultcc},
-	{"runtime/internal/sys", "zversion.go", mkzversion},
+	{"internal/runtime/sys", "zversion.go", mkzversion},
 	{"time/tzdata", "zzipdata.go", mktzdata},
 }
 
@@ -1707,7 +1707,7 @@ func checkNotStale(env []string, goBinary string, targets ...string) {
 	out := runEnv(workdir, CheckExit, env, append(goCmd, targets...)...)
 	if strings.Contains(out, "\tSTALE ") {
 		os.Setenv("GODEBUG", "gocachehash=1")
-		for _, target := range []string{"runtime/internal/sys", "cmd/dist", "cmd/link"} {
+		for _, target := range []string{"internal/runtime/sys", "cmd/dist", "cmd/link"} {
 			if strings.Contains(out, "STALE "+target) {
 				run(workdir, ShowOutput|CheckExit, goBinary, "list", "-f={{.ImportPath}} {{.Stale}}", target)
 				break
diff --git a/src/cmd/distpack/pack.go b/src/cmd/distpack/pack.go
index 55252493669..a4f18da8bd4 100644
--- a/src/cmd/distpack/pack.go
+++ b/src/cmd/distpack/pack.go
@@ -132,7 +132,7 @@ func main() {
 		// Generated during cmd/dist. See ../dist/build.go:/gentab.
 		"src/cmd/go/internal/cfg/zdefaultcc.go",
 		"src/go/build/zcgo.go",
-		"src/runtime/internal/sys/zversion.go",
+		"src/internal/runtime/sys/zversion.go",
 		"src/time/tzdata/zzipdata.go",
 
 		// Generated during cmd/dist by bootstrapBuildTools.
diff --git a/src/cmd/distpack/test.go b/src/cmd/distpack/test.go
index 22b54b5fe12..108907d0e6b 100644
--- a/src/cmd/distpack/test.go
+++ b/src/cmd/distpack/test.go
@@ -35,7 +35,7 @@ var srcRules = []testRule{
 	{name: "go/pkg/**", exclude: true},
 	{name: "go/src/cmd/dist/dist", exclude: true},
 	{name: "go/src/cmd/dist/dist.exe", exclude: true},
-	{name: "go/src/runtime/internal/sys/zversion.go", exclude: true},
+	{name: "go/src/internal/runtime/sys/zversion.go", exclude: true},
 	{name: "go/src/time/tzdata/zzipdata.go", exclude: true},
 }
 
diff --git a/src/cmd/go/go_test.go b/src/cmd/go/go_test.go
index b45a905880b..5720a397f7a 100644
--- a/src/cmd/go/go_test.go
+++ b/src/cmd/go/go_test.go
@@ -943,14 +943,14 @@ func TestNewReleaseRebuildsStalePackagesInGOPATH(t *testing.T) {
 	tg.run("install", "p1")
 	tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, before any changes")
 
-	// Changing mtime of runtime/internal/sys/sys.go
+	// Changing mtime of internal/runtime/sys/sys.go
 	// should have no effect: only the content matters.
 	// In fact this should be true even outside a release branch.
-	sys := tg.path("goroot/src/runtime/internal/sys/sys.go")
+	sys := tg.path("goroot/src/internal/runtime/sys/sys.go")
 	tg.sleep()
 	restore := addVar(sys, 0)
 	restore()
-	tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, after updating mtime of runtime/internal/sys/sys.go")
+	tg.wantNotStale("p1", "", "./testgo list claims p1 is stale, incorrectly, after updating mtime of internal/runtime/sys/sys.go")
 
 	// But changing content of any file should have an effect.
 	// Previously zversion.go was the only one that mattered;
diff --git a/src/cmd/internal/objabi/pkgspecial.go b/src/cmd/internal/objabi/pkgspecial.go
index 2772226c939..f288096a025 100644
--- a/src/cmd/internal/objabi/pkgspecial.go
+++ b/src/cmd/internal/objabi/pkgspecial.go
@@ -48,7 +48,7 @@ var runtimePkgs = []string{
 	"internal/runtime/atomic",
 	"internal/runtime/exithook",
 	"internal/runtime/math",
-	"runtime/internal/sys",
+	"internal/runtime/sys",
 	"internal/runtime/syscall",
 
 	"internal/abi",
diff --git a/src/cmd/internal/objabi/stack.go b/src/cmd/internal/objabi/stack.go
index 7c7ff4e0586..d50a7c1afd8 100644
--- a/src/cmd/internal/objabi/stack.go
+++ b/src/cmd/internal/objabi/stack.go
@@ -18,7 +18,7 @@ func StackNosplit(race bool) int {
 // stack guard size. Larger multipliers are used for non-optimized
 // builds that have larger stack frames or for specific targets.
 func stackGuardMultiplier(race bool) int {
-	// This arithmetic must match that in runtime/internal/sys/consts.go:StackGuardMultiplier.
+	// This arithmetic must match that in internal/runtime/sys/consts.go:StackGuardMultiplier.
 	n := 1
 	// On AIX, a larger stack is needed for syscalls.
 	if buildcfg.GOOS == "aix" {
diff --git a/src/go/build/deps_test.go b/src/go/build/deps_test.go
index 9e22955edaf..a0bcb4f27a0 100644
--- a/src/go/build/deps_test.go
+++ b/src/go/build/deps_test.go
@@ -83,7 +83,7 @@ var depsRules = `
 	< internal/stringslite
 	< internal/itoa
 	< internal/unsafeheader
-	< runtime/internal/sys
+	< internal/runtime/sys
 	< internal/runtime/syscall
 	< internal/runtime/atomic
 	< internal/runtime/exithook
diff --git a/src/internal/coverage/pkid.go b/src/internal/coverage/pkid.go
index a764cc4205e..46de9fd0ced 100644
--- a/src/internal/coverage/pkid.go
+++ b/src/internal/coverage/pkid.go
@@ -26,7 +26,7 @@ package coverage
 //    slot: 1 path='internal/goarch'  hard-coded id: 2
 //    slot: 2 path='internal/runtime/atomic'  hard-coded id: 3
 //    slot: 3 path='internal/goos'
-//    slot: 4 path='runtime/internal/sys'  hard-coded id: 5
+//    slot: 4 path='internal/runtime/sys'  hard-coded id: 5
 //    slot: 5 path='internal/abi'  hard-coded id: 4
 //    slot: 6 path='internal/runtime/math'  hard-coded id: 6
 //    slot: 7 path='internal/bytealg'  hard-coded id: 7
@@ -50,7 +50,7 @@ var rtPkgs = [...]string{
 	"internal/runtime/atomic",
 	"internal/goos",
 	"internal/chacha8rand",
-	"runtime/internal/sys",
+	"internal/runtime/sys",
 	"internal/abi",
 	"internal/runtime/math",
 	"internal/bytealg",
diff --git a/src/runtime/internal/sys/consts.go b/src/internal/runtime/sys/consts.go
similarity index 100%
rename from src/runtime/internal/sys/consts.go
rename to src/internal/runtime/sys/consts.go
diff --git a/src/runtime/internal/sys/consts_norace.go b/src/internal/runtime/sys/consts_norace.go
similarity index 100%
rename from src/runtime/internal/sys/consts_norace.go
rename to src/internal/runtime/sys/consts_norace.go
diff --git a/src/runtime/internal/sys/consts_race.go b/src/internal/runtime/sys/consts_race.go
similarity index 100%
rename from src/runtime/internal/sys/consts_race.go
rename to src/internal/runtime/sys/consts_race.go
diff --git a/src/runtime/internal/sys/intrinsics.go b/src/internal/runtime/sys/intrinsics.go
similarity index 100%
rename from src/runtime/internal/sys/intrinsics.go
rename to src/internal/runtime/sys/intrinsics.go
diff --git a/src/runtime/internal/sys/intrinsics_test.go b/src/internal/runtime/sys/intrinsics_test.go
similarity index 97%
rename from src/runtime/internal/sys/intrinsics_test.go
rename to src/internal/runtime/sys/intrinsics_test.go
index 67998850019..d466f3e5396 100644
--- a/src/runtime/internal/sys/intrinsics_test.go
+++ b/src/internal/runtime/sys/intrinsics_test.go
@@ -5,7 +5,7 @@
 package sys_test
 
 import (
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"testing"
 )
 
diff --git a/src/runtime/internal/sys/nih.go b/src/internal/runtime/sys/nih.go
similarity index 100%
rename from src/runtime/internal/sys/nih.go
rename to src/internal/runtime/sys/nih.go
diff --git a/src/runtime/internal/sys/sys.go b/src/internal/runtime/sys/sys.go
similarity index 100%
rename from src/runtime/internal/sys/sys.go
rename to src/internal/runtime/sys/sys.go
diff --git a/src/reflect/deepequal.go b/src/reflect/deepequal.go
index 502ea9f146b..041c3e1f7e0 100644
--- a/src/reflect/deepequal.go
+++ b/src/reflect/deepequal.go
@@ -41,7 +41,7 @@ func deepValueEqual(v1, v2 Value, visited map[visit]bool) bool {
 		case Pointer:
 			if !v1.typ().Pointers() {
 				// not-in-heap pointers can't be cyclic.
-				// At least, all of our current uses of runtime/internal/sys.NotInHeap
+				// At least, all of our current uses of internal/runtime/sys.NotInHeap
 				// have that property. The runtime ones aren't cyclic (and we don't use
 				// DeepEqual on them anyway), and the cgo-generated ones are
 				// all empty structs.
diff --git a/src/runtime/HACKING.md b/src/runtime/HACKING.md
index e1a43ba88e3..f0c60f3af9e 100644
--- a/src/runtime/HACKING.md
+++ b/src/runtime/HACKING.md
@@ -235,7 +235,7 @@ There are three mechanisms for allocating unmanaged memory:
   objects of the same type.
 
 In general, types that are allocated using any of these should be
-marked as not in heap by embedding `runtime/internal/sys.NotInHeap`.
+marked as not in heap by embedding `internal/runtime/sys.NotInHeap`.
 
 Objects that are allocated in unmanaged memory **must not** contain
 heap pointers unless the following rules are also obeyed:
diff --git a/src/runtime/arena.go b/src/runtime/arena.go
index 96197099ca5..936e3604bf3 100644
--- a/src/runtime/arena.go
+++ b/src/runtime/arena.go
@@ -87,7 +87,7 @@ import (
 	"internal/goarch"
 	"internal/runtime/atomic"
 	"internal/runtime/math"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/cgo/cgo.go b/src/runtime/cgo/cgo.go
index 1e3a5029183..c37135fbbe4 100644
--- a/src/runtime/cgo/cgo.go
+++ b/src/runtime/cgo/cgo.go
@@ -32,7 +32,7 @@ package cgo
 */
 import "C"
 
-import "runtime/internal/sys"
+import "internal/runtime/sys"
 
 // Incomplete is used specifically for the semantics of incomplete C types.
 type Incomplete struct {
diff --git a/src/runtime/cgocall.go b/src/runtime/cgocall.go
index b943b1c2d6b..ae91627972d 100644
--- a/src/runtime/cgocall.go
+++ b/src/runtime/cgocall.go
@@ -88,7 +88,7 @@ import (
 	"internal/abi"
 	"internal/goarch"
 	"internal/goexperiment"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/cpuprof.go b/src/runtime/cpuprof.go
index 100a78258a2..ea4d3a8cb0b 100644
--- a/src/runtime/cpuprof.go
+++ b/src/runtime/cpuprof.go
@@ -14,7 +14,7 @@ package runtime
 
 import (
 	"internal/abi"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/debuglog.go b/src/runtime/debuglog.go
index 695cd204f59..25186af7e04 100644
--- a/src/runtime/debuglog.go
+++ b/src/runtime/debuglog.go
@@ -18,7 +18,7 @@ package runtime
 import (
 	"internal/abi"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/export_test.go b/src/runtime/export_test.go
index d55da1028db..759463755ac 100644
--- a/src/runtime/export_test.go
+++ b/src/runtime/export_test.go
@@ -11,7 +11,7 @@ import (
 	"internal/goarch"
 	"internal/goos"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/histogram.go b/src/runtime/histogram.go
index 95230d1f39d..920a9561d23 100644
--- a/src/runtime/histogram.go
+++ b/src/runtime/histogram.go
@@ -6,7 +6,7 @@ package runtime
 
 import (
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/iface.go b/src/runtime/iface.go
index 41a10ae0121..5316182f4ab 100644
--- a/src/runtime/iface.go
+++ b/src/runtime/iface.go
@@ -8,7 +8,7 @@ import (
 	"internal/abi"
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/malloc.go b/src/runtime/malloc.go
index cbb4f67ee87..b24ebec27d2 100644
--- a/src/runtime/malloc.go
+++ b/src/runtime/malloc.go
@@ -105,7 +105,7 @@ import (
 	"internal/goos"
 	"internal/runtime/atomic"
 	"internal/runtime/math"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
@@ -1555,7 +1555,7 @@ var persistentChunks *notInHeap
 // sysStat must be non-nil.
 //
 // Consider marking persistentalloc'd types not in heap by embedding
-// runtime/internal/sys.NotInHeap.
+// internal/runtime/sys.NotInHeap.
 func persistentalloc(size, align uintptr, sysStat *sysMemStat) unsafe.Pointer {
 	var p *notInHeap
 	systemstack(func() {
@@ -1697,7 +1697,7 @@ func (l *linearAlloc) alloc(size, align uintptr, sysStat *sysMemStat) unsafe.Poi
 // like sysAlloc or persistentAlloc.
 //
 // In general, it's better to use real types which embed
-// runtime/internal/sys.NotInHeap, but this serves as a generic type
+// internal/runtime/sys.NotInHeap, but this serves as a generic type
 // for situations where that isn't possible (like in the allocators).
 //
 // TODO: Use this as the return type of sysAlloc, persistentAlloc, etc?
diff --git a/src/runtime/mbitmap.go b/src/runtime/mbitmap.go
index 689fac103cc..a25995f46fc 100644
--- a/src/runtime/mbitmap.go
+++ b/src/runtime/mbitmap.go
@@ -59,7 +59,7 @@ import (
 	"internal/abi"
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mcache.go b/src/runtime/mcache.go
index e8da133a694..97a5f70e9c7 100644
--- a/src/runtime/mcache.go
+++ b/src/runtime/mcache.go
@@ -6,7 +6,7 @@ package runtime
 
 import (
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mcentral.go b/src/runtime/mcentral.go
index bf597e1936d..1a4819bc2c4 100644
--- a/src/runtime/mcentral.go
+++ b/src/runtime/mcentral.go
@@ -14,7 +14,7 @@ package runtime
 
 import (
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 )
 
 // Central list of free objects of a given size.
diff --git a/src/runtime/mcheckmark.go b/src/runtime/mcheckmark.go
index 258f8892727..f5560cf50f1 100644
--- a/src/runtime/mcheckmark.go
+++ b/src/runtime/mcheckmark.go
@@ -15,7 +15,7 @@ package runtime
 import (
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mfinal.go b/src/runtime/mfinal.go
index 78313fb74c6..a926a8ec357 100644
--- a/src/runtime/mfinal.go
+++ b/src/runtime/mfinal.go
@@ -10,7 +10,7 @@ import (
 	"internal/abi"
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mfixalloc.go b/src/runtime/mfixalloc.go
index 7760ada3977..be977af7372 100644
--- a/src/runtime/mfixalloc.go
+++ b/src/runtime/mfixalloc.go
@@ -9,7 +9,7 @@
 package runtime
 
 import (
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
@@ -27,7 +27,7 @@ import (
 // smashed by freeing and reallocating.
 //
 // Consider marking fixalloc'd types not in heap by embedding
-// runtime/internal/sys.NotInHeap.
+// internal/runtime/sys.NotInHeap.
 type fixalloc struct {
 	size   uintptr
 	first  func(arg, p unsafe.Pointer) // called first time p is returned
diff --git a/src/runtime/mgcmark.go b/src/runtime/mgcmark.go
index 61e917df410..9a48d15552f 100644
--- a/src/runtime/mgcmark.go
+++ b/src/runtime/mgcmark.go
@@ -10,7 +10,7 @@ import (
 	"internal/abi"
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mgcscavenge.go b/src/runtime/mgcscavenge.go
index 4f0bd9c28dc..3d869ecdd20 100644
--- a/src/runtime/mgcscavenge.go
+++ b/src/runtime/mgcscavenge.go
@@ -93,7 +93,7 @@ package runtime
 import (
 	"internal/goos"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mgcstack.go b/src/runtime/mgcstack.go
index f4a83f5f59c..bc5911f1414 100644
--- a/src/runtime/mgcstack.go
+++ b/src/runtime/mgcstack.go
@@ -96,7 +96,7 @@ package runtime
 
 import (
 	"internal/goarch"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mgcwork.go b/src/runtime/mgcwork.go
index b91a6bd464d..2d66fa40023 100644
--- a/src/runtime/mgcwork.go
+++ b/src/runtime/mgcwork.go
@@ -7,7 +7,7 @@ package runtime
 import (
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mheap.go b/src/runtime/mheap.go
index 35fd08af50c..e4b1fa0574d 100644
--- a/src/runtime/mheap.go
+++ b/src/runtime/mheap.go
@@ -12,7 +12,7 @@ import (
 	"internal/cpu"
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mpagecache.go b/src/runtime/mpagecache.go
index 245b0cbfef2..0ed3e80c30d 100644
--- a/src/runtime/mpagecache.go
+++ b/src/runtime/mpagecache.go
@@ -5,7 +5,7 @@
 package runtime
 
 import (
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/mpallocbits.go b/src/runtime/mpallocbits.go
index d8a9d25789d..e8e70f36bee 100644
--- a/src/runtime/mpallocbits.go
+++ b/src/runtime/mpallocbits.go
@@ -5,7 +5,7 @@
 package runtime
 
 import (
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 )
 
 // pageBits is a bitmap representing one bit per page in a palloc chunk.
diff --git a/src/runtime/mprof.go b/src/runtime/mprof.go
index 006274757e6..a9adc7b6f74 100644
--- a/src/runtime/mprof.go
+++ b/src/runtime/mprof.go
@@ -12,7 +12,7 @@ import (
 	"internal/goarch"
 	"internal/profilerecord"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/netpoll.go b/src/runtime/netpoll.go
index 7b37d91b24a..36b9edfe217 100644
--- a/src/runtime/netpoll.go
+++ b/src/runtime/netpoll.go
@@ -8,7 +8,7 @@ package runtime
 
 import (
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
@@ -714,7 +714,7 @@ func (c *pollCache) alloc() *pollDesc {
 // makeArg converts pd to an interface{}.
 // makeArg does not do any allocation. Normally, such
 // a conversion requires an allocation because pointers to
-// types which embed runtime/internal/sys.NotInHeap (which pollDesc is)
+// types which embed internal/runtime/sys.NotInHeap (which pollDesc is)
 // must be stored in interfaces indirectly. See issue 42076.
 func (pd *pollDesc) makeArg() (i any) {
 	x := (*eface)(unsafe.Pointer(&i))
diff --git a/src/runtime/panic.go b/src/runtime/panic.go
index 98e96b12bf5..bd1ea096aa2 100644
--- a/src/runtime/panic.go
+++ b/src/runtime/panic.go
@@ -8,8 +8,8 @@ import (
 	"internal/abi"
 	"internal/goarch"
 	"internal/runtime/atomic"
+	"internal/runtime/sys"
 	"internal/stringslite"
-	"runtime/internal/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/proc.go b/src/runtime/proc.go
index c4f175b0b76..2cf8a31971f 100644
--- a/src/runtime/proc.go
+++ b/src/runtime/proc.go
@@ -11,8 +11,8 @@ import (
 	"internal/goos"
 	"internal/runtime/atomic"
 	"internal/runtime/exithook"
+	"internal/runtime/sys"
 	"internal/stringslite"
-	"runtime/internal/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/runtime2.go b/src/runtime/runtime2.go
index 4a789639611..62ed77aae56 100644
--- a/src/runtime/runtime2.go
+++ b/src/runtime/runtime2.go
@@ -9,7 +9,7 @@ import (
 	"internal/chacha8rand"
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/signal_arm64.go b/src/runtime/signal_arm64.go
index 4a96b3c2e70..af7d29f9de1 100644
--- a/src/runtime/signal_arm64.go
+++ b/src/runtime/signal_arm64.go
@@ -9,7 +9,7 @@ package runtime
 import (
 	"internal/abi"
 	"internal/goarch"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/signal_linux_s390x.go b/src/runtime/signal_linux_s390x.go
index 18c3b115efc..54e9d1fb9df 100644
--- a/src/runtime/signal_linux_s390x.go
+++ b/src/runtime/signal_linux_s390x.go
@@ -7,7 +7,7 @@ package runtime
 import (
 	"internal/abi"
 	"internal/goarch"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/signal_mipsx.go b/src/runtime/signal_mipsx.go
index ba92655152e..924e654c6cd 100644
--- a/src/runtime/signal_mipsx.go
+++ b/src/runtime/signal_mipsx.go
@@ -8,7 +8,7 @@ package runtime
 
 import (
 	"internal/abi"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/signal_ppc64x.go b/src/runtime/signal_ppc64x.go
index b5722f99c66..20f874c2ec4 100644
--- a/src/runtime/signal_ppc64x.go
+++ b/src/runtime/signal_ppc64x.go
@@ -8,7 +8,7 @@ package runtime
 
 import (
 	"internal/abi"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/signal_unix.go b/src/runtime/signal_unix.go
index 8ba498bdb23..a42972bb356 100644
--- a/src/runtime/signal_unix.go
+++ b/src/runtime/signal_unix.go
@@ -9,7 +9,7 @@ package runtime
 import (
 	"internal/abi"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/signal_windows.go b/src/runtime/signal_windows.go
index 4b7960c1f01..b0c653ee46d 100644
--- a/src/runtime/signal_windows.go
+++ b/src/runtime/signal_windows.go
@@ -6,7 +6,7 @@ package runtime
 
 import (
 	"internal/abi"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/slice.go b/src/runtime/slice.go
index 65883ea2f3a..ecc2e2921b3 100644
--- a/src/runtime/slice.go
+++ b/src/runtime/slice.go
@@ -8,7 +8,7 @@ import (
 	"internal/abi"
 	"internal/goarch"
 	"internal/runtime/math"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
@@ -18,7 +18,7 @@ type slice struct {
 	cap   int
 }
 
-// A notInHeapSlice is a slice backed by runtime/internal/sys.NotInHeap memory.
+// A notInHeapSlice is a slice backed by internal/runtime/sys.NotInHeap memory.
 type notInHeapSlice struct {
 	array *notInHeap
 	len   int
diff --git a/src/runtime/stack.go b/src/runtime/stack.go
index cdf859a7ff1..bdfeb21c18e 100644
--- a/src/runtime/stack.go
+++ b/src/runtime/stack.go
@@ -10,7 +10,7 @@ import (
 	"internal/goarch"
 	"internal/goos"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/stkframe.go b/src/runtime/stkframe.go
index 42b69477511..2bab5a3a0ea 100644
--- a/src/runtime/stkframe.go
+++ b/src/runtime/stkframe.go
@@ -7,7 +7,7 @@ package runtime
 import (
 	"internal/abi"
 	"internal/goarch"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/symtab.go b/src/runtime/symtab.go
index 10cdcf9c6ee..f889d669926 100644
--- a/src/runtime/symtab.go
+++ b/src/runtime/symtab.go
@@ -8,7 +8,7 @@ import (
 	"internal/abi"
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/symtabinl_test.go b/src/runtime/symtabinl_test.go
index 3c7cb2e595b..db682e0c9ca 100644
--- a/src/runtime/symtabinl_test.go
+++ b/src/runtime/symtabinl_test.go
@@ -6,8 +6,8 @@ package runtime
 
 import (
 	"internal/abi"
+	"internal/runtime/sys"
 	"internal/stringslite"
-	"runtime/internal/sys"
 )
 
 func XTestInlineUnwinder(t TestingT) {
diff --git a/src/runtime/sys_wasm.go b/src/runtime/sys_wasm.go
index 27f9432bd45..f88b992e9c3 100644
--- a/src/runtime/sys_wasm.go
+++ b/src/runtime/sys_wasm.go
@@ -6,7 +6,7 @@ package runtime
 
 import (
 	"internal/goarch"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/time.go b/src/runtime/time.go
index fc664f49eb8..79f0514c6ee 100644
--- a/src/runtime/time.go
+++ b/src/runtime/time.go
@@ -9,7 +9,7 @@ package runtime
 import (
 	"internal/abi"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/traceallocfree.go b/src/runtime/traceallocfree.go
index e6a2a79c691..985d90eacb9 100644
--- a/src/runtime/traceallocfree.go
+++ b/src/runtime/traceallocfree.go
@@ -8,7 +8,7 @@ package runtime
 
 import (
 	"internal/abi"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 )
 
 // Batch type values for the alloc/free experiment.
diff --git a/src/runtime/traceback.go b/src/runtime/traceback.go
index 03c02f77713..8946ec25284 100644
--- a/src/runtime/traceback.go
+++ b/src/runtime/traceback.go
@@ -8,8 +8,8 @@ import (
 	"internal/abi"
 	"internal/bytealg"
 	"internal/goarch"
+	"internal/runtime/sys"
 	"internal/stringslite"
-	"runtime/internal/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/tracebuf.go b/src/runtime/tracebuf.go
index db4adf53e98..908a63d2739 100644
--- a/src/runtime/tracebuf.go
+++ b/src/runtime/tracebuf.go
@@ -7,7 +7,7 @@
 package runtime
 
 import (
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/traceevent.go b/src/runtime/traceevent.go
index 2a869fb5150..9adbc52fd3d 100644
--- a/src/runtime/traceevent.go
+++ b/src/runtime/traceevent.go
@@ -8,7 +8,7 @@ package runtime
 
 import (
 	"internal/abi"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 )
 
 // Event types in the trace, args are given in square brackets.
diff --git a/src/runtime/tracemap.go b/src/runtime/tracemap.go
index 5b2718c8d68..9efa325c112 100644
--- a/src/runtime/tracemap.go
+++ b/src/runtime/tracemap.go
@@ -19,7 +19,7 @@ import (
 	"internal/cpu"
 	"internal/goarch"
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/src/runtime/traceregion.go b/src/runtime/traceregion.go
index 43eef9c92bb..b45093ec862 100644
--- a/src/runtime/traceregion.go
+++ b/src/runtime/traceregion.go
@@ -8,7 +8,7 @@ package runtime
 
 import (
 	"internal/runtime/atomic"
-	"runtime/internal/sys"
+	"internal/runtime/sys"
 	"unsafe"
 )
 
diff --git a/test/intrinsic.dir/main.go b/test/intrinsic.dir/main.go
index 951aa159d67..21e3eff8056 100644
--- a/test/intrinsic.dir/main.go
+++ b/test/intrinsic.dir/main.go
@@ -6,7 +6,7 @@ package main
 
 import (
 	"fmt"
-	T "runtime/internal/sys"
+	T "internal/runtime/sys"
 )
 
 var A = []uint64{0x0102030405060708, 0x1122334455667788}