Move ring0 package.

This allows the package to serve as a general purpose ring0 support package, as
opposed to being bound to specific sentry platforms.

Updates #5039

PiperOrigin-RevId: 355220044

19 files changed, 31 insertions, 31 deletions

diff --git a/pkg/sentry/platform/kvm/BUILD b/pkg/sentry/platform/kvm/BUILD
index 8ce411102..b3290917e 100644
--- a/pkg/sentry/platform/kvm/BUILD
+++ b/pkg/sentry/platform/kvm/BUILD
@@ -45,14 +45,14 @@ go_library(
         "//pkg/cpuid",
         "//pkg/log",
         "//pkg/procid",
+        "//pkg/ring0",
+        "//pkg/ring0/pagetables",
         "//pkg/safecopy",
         "//pkg/seccomp",
         "//pkg/sentry/arch",
         "//pkg/sentry/memmap",
         "//pkg/sentry/platform",
         "//pkg/sentry/platform/interrupt",
-        "//pkg/sentry/platform/ring0",
-        "//pkg/sentry/platform/ring0/pagetables",
         "//pkg/sentry/time",
         "//pkg/sync",
         "//pkg/usermem",
@@ -75,11 +75,11 @@ go_test(
         "requires-kvm",
     ],
     deps = [
+        "//pkg/ring0",
+        "//pkg/ring0/pagetables",
         "//pkg/sentry/arch",
         "//pkg/sentry/platform",
         "//pkg/sentry/platform/kvm/testutil",
-        "//pkg/sentry/platform/ring0",
-        "//pkg/sentry/platform/ring0/pagetables",
         "//pkg/sentry/time",
         "//pkg/usermem",
     ],
@@ -89,6 +89,6 @@ genrule(
     name = "bluepill_impl_amd64",
     srcs = ["bluepill_amd64.s"],
     outs = ["bluepill_impl_amd64.s"],
-    cmd = "(echo -e '// build +amd64\\n' && $(location //pkg/sentry/platform/ring0/gen_offsets) && cat $(SRCS)) > $@",
-    tools = ["//pkg/sentry/platform/ring0/gen_offsets"],
+    cmd = "(echo -e '// build +amd64\\n' && $(location //pkg/ring0/gen_offsets) && cat $(SRCS)) > $@",
+    tools = ["//pkg/ring0/gen_offsets"],
 )
diff --git a/pkg/sentry/platform/kvm/address_space.go b/pkg/sentry/platform/kvm/address_space.go
index af5c5e191..25c21e843 100644
--- a/pkg/sentry/platform/kvm/address_space.go
+++ b/pkg/sentry/platform/kvm/address_space.go
@@ -18,9 +18,9 @@ import (
 	"sync/atomic"
 
 	"gvisor.dev/gvisor/pkg/atomicbitops"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/memmap"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sync"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
diff --git a/pkg/sentry/platform/kvm/bluepill.go b/pkg/sentry/platform/kvm/bluepill.go
index 4b23f7803..2c970162e 100644
--- a/pkg/sentry/platform/kvm/bluepill.go
+++ b/pkg/sentry/platform/kvm/bluepill.go
@@ -19,9 +19,9 @@ import (
 	"reflect"
 	"syscall"
 
+	"gvisor.dev/gvisor/pkg/ring0"
 	"gvisor.dev/gvisor/pkg/safecopy"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
 )
 
 // bluepill enters guest mode.
diff --git a/pkg/sentry/platform/kvm/bluepill_allocator.go b/pkg/sentry/platform/kvm/bluepill_allocator.go
index 9485e1301..1825edc3a 100644
--- a/pkg/sentry/platform/kvm/bluepill_allocator.go
+++ b/pkg/sentry/platform/kvm/bluepill_allocator.go
@@ -17,7 +17,7 @@ package kvm
 import (
 	"fmt"
 
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 )
 
 type allocator struct {
diff --git a/pkg/sentry/platform/kvm/bluepill_amd64.go b/pkg/sentry/platform/kvm/bluepill_amd64.go
index ddc1554d5..83a4766fb 100644
--- a/pkg/sentry/platform/kvm/bluepill_amd64.go
+++ b/pkg/sentry/platform/kvm/bluepill_amd64.go
@@ -19,8 +19,8 @@ package kvm
 import (
 	"syscall"
 
+	"gvisor.dev/gvisor/pkg/ring0"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
 )
 
 var (
diff --git a/pkg/sentry/platform/kvm/bluepill_amd64_unsafe.go b/pkg/sentry/platform/kvm/bluepill_amd64_unsafe.go
index f8ccb7430..0063e947b 100644
--- a/pkg/sentry/platform/kvm/bluepill_amd64_unsafe.go
+++ b/pkg/sentry/platform/kvm/bluepill_amd64_unsafe.go
@@ -20,8 +20,8 @@ import (
 	"syscall"
 	"unsafe"
 
+	"gvisor.dev/gvisor/pkg/ring0"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
 )
 
 // dieArchSetup initializes the state for dieTrampoline.
diff --git a/pkg/sentry/platform/kvm/bluepill_arm64.go b/pkg/sentry/platform/kvm/bluepill_arm64.go
index 1f09813ba..35298135a 100644
--- a/pkg/sentry/platform/kvm/bluepill_arm64.go
+++ b/pkg/sentry/platform/kvm/bluepill_arm64.go
@@ -19,8 +19,8 @@ package kvm
 import (
 	"syscall"
 
+	"gvisor.dev/gvisor/pkg/ring0"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
 )
 
 var (
diff --git a/pkg/sentry/platform/kvm/bluepill_arm64_unsafe.go b/pkg/sentry/platform/kvm/bluepill_arm64_unsafe.go
index 4d912769a..dbbf2a897 100644
--- a/pkg/sentry/platform/kvm/bluepill_arm64_unsafe.go
+++ b/pkg/sentry/platform/kvm/bluepill_arm64_unsafe.go
@@ -20,8 +20,8 @@ import (
 	"syscall"
 	"unsafe"
 
+	"gvisor.dev/gvisor/pkg/ring0"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
 )
 
 // fpsimdPtr returns a fpsimd64 for the given address.
diff --git a/pkg/sentry/platform/kvm/context.go b/pkg/sentry/platform/kvm/context.go
index 17268d127..aeae01dbd 100644
--- a/pkg/sentry/platform/kvm/context.go
+++ b/pkg/sentry/platform/kvm/context.go
@@ -18,10 +18,10 @@ import (
 	"sync/atomic"
 
 	pkgcontext "gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/ring0"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
 	"gvisor.dev/gvisor/pkg/sentry/platform/interrupt"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
 
diff --git a/pkg/sentry/platform/kvm/kvm.go b/pkg/sentry/platform/kvm/kvm.go
index 5979aef97..7bdf57436 100644
--- a/pkg/sentry/platform/kvm/kvm.go
+++ b/pkg/sentry/platform/kvm/kvm.go
@@ -20,9 +20,9 @@ import (
 	"os"
 	"syscall"
 
+	"gvisor.dev/gvisor/pkg/ring0"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sync"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
diff --git a/pkg/sentry/platform/kvm/kvm_amd64.go b/pkg/sentry/platform/kvm/kvm_amd64.go
index 093497bc4..b9ed4a706 100644
--- a/pkg/sentry/platform/kvm/kvm_amd64.go
+++ b/pkg/sentry/platform/kvm/kvm_amd64.go
@@ -18,7 +18,7 @@ package kvm
 
 import (
 	"gvisor.dev/gvisor/pkg/cpuid"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
+	"gvisor.dev/gvisor/pkg/ring0"
 )
 
 // userRegs represents KVM user registers.
diff --git a/pkg/sentry/platform/kvm/kvm_amd64_test.go b/pkg/sentry/platform/kvm/kvm_amd64_test.go
index c0b4fd374..76fc594a0 100644
--- a/pkg/sentry/platform/kvm/kvm_amd64_test.go
+++ b/pkg/sentry/platform/kvm/kvm_amd64_test.go
@@ -19,11 +19,11 @@ package kvm
 import (
 	"testing"
 
+	"gvisor.dev/gvisor/pkg/ring0"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
 	"gvisor.dev/gvisor/pkg/sentry/platform/kvm/testutil"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 )
 
 func TestSegments(t *testing.T) {
diff --git a/pkg/sentry/platform/kvm/kvm_arm64.go b/pkg/sentry/platform/kvm/kvm_arm64.go
index 9db1db4e9..b73340f0e 100644
--- a/pkg/sentry/platform/kvm/kvm_arm64.go
+++ b/pkg/sentry/platform/kvm/kvm_arm64.go
@@ -17,8 +17,8 @@
 package kvm
 
 import (
+	"gvisor.dev/gvisor/pkg/ring0"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
 )
 
 type kvmOneReg struct {
diff --git a/pkg/sentry/platform/kvm/kvm_test.go b/pkg/sentry/platform/kvm/kvm_test.go
index a650877d6..11ca1f0ea 100644
--- a/pkg/sentry/platform/kvm/kvm_test.go
+++ b/pkg/sentry/platform/kvm/kvm_test.go
@@ -22,11 +22,11 @@ import (
 	"testing"
 	"time"
 
+	"gvisor.dev/gvisor/pkg/ring0"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
 	"gvisor.dev/gvisor/pkg/sentry/platform/kvm/testutil"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 	ktime "gvisor.dev/gvisor/pkg/sentry/time"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
diff --git a/pkg/sentry/platform/kvm/machine.go b/pkg/sentry/platform/kvm/machine.go
index e2fffc99b..1ece1b8d8 100644
--- a/pkg/sentry/platform/kvm/machine.go
+++ b/pkg/sentry/platform/kvm/machine.go
@@ -23,8 +23,8 @@ import (
 	"gvisor.dev/gvisor/pkg/atomicbitops"
 	"gvisor.dev/gvisor/pkg/log"
 	"gvisor.dev/gvisor/pkg/procid"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
+	"gvisor.dev/gvisor/pkg/ring0"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 	ktime "gvisor.dev/gvisor/pkg/sentry/time"
 	"gvisor.dev/gvisor/pkg/sync"
 	"gvisor.dev/gvisor/pkg/usermem"
diff --git a/pkg/sentry/platform/kvm/machine_amd64.go b/pkg/sentry/platform/kvm/machine_amd64.go
index 8e03c310d..59c752d73 100644
--- a/pkg/sentry/platform/kvm/machine_amd64.go
+++ b/pkg/sentry/platform/kvm/machine_amd64.go
@@ -24,10 +24,10 @@ import (
 	"syscall"
 
 	"gvisor.dev/gvisor/pkg/cpuid"
+	"gvisor.dev/gvisor/pkg/ring0"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 	ktime "gvisor.dev/gvisor/pkg/sentry/time"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
diff --git a/pkg/sentry/platform/kvm/machine_arm64.go b/pkg/sentry/platform/kvm/machine_arm64.go
index aa2d21748..7d7857067 100644
--- a/pkg/sentry/platform/kvm/machine_arm64.go
+++ b/pkg/sentry/platform/kvm/machine_arm64.go
@@ -17,10 +17,10 @@
 package kvm
 
 import (
+	"gvisor.dev/gvisor/pkg/ring0"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
 
diff --git a/pkg/sentry/platform/kvm/machine_arm64_unsafe.go b/pkg/sentry/platform/kvm/machine_arm64_unsafe.go
index a466acf4d..dca0cdb60 100644
--- a/pkg/sentry/platform/kvm/machine_arm64_unsafe.go
+++ b/pkg/sentry/platform/kvm/machine_arm64_unsafe.go
@@ -23,10 +23,10 @@ import (
 	"syscall"
 	"unsafe"
 
+	"gvisor.dev/gvisor/pkg/ring0"
+	"gvisor.dev/gvisor/pkg/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/sentry/arch"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0/pagetables"
 	"gvisor.dev/gvisor/pkg/usermem"
 )
 
diff --git a/pkg/sentry/platform/kvm/physical_map.go b/pkg/sentry/platform/kvm/physical_map.go
index f7fa2f98d..8bdec93ae 100644
--- a/pkg/sentry/platform/kvm/physical_map.go
+++ b/pkg/sentry/platform/kvm/physical_map.go
@@ -20,7 +20,7 @@ import (
 	"syscall"
 
 	"gvisor.dev/gvisor/pkg/log"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ring0"
+	"gvisor.dev/gvisor/pkg/ring0"
 	"gvisor.dev/gvisor/pkg/usermem"
 )