mirror of https://github.com/xemu-project/xemu.git
i386/xen: implement HYPERVISOR_event_channel_op
Signed-off-by: Joao Martins <joao.m.martins@oracle.com> [dwmw2: Ditch event_channel_op_compat which was never available to HVM guests] Signed-off-by: David Woodhouse <dwmw@amazon.co.uk> Reviewed-by: Paul Durrant <paul@xen.org>
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@ -28,6 +28,7 @@
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#include "hw/xen/interface/memory.h"
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#include "hw/xen/interface/hvm/hvm_op.h"
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#include "hw/xen/interface/vcpu.h"
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#include "hw/xen/interface/event_channel.h"
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#include "xen-compat.h"
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@ -588,6 +589,27 @@ static bool kvm_xen_hcall_vcpu_op(struct kvm_xen_exit *exit, X86CPU *cpu,
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return true;
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}
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static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit,
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int cmd, uint64_t arg)
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{
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int err = -ENOSYS;
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switch (cmd) {
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case EVTCHNOP_init_control:
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case EVTCHNOP_expand_array:
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case EVTCHNOP_set_priority:
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/* We do not support FIFO channels at this point */
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err = -ENOSYS;
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break;
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default:
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return false;
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}
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exit->u.hcall.result = err;
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return true;
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}
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int kvm_xen_soft_reset(void)
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{
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CPUState *cpu;
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@ -694,6 +716,9 @@ static bool do_kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit)
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case __HYPERVISOR_sched_op:
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return kvm_xen_hcall_sched_op(exit, cpu, exit->u.hcall.params[0],
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exit->u.hcall.params[1]);
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case __HYPERVISOR_event_channel_op:
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return kvm_xen_hcall_evtchn_op(exit, exit->u.hcall.params[0],
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exit->u.hcall.params[1]);
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case __HYPERVISOR_vcpu_op:
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return kvm_xen_hcall_vcpu_op(exit, cpu,
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exit->u.hcall.params[0],
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