Enable pkg/cpuid support on arm64.

Fixes #1255

Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I8614e6f3ee321c2989567e4e712aa8f28cc9db14

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)
-		}
-	}
-}