1 files changed, 0 insertions, 244 deletions
diff --git a/pkg/cpuid/cpuid_x86_test.go b/pkg/cpuid/cpuid_x86_test.go
deleted file mode 100644
index 92a2d9f81..000000000
--- a/pkg/cpuid/cpuid_x86_test.go
+++ /dev/null
@@ -1,244 +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.
-
-//go:build 386 || amd64
-// +build 386 amd64
-
-package cpuid
-
-import (
-	"testing"
-)
-
-// These are the default values of various FeatureSet fields.
-const (
-	defaultVendorID = "GenuineIntel"
-
-	// These processor signature defaults are derived from the values
-	// listed in Intel Application Note 485 for i7/Xeon processors.
-	defaultExtFamily  uint8 = 0
-	defaultExtModel   uint8 = 1
-	defaultType       uint8 = 0
-	defaultFamily     uint8 = 0x06
-	defaultModel      uint8 = 0x0a
-	defaultSteppingID uint8 = 0
-)
-
-// newEmptyFeatureSet creates a new FeatureSet with a sensible default model and no features.
-func newEmptyFeatureSet() *FeatureSet {
-	return &FeatureSet{
-		Set:            make(map[Feature]bool),
-		VendorID:       defaultVendorID,
-		ExtendedFamily: defaultExtFamily,
-		ExtendedModel:  defaultExtModel,
-		ProcessorType:  defaultType,
-		Family:         defaultFamily,
-		Model:          defaultModel,
-		SteppingID:     defaultSteppingID,
-	}
-}
-
-var justFPU = &FeatureSet{
-	Set: map[Feature]bool{
-		X86FeatureFPU: true,
-	}}
-
-var justFPUandPAE = &FeatureSet{
-	Set: map[Feature]bool{
-		X86FeatureFPU: true,
-		X86FeaturePAE: true,
-	}}
-
-func TestSubtract(t *testing.T) {
-	if diff := justFPU.Subtract(justFPUandPAE); diff != nil {
-		t.Errorf("Got %v is not subset of %v, want diff (%v) to be nil", justFPU, justFPUandPAE, diff)
-	}
-
-	if justFPUandPAE.Subtract(justFPU) == nil {
-		t.Errorf("Got %v is a subset of %v, want diff to be nil", justFPU, justFPUandPAE)
-	}
-}
-
-// TODO(b/73346484): Run this test on a very old platform, and make sure more
-// bits are enabled than just FPU and PAE. This test currently may not detect
-// if HostFeatureSet gives back junk bits.
-func TestHostFeatureSet(t *testing.T) {
-	hostFeatures := HostFeatureSet()
-	if justFPUandPAE.Subtract(hostFeatures) != nil {
-		t.Errorf("Got invalid feature set %v from HostFeatureSet()", hostFeatures)
-	}
-}
-
-func TestHasFeature(t *testing.T) {
-	if !justFPU.HasFeature(X86FeatureFPU) {
-		t.Errorf("HasFeature failed, %v should contain %v", justFPU, X86FeatureFPU)
-	}
-
-	if justFPU.HasFeature(X86FeatureAVX) {
-		t.Errorf("HasFeature failed, %v should not contain %v", justFPU, X86FeatureAVX)
-	}
-}
-
-// Note: these tests are aware of and abuse internal details of FeatureSets.
-// Users of FeatureSets should not depend on this.
-func TestAdd(t *testing.T) {
-	// Test a basic insertion into the FeatureSet.
-	testFeatures := newEmptyFeatureSet()
-	testFeatures.Add(X86FeatureCLFSH)
-	if len(testFeatures.Set) != 1 {
-		t.Errorf("Got length %v want 1", len(testFeatures.Set))
-	}
-
-	if !testFeatures.HasFeature(X86FeatureCLFSH) {
-		t.Errorf("Add failed, got %v want set with %v", testFeatures, X86FeatureCLFSH)
-	}
-
-	// Test that duplicates are ignored.
-	testFeatures.Add(X86FeatureCLFSH)
-	if len(testFeatures.Set) != 1 {
-		t.Errorf("Got length %v, want 1", len(testFeatures.Set))
-	}
-}
-
-func TestRemove(t *testing.T) {
-	// Try removing the last feature.
-	testFeatures := newEmptyFeatureSet()
-	testFeatures.Add(X86FeatureFPU)
-	testFeatures.Add(X86FeaturePAE)
-	testFeatures.Remove(X86FeaturePAE)
-	if !testFeatures.HasFeature(X86FeatureFPU) || len(testFeatures.Set) != 1 || testFeatures.HasFeature(X86FeaturePAE) {
-		t.Errorf("Remove failed, got %v want %v", testFeatures, justFPU)
-	}
-
-	// Try removing a feature not in the set.
-	testFeatures.Remove(X86FeatureRDRAND)
-	if !testFeatures.HasFeature(X86FeatureFPU) || len(testFeatures.Set) != 1 {
-		t.Errorf("Remove failed, got %v want %v", testFeatures, justFPU)
-	}
-}
-
-func TestFeatureFromString(t *testing.T) {
-	f, ok := FeatureFromString("avx")
-	if f != X86FeatureAVX || !ok {
-		t.Errorf("got %v want avx", f)
-	}
-
-	f, ok = FeatureFromString("bad")
-	if ok {
-		t.Errorf("got %v want nothing", f)
-	}
-}
-
-// This tests function 0 (eax=0), which returns the vendor ID and highest cpuid
-// function reported to be available.
-func TestEmulateIDVendorAndLength(t *testing.T) {
-	testFeatures := newEmptyFeatureSet()
-
-	ax, bx, cx, dx := testFeatures.EmulateID(0, 0)
-	wantEax := uint32(0xd) // Highest supported cpuid function.
-
-	// These magical constants are the characters of "GenuineIntel".
-	// See Intel AN485 for a reference on why they are laid out like this.
-	wantEbx := uint32(0x756e6547)
-	wantEcx := uint32(0x6c65746e)
-	wantEdx := uint32(0x49656e69)
-	if wantEax != ax {
-		t.Errorf("highest function failed, got %x want %x", ax, wantEax)
-	}
-
-	if wantEbx != bx || wantEcx != cx || wantEdx != dx {
-		t.Errorf("vendor string emulation failed, bx:cx:dx, got %x:%x:%x want %x:%x:%x", bx, cx, dx, wantEbx, wantEcx, wantEdx)
-	}
-}
-
-func TestEmulateIDBasicFeatures(t *testing.T) {
-	// Make a minimal test feature set.
-	testFeatures := newEmptyFeatureSet()
-	testFeatures.Add(X86FeatureCLFSH)
-	testFeatures.Add(X86FeatureAVX)
-	testFeatures.CacheLine = 64
-
-	ax, bx, cx, dx := testFeatures.EmulateID(1, 0)
-	ECXAVXBit := uint32(1 << uint(X86FeatureAVX))
-	EDXCLFlushBit := uint32(1 << uint(X86FeatureCLFSH-32)) // We adjust by 32 since it's in block 1.
-
-	if EDXCLFlushBit&dx == 0 || dx&^EDXCLFlushBit != 0 {
-		t.Errorf("EmulateID failed, got feature bits %x want %x", dx, testFeatures.blockMask(1))
-	}
-
-	if ECXAVXBit&cx == 0 || cx&^ECXAVXBit != 0 {
-		t.Errorf("EmulateID failed, got feature bits %x want %x", cx, testFeatures.blockMask(0))
-	}
-
-	// Default signature bits, based on values for i7/Xeon.
-	// See Intel AN485 for information on stepping/model bits.
-	defaultSignature := uint32(0x000106a0)
-	if defaultSignature != ax {
-		t.Errorf("EmulateID stepping emulation failed, got %x want %x", ax, defaultSignature)
-	}
-
-	clflushSizeInfo := uint32(8 << 8)
-	if clflushSizeInfo != bx {
-		t.Errorf("EmulateID bx emulation failed, got %x want %x", bx, clflushSizeInfo)
-	}
-}
-
-func TestEmulateIDExtendedFeatures(t *testing.T) {
-	// Make a minimal test feature set, one bit in each extended feature word.
-	testFeatures := newEmptyFeatureSet()
-	testFeatures.Add(X86FeatureSMEP)
-	testFeatures.Add(X86FeatureAVX512VBMI)
-
-	ax, bx, cx, dx := testFeatures.EmulateID(7, 0)
-	EBXSMEPBit := uint32(1 << uint(X86FeatureSMEP-2*32))      // Adjust by 2*32 since SMEP is a block 2 feature.
-	ECXAVXBit := uint32(1 << uint(X86FeatureAVX512VBMI-3*32)) // We adjust by 3*32 since it's a block 3 feature.
-
-	// Test that the desired bit is set and no other bits are set.
-	if EBXSMEPBit&bx == 0 || bx&^EBXSMEPBit != 0 {
-		t.Errorf("extended feature emulation failed, got feature bits %x want %x", bx, testFeatures.blockMask(2))
-	}
-
-	if ECXAVXBit&cx == 0 || cx&^ECXAVXBit != 0 {
-		t.Errorf("extended feature emulation failed, got feature bits %x want %x", cx, testFeatures.blockMask(3))
-	}
-
-	if ax != 0 || dx != 0 {
-		t.Errorf("extended feature emulation failed, ax:dx, got %x:%x want 0:0", ax, dx)
-	}
-
-	// Check that no subleaves other than 0 do anything.
-	ax, bx, cx, dx = testFeatures.EmulateID(7, 1)
-	if ax != 0 || bx != 0 || cx != 0 || dx != 0 {
-		t.Errorf("extended feature emulation failed, got %x:%x:%x:%x want 0:0", ax, bx, cx, dx)
-	}
-
-}
-
-// Checks that the expected extended features are available via cpuid functions
-// 0x80000000 and up.
-func TestEmulateIDExtended(t *testing.T) {
-	testFeatures := newEmptyFeatureSet()
-	testFeatures.Add(X86FeatureSYSCALL)
-	EDXSYSCALLBit := uint32(1 << uint(X86FeatureSYSCALL-6*32)) // Adjust by 6*32 since SYSCALL is a block 6 feature.
-
-	ax, bx, cx, dx := testFeatures.EmulateID(0x80000000, 0)
-	if ax != 0x80000001 || bx != 0 || cx != 0 || dx != 0 {
-		t.Errorf("EmulateID extended emulation failed, ax:bx:cx:dx, got %x:%x:%x:%x want 0x80000001:0:0:0", ax, bx, cx, dx)
-	}
-
-	_, _, _, dx = testFeatures.EmulateID(0x80000001, 0)
-	if EDXSYSCALLBit&dx == 0 || dx&^EDXSYSCALLBit != 0 {
-		t.Errorf("extended feature emulation failed, got feature bits %x want %x", dx, testFeatures.blockMask(6))
-	}
-}