diff options
| author | lubinszARM <34124929+lubinszARM@users.noreply.github.com> | 2019-12-13 17:09:55 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-12-13 17:11:23 -0800 |
| commit | 6b424530397e5100b08628efe8f6c62178daa70b (patch) | |
| tree | 86e0334547d5a5395b81680435cd5feecf36c76e /pkg/sentry/platform/kvm/bluepill_amd64.go | |
| parent | ad80dcf47077a1938631fe36f6b406256f3f3f4f (diff) | |
enable kvm to support arm64
There are 4 jobs were finished in this package:
1, Virtual machine initialization.
2, Bluepill implementation.
3, Move ring0.Vectors() into the address with 11-bits alignment.
4, Basic support for "SwitchToUser".
Signed-off-by: Bin Lu <bin.lu@arm.com>
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/919 from lubinszARM:pr_kvm eedea52db451bf62722759009a9f14c54a69c55f
PiperOrigin-RevId: 285501256
Diffstat (limited to 'pkg/sentry/platform/kvm/bluepill_amd64.go')
| -rw-r--r-- | pkg/sentry/platform/kvm/bluepill_amd64.go | 20 |
1 files changed, 2 insertions, 18 deletions
diff --git a/pkg/sentry/platform/kvm/bluepill_amd64.go b/pkg/sentry/platform/kvm/bluepill_amd64.go index 421c88220..133c2203d 100644 --- a/pkg/sentry/platform/kvm/bluepill_amd64.go +++ b/pkg/sentry/platform/kvm/bluepill_amd64.go @@ -24,26 +24,10 @@ import ( ) var ( - // bounceSignal is the signal used for bouncing KVM. - // - // We use SIGCHLD because it is not masked by the runtime, and - // it will be ignored properly by other parts of the kernel. - bounceSignal = syscall.SIGCHLD - - // bounceSignalMask has only bounceSignal set. - bounceSignalMask = uint64(1 << (uint64(bounceSignal) - 1)) - - // bounce is the interrupt vector used to return to the kernel. - bounce = uint32(ring0.VirtualizationException) + // The action for bluepillSignal is changed by sigaction(). + bluepillSignal = syscall.SIGSEGV ) -// redpill on amd64 invokes a syscall with -1. -// -//go:nosplit -func redpill() { - syscall.RawSyscall(^uintptr(0), 0, 0, 0) -} - // bluepillArchEnter is called during bluepillEnter. // //go:nosplit |