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-rw-r--r--pkg/sentry/platform/kvm/BUILD1
-rw-r--r--pkg/sentry/platform/kvm/kvm_arm64_test.go32
-rw-r--r--pkg/sentry/platform/kvm/testutil/testutil_arm64.go5
-rw-r--r--pkg/sentry/platform/kvm/testutil/testutil_arm64.s16
4 files changed, 54 insertions, 0 deletions
diff --git a/pkg/sentry/platform/kvm/BUILD b/pkg/sentry/platform/kvm/BUILD
index 3970dd81d..40fe4228a 100644
--- a/pkg/sentry/platform/kvm/BUILD
+++ b/pkg/sentry/platform/kvm/BUILD
@@ -63,6 +63,7 @@ go_test(
name = "kvm_test",
srcs = [
"kvm_amd64_test.go",
+ "kvm_arm64_test.go",
"kvm_test.go",
"virtual_map_test.go",
],
diff --git a/pkg/sentry/platform/kvm/kvm_arm64_test.go b/pkg/sentry/platform/kvm/kvm_arm64_test.go
new file mode 100644
index 000000000..d34553a96
--- /dev/null
+++ b/pkg/sentry/platform/kvm/kvm_arm64_test.go
@@ -0,0 +1,32 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// +build arm64
+
+package kvm
+
+import (
+ "testing"
+
+ "gvisor.dev/gvisor/pkg/sentry/platform/kvm/testutil"
+)
+
+func TestKernelTLS(t *testing.T) {
+ bluepillTest(t, func(c *vCPU) {
+ if !testutil.TLSWorks() {
+ t.Errorf("tls does not work, and it should!")
+ }
+ })
+}
+
diff --git a/pkg/sentry/platform/kvm/testutil/testutil_arm64.go b/pkg/sentry/platform/kvm/testutil/testutil_arm64.go
index 4dad877ba..c5235ca9d 100644
--- a/pkg/sentry/platform/kvm/testutil/testutil_arm64.go
+++ b/pkg/sentry/platform/kvm/testutil/testutil_arm64.go
@@ -23,6 +23,11 @@ import (
"gvisor.dev/gvisor/pkg/sentry/arch"
)
+// TLSWorks is a tls test.
+//
+// It returns true or false.
+func TLSWorks() bool
+
// SetTestTarget sets the rip appropriately.
func SetTestTarget(regs *arch.Registers, fn func()) {
regs.Pc = uint64(reflect.ValueOf(fn).Pointer())
diff --git a/pkg/sentry/platform/kvm/testutil/testutil_arm64.s b/pkg/sentry/platform/kvm/testutil/testutil_arm64.s
index 6caf7282d..7348c29a5 100644
--- a/pkg/sentry/platform/kvm/testutil/testutil_arm64.s
+++ b/pkg/sentry/platform/kvm/testutil/testutil_arm64.s
@@ -50,6 +50,22 @@ TEXT ·SpinLoop(SB),NOSPLIT,$0
start:
B start
+TEXT ·TLSWorks(SB),NOSPLIT,$0-8
+ NO_LOCAL_POINTERS
+ MOVD $0x6789, R5
+ MSR R5, TPIDR_EL0
+ MOVD $SYS_GETPID, R8 // getpid
+ SVC
+ MRS TPIDR_EL0, R6
+ CMP R5, R6
+ BNE isNaN
+ MOVD $1, R0
+ MOVD R0, ret+0(FP)
+ RET
+isNaN:
+ MOVD $0, ret+0(FP)
+ RET
+
TEXT ·FloatingPointWorks(SB),NOSPLIT,$0-8
NO_LOCAL_POINTERS
// gc will touch fpsimd, so we should test it.