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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>
This commit is contained in:
Joao Martins 2018-06-28 12:36:19 -04:00 committed by David Woodhouse
parent 5092db87e4
commit 3b06f29b24
1 changed files with 25 additions and 0 deletions
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25
target/i386/kvm/xen-emu.c
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@ -28,6 +28,7 @@
#include "hw/xen/interface/memory.h"
#include "hw/xen/interface/hvm/hvm_op.h"
#include "hw/xen/interface/vcpu.h"
#include "hw/xen/interface/event_channel.h"
#include "xen-compat.h"
@ -588,6 +589,27 @@ static bool kvm_xen_hcall_vcpu_op(struct kvm_xen_exit *exit, X86CPU *cpu,
return true;
}
static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit,
int cmd, uint64_t arg)
{
int err = -ENOSYS;
switch (cmd) {
case EVTCHNOP_init_control:
case EVTCHNOP_expand_array:
case EVTCHNOP_set_priority:
/* We do not support FIFO channels at this point */
err = -ENOSYS;
break;
default:
return false;
}
exit->u.hcall.result = err;
return true;
}
int kvm_xen_soft_reset(void)
{
CPUState *cpu;
@ -694,6 +716,9 @@ static bool do_kvm_xen_handle_exit(X86CPU *cpu, struct kvm_xen_exit *exit)
case __HYPERVISOR_sched_op:
return kvm_xen_hcall_sched_op(exit, cpu, exit->u.hcall.params[0],
exit->u.hcall.params[1]);
case __HYPERVISOR_event_channel_op:
return kvm_xen_hcall_evtchn_op(exit, exit->u.hcall.params[0],
exit->u.hcall.params[1]);
case __HYPERVISOR_vcpu_op:
return kvm_xen_hcall_vcpu_op(exit, cpu,
exit->u.hcall.params[0],