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Diffstat (limited to 'pkg/cpuid/cpuid_parse_test.go')
-rw-r--r--pkg/cpuid/cpuid_parse_test.go142
1 files changed, 0 insertions, 142 deletions
diff --git a/pkg/cpuid/cpuid_parse_test.go b/pkg/cpuid/cpuid_parse_test.go
deleted file mode 100644
index dd9969db4..000000000
--- a/pkg/cpuid/cpuid_parse_test.go
+++ /dev/null
@@ -1,142 +0,0 @@
-// Copyright 2018 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.
-
-package cpuid
-
-import (
- "fmt"
- "io/ioutil"
- "regexp"
- "strconv"
- "strings"
- "syscall"
- "testing"
-)
-
-func kernelVersion() (int, int, error) {
- var u syscall.Utsname
- if err := syscall.Uname(&u); err != nil {
- return 0, 0, err
- }
-
- var r string
- for _, b := range u.Release {
- if b == 0 {
- break
- }
- r += string(b)
- }
-
- s := strings.Split(r, ".")
- if len(s) < 2 {
- return 0, 0, fmt.Errorf("kernel release missing major and minor component: %s", r)
- }
-
- major, err := strconv.Atoi(s[0])
- if err != nil {
- return 0, 0, fmt.Errorf("error parsing major version %q in %q: %v", s[0], r, err)
- }
-
- minor, err := strconv.Atoi(s[1])
- if err != nil {
- return 0, 0, fmt.Errorf("error parsing minor version %q in %q: %v", s[1], r, err)
- }
-
- return major, minor, nil
-}
-
-// TestHostFeatureFlags tests that all features detected by HostFeatureSet are
-// on the host.
-//
-// It does *not* verify that all features reported by the host are detected by
-// HostFeatureSet.
-//
-// i.e., test that HostFeatureSet is a subset of the host features.
-func TestHostFeatureFlags(t *testing.T) {
- cpuinfoBytes, _ := ioutil.ReadFile("/proc/cpuinfo")
- cpuinfo := string(cpuinfoBytes)
- t.Logf("Host cpu info:\n%s", cpuinfo)
-
- major, minor, err := kernelVersion()
- if err != nil {
- t.Fatalf("Unable to parse kernel version: %v", err)
- }
-
- re := regexp.MustCompile(`(?m)^flags\s+: (.*)$`)
- m := re.FindStringSubmatch(cpuinfo)
- if len(m) != 2 {
- t.Fatalf("Unable to extract flags from %q", cpuinfo)
- }
-
- cpuinfoFlags := make(map[string]struct{})
- for _, f := range strings.Split(m[1], " ") {
- cpuinfoFlags[f] = struct{}{}
- }
-
- fs := HostFeatureSet()
-
- // All features have a string and appear in host cpuinfo.
- for f := range fs.Set {
- name := f.flagString(false)
- if name == "" {
- t.Errorf("Non-parsable feature: %v", f)
- }
-
- // Special cases not consistently visible. We don't mind if
- // they are exposed in earlier versions.
- switch {
- // Block 0.
- case f == X86FeatureSDBG && (major < 4 || major == 4 && minor < 3):
- // SDBG only exposed in
- // b1c599b8ff80ea79b9f8277a3f9f36a7b0cfedce (4.3).
- continue
- // Block 2.
- case f == X86FeatureRDT && (major < 4 || major == 4 && minor < 10):
- // RDT only exposed in
- // 4ab1586488cb56ed8728e54c4157cc38646874d9 (4.10).
- continue
- // Block 3.
- case f == X86FeatureAVX512VBMI && (major < 4 || major == 4 && minor < 10):
- // AVX512VBMI only exposed in
- // a8d9df5a509a232a959e4ef2e281f7ecd77810d6 (4.10).
- continue
- case f == X86FeatureUMIP && (major < 4 || major == 4 && minor < 15):
- // UMIP only exposed in
- // 3522c2a6a4f341058b8291326a945e2a2d2aaf55 (4.15).
- continue
- case f == X86FeaturePKU && (major < 4 || major == 4 && minor < 9):
- // PKU only exposed in
- // dfb4a70f20c5b3880da56ee4c9484bdb4e8f1e65 (4.9).
- continue
- // Block 4.
- case f == X86FeatureXSAVES && (major < 4 || major == 4 && minor < 8):
- // XSAVES only exposed in
- // b8be15d588060a03569ac85dc4a0247460988f5b (4.8).
- continue
- // Block 5.
- case f == X86FeaturePERFCTR_LLC && (major < 4 || major == 4 && minor < 14):
- // PERFCTR_LLC renamed in
- // 910448bbed066ab1082b510eef1ae61bb792d854 (4.14).
- continue
- }
-
- hidden := f.flagString(true) == ""
- _, ok := cpuinfoFlags[name]
- if hidden && ok {
- t.Errorf("Unexpectedly hidden flag: %v", f)
- } else if !hidden && !ok {
- t.Errorf("Non-native flag: %v", f)
- }
- }
-}