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// Copyright 2021 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 mock contains mock CPUs for mitigate tests.
package mock
import "fmt"
// CPU represents data from CPUs that will be mitigated.
type CPU struct {
Name string
VendorID string
Family int
Model int
ModelName string
Bugs string
PhysicalCores int
Cores int
ThreadsPerCore int
}
// CascadeLake2 is a two core Intel CascadeLake machine.
var CascadeLake2 = CPU{
Name: "CascadeLake",
VendorID: "GenuineIntel",
Family: 6,
Model: 85,
ModelName: "Intel(R) Xeon(R) CPU",
Bugs: "spectre_v1 spectre_v2 spec_store_bypass mds swapgs taa",
PhysicalCores: 1,
Cores: 1,
ThreadsPerCore: 2,
}
// CascadeLake4 is a four core Intel CascadeLake machine.
var CascadeLake4 = CPU{
Name: "CascadeLake",
VendorID: "GenuineIntel",
Family: 6,
Model: 85,
ModelName: "Intel(R) Xeon(R) CPU",
Bugs: "spectre_v1 spectre_v2 spec_store_bypass mds swapgs taa",
PhysicalCores: 1,
Cores: 2,
ThreadsPerCore: 2,
}
// Haswell2 is a two core Intel Haswell machine.
var Haswell2 = CPU{
Name: "Haswell",
VendorID: "GenuineIntel",
Family: 6,
Model: 63,
ModelName: "Intel(R) Xeon(R) CPU",
Bugs: "cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs",
PhysicalCores: 1,
Cores: 1,
ThreadsPerCore: 2,
}
// Haswell2core is a 2 core Intel Haswell machine with no hyperthread pairs.
var Haswell2core = CPU{
Name: "Haswell2Physical",
VendorID: "GenuineIntel",
Family: 6,
Model: 63,
ModelName: "Intel(R) Xeon(R) CPU",
Bugs: "cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs",
PhysicalCores: 2,
Cores: 1,
ThreadsPerCore: 1,
}
// AMD8 is an eight core AMD machine.
var AMD8 = CPU{
Name: "AMD",
VendorID: "AuthenticAMD",
Family: 23,
Model: 49,
ModelName: "AMD EPYC 7B12",
Bugs: "sysret_ss_attrs spectre_v1 spectre_v2 spec_store_bypass",
PhysicalCores: 4,
Cores: 1,
ThreadsPerCore: 2,
}
// MakeCPUString makes a string formated like /proc/cpuinfo for each cpuTestCase
func (tc CPU) MakeCPUString() string {
template := `processor : %d
vendor_id : %s
cpu family : %d
model : %d
model name : %s
physical id : %d
core id : %d
cpu cores : %d
bugs : %s
`
ret := ``
for i := 0; i < tc.PhysicalCores; i++ {
for j := 0; j < tc.Cores; j++ {
for k := 0; k < tc.ThreadsPerCore; k++ {
processorNum := (i*tc.Cores+j)*tc.ThreadsPerCore + k
ret += fmt.Sprintf(template,
processorNum, /*processor*/
tc.VendorID, /*vendor_id*/
tc.Family, /*cpu family*/
tc.Model, /*model*/
tc.ModelName, /*model name*/
i, /*physical id*/
j, /*core id*/
tc.Cores*tc.PhysicalCores, /*cpu cores*/
tc.Bugs, /*bugs*/
)
}
}
}
return ret
}
// MakeSysPossibleString makes a string representing a the contents of /sys/devices/system/cpu/possible.
func (tc CPU) MakeSysPossibleString() string {
max := tc.PhysicalCores * tc.Cores * tc.ThreadsPerCore
if max == 1 {
return "0"
}
return fmt.Sprintf("0-%d", max-1)
}
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