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[PATCH v10 24/59] i386/xen: implement HYPERVISOR_event_channel_op
From: |
David Woodhouse |
Subject: |
[PATCH v10 24/59] i386/xen: implement HYPERVISOR_event_channel_op |
Date: |
Wed, 1 Feb 2023 14:31:13 +0000 |
From: Joao Martins <joao.m.martins@oracle.com>
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>
---
target/i386/kvm/xen-emu.c | 25 +++++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c
index f5c8b6d20c..0bca370ea4 100644
--- a/target/i386/kvm/xen-emu.c
+++ b/target/i386/kvm/xen-emu.c
@@ -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],
--
2.39.0
- [PATCH v10 45/59] i386/xen: Implement HYPERVISOR_grant_table_op and GNTTABOP_[gs]et_verson, (continued)
- [PATCH v10 45/59] i386/xen: Implement HYPERVISOR_grant_table_op and GNTTABOP_[gs]et_verson, David Woodhouse, 2023/02/01
- [PATCH v10 48/59] i386/xen: Reserve Xen special pages for console, xenstore rings, David Woodhouse, 2023/02/01
- [PATCH v10 32/59] hw/xen: Implement EVTCHNOP_bind_virq, David Woodhouse, 2023/02/01
- [PATCH v10 06/59] i386/hvm: Set Xen vCPU ID in KVM, David Woodhouse, 2023/02/01
- [PATCH v10 25/59] i386/xen: implement HVMOP_set_evtchn_upcall_vector, David Woodhouse, 2023/02/01
- [PATCH v10 24/59] i386/xen: implement HYPERVISOR_event_channel_op,
David Woodhouse <=
- [PATCH v10 15/59] i386/xen: add pc_machine_kvm_type to initialize XEN_EMULATE mode, David Woodhouse, 2023/02/01
- [PATCH v10 31/59] hw/xen: Implement EVTCHNOP_unmask, David Woodhouse, 2023/02/01
- [PATCH v10 34/59] hw/xen: Implement EVTCHNOP_send, David Woodhouse, 2023/02/01
- [PATCH v10 17/59] i386/xen: implement HYPERVISOR_memory_op, David Woodhouse, 2023/02/01
- [PATCH v10 04/59] i386/kvm: Add xen-version KVM accelerator property and init KVM Xen support, David Woodhouse, 2023/02/01
- [PATCH v10 22/59] i386/xen: handle VCPUOP_register_vcpu_time_info, David Woodhouse, 2023/02/01
- [PATCH v10 37/59] hw/xen: Implement EVTCHNOP_bind_vcpu, David Woodhouse, 2023/02/01