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- // SPDX-License-Identifier: GPL-2.0
- #include <linux/entry-kvm.h>
- #include <linux/kvm_host.h>
- static int xfer_to_guest_mode_work(struct kvm_vcpu *vcpu, unsigned long ti_work)
- {
- do {
- int ret;
- if (ti_work & _TIF_SIGPENDING) {
- kvm_handle_signal_exit(vcpu);
- return -EINTR;
- }
- if (ti_work & _TIF_NEED_RESCHED)
- schedule();
- if (ti_work & _TIF_NOTIFY_RESUME) {
- tracehook_notify_resume(NULL);
- rseq_handle_notify_resume(NULL, NULL);
- }
- ret = arch_xfer_to_guest_mode_handle_work(vcpu, ti_work);
- if (ret)
- return ret;
- ti_work = READ_ONCE(current_thread_info()->flags);
- } while (ti_work & XFER_TO_GUEST_MODE_WORK || need_resched());
- return 0;
- }
- int xfer_to_guest_mode_handle_work(struct kvm_vcpu *vcpu)
- {
- unsigned long ti_work;
- /*
- * This is invoked from the outer guest loop with interrupts and
- * preemption enabled.
- *
- * KVM invokes xfer_to_guest_mode_work_pending() with interrupts
- * disabled in the inner loop before going into guest mode. No need
- * to disable interrupts here.
- */
- ti_work = READ_ONCE(current_thread_info()->flags);
- if (!(ti_work & XFER_TO_GUEST_MODE_WORK))
- return 0;
- return xfer_to_guest_mode_work(vcpu, ti_work);
- }
- EXPORT_SYMBOL_GPL(xfer_to_guest_mode_handle_work);
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