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Commit 1eb59128 authored by Alex Bennée's avatar Alex Bennée Committed by Christoffer Dall
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kvm: arm64: handle single-step of userspace mmio instructions 



The system state of KVM when using userspace emulation is not complete
until we return into KVM_RUN. To handle mmio related updates we wait
until they have been committed and then schedule our KVM_EXIT_DEBUG.

The kvm_arm_handle_step_debug() helper tells us if we need to return
and sets up the exit_reason for us.

Signed-off-by: default avatarAlex Bennée <alex.bennee@linaro.org>
Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
parent 7226bc2e

virt/kvm/arm/arm.c

+3 −0
Original line number Diff line number Diff line
@@ -628,6 +628,9 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) 
		ret = kvm_handle_mmio_return(vcpu, vcpu->run);

		if (ret)

			return ret;

		if (kvm_arm_handle_step_debug(vcpu, vcpu->run))

			return 0;



	}



	if (run->immediate_exit)