Avoid importing platforms from many source files

PiperOrigin-RevId: 256494243

1 files changed, 6 insertions, 14 deletions

diff --git a/runsc/boot/loader.go b/runsc/boot/loader.go
index 7e27d1f49..38e426ee7 100644
--- a/runsc/boot/loader.go
+++ b/runsc/boot/loader.go
@@ -42,8 +42,6 @@ import (
 	"gvisor.dev/gvisor/pkg/sentry/loader"
 	"gvisor.dev/gvisor/pkg/sentry/pgalloc"
 	"gvisor.dev/gvisor/pkg/sentry/platform"
-	"gvisor.dev/gvisor/pkg/sentry/platform/kvm"
-	"gvisor.dev/gvisor/pkg/sentry/platform/ptrace"
 	"gvisor.dev/gvisor/pkg/sentry/sighandling"
 	slinux "gvisor.dev/gvisor/pkg/sentry/syscalls/linux"
 	"gvisor.dev/gvisor/pkg/sentry/time"
@@ -59,6 +57,7 @@ import (
 	"gvisor.dev/gvisor/pkg/tcpip/transport/tcp"
 	"gvisor.dev/gvisor/pkg/tcpip/transport/udp"
 	"gvisor.dev/gvisor/runsc/boot/filter"
+	_ "gvisor.dev/gvisor/runsc/boot/platforms" // register all platforms.
 	"gvisor.dev/gvisor/runsc/specutils"
 
 	// Include supported socket providers.
@@ -416,19 +415,12 @@ func (l *Loader) Destroy() {
 }
 
 func createPlatform(conf *Config, deviceFile *os.File) (platform.Platform, error) {
-	switch conf.Platform {
-	case PlatformPtrace:
-		log.Infof("Platform: ptrace")
-		return ptrace.New()
-	case PlatformKVM:
-		log.Infof("Platform: kvm")
-		if deviceFile == nil {
-			return nil, fmt.Errorf("kvm device file must be provided")
-		}
-		return kvm.New(deviceFile)
-	default:
-		return nil, fmt.Errorf("invalid platform %v", conf.Platform)
+	p, err := platform.Lookup(conf.Platform)
+	if err != nil {
+		panic(fmt.Sprintf("invalid platform %v: %v", conf.Platform, err))
 	}
+	log.Infof("Platform: %s", conf.Platform)
+	return p.New(deviceFile)
 }
 
 func createMemoryFile() (*pgalloc.MemoryFile, error) {