// 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_NOTIFY_SIGNAL) tracehook_notify_signal(); 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); 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);