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qemu: allow to create a stopped guest

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When Knobs.Stopped is set, the guest CPU will not be started at startup.

Signed-off-by: Peng Tao <bergwolf@gmail.com>
This commit is contained in:
Peng Tao 2018-05-07 17:38:54 +08:00
parent 283d7df99e
commit 723bc5f3c6
2 changed files with 10 additions and 1 deletions
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7
qemu/qemu.go
View File

@ -1182,6 +1182,9 @@ type Knobs struct {
// Only active when Realtime is set to true // Only active when Realtime is set to true
Mlock bool Mlock bool
// Stopped will not start guest CPU at startup
Stopped bool
// Realtime will enable realtime QEMU // Realtime will enable realtime QEMU
Realtime bool Realtime bool
} }
@ -1521,6 +1524,10 @@ func (config *Config) appendKnobs() {
config.qemuParams = append(config.qemuParams, "mlock=off") config.qemuParams = append(config.qemuParams, "mlock=off")
} }
} }
if config.Knobs.Stopped == true {
config.qemuParams = append(config.qemuParams, "-S")
}
} }
func (config *Config) appendBios() { func (config *Config) appendBios() {

4
qemu/qemu_test.go
View File

@ -388,7 +388,7 @@ func TestAppendEmptyDevice(t *testing.T) {
} }
func TestAppendKnobsAllTrue(t *testing.T) { func TestAppendKnobsAllTrue(t *testing.T) {
var knobsString = "-no-user-config -nodefaults -nographic -daemonize -realtime mlock=on" var knobsString = "-no-user-config -nodefaults -nographic -daemonize -realtime mlock=on -S"
knobs := Knobs{ knobs := Knobs{
NoUserConfig: true, NoUserConfig: true,
NoDefaults: true, NoDefaults: true,
@ -399,6 +399,7 @@ func TestAppendKnobsAllTrue(t *testing.T) {
FileBackedMemShared: true, FileBackedMemShared: true,
Realtime: true, Realtime: true,
Mlock: true, Mlock: true,
Stopped: true,
} }
testAppend(knobs, knobsString, t) testAppend(knobs, knobsString, t)
@ -415,6 +416,7 @@ func TestAppendKnobsAllFalse(t *testing.T) {
FileBackedMemShared: false, FileBackedMemShared: false,
Realtime: false, Realtime: false,
Mlock: false, Mlock: false,
Stopped: false,
} }
testAppend(knobs, knobsString, t) testAppend(knobs, knobsString, t)