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[PATCH v9 23/58] i386/xen: implement HYPERVISOR_event_channel_op
From: |
David Woodhouse |
Subject: |
[PATCH v9 23/58] i386/xen: implement HYPERVISOR_event_channel_op |
Date: |
Sat, 28 Jan 2023 08:10:38 +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 8450b162ad..7ef3d8e520 100644
--- a/target/i386/kvm/xen-emu.c
+++ b/target/i386/kvm/xen-emu.c
@@ -28,6 +28,7 @@
#include "standard-headers/xen/memory.h"
#include "standard-headers/xen/hvm/hvm_op.h"
#include "standard-headers/xen/vcpu.h"
+#include "standard-headers/xen/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 v9 09/58] i386/xen: handle guest hypercalls, (continued)
- [PATCH v9 09/58] i386/xen: handle guest hypercalls, David Woodhouse, 2023/01/28
- [PATCH v9 05/58] i386/kvm: handle Xen HVM cpuid leaves, David Woodhouse, 2023/01/28
- [PATCH v9 51/58] hw/xen: Add basic ring handling to xenstore, David Woodhouse, 2023/01/28
- [PATCH v9 21/58] i386/xen: handle VCPUOP_register_vcpu_time_info, David Woodhouse, 2023/01/28
- [PATCH v9 46/58] i386/xen: handle PV timer hypercalls, David Woodhouse, 2023/01/28
- [PATCH v9 24/58] i386/xen: implement HVMOP_set_evtchn_upcall_vector, David Woodhouse, 2023/01/28
- [PATCH v9 29/58] hw/xen: Implement EVTCHNOP_close, David Woodhouse, 2023/01/28
- [PATCH v9 32/58] hw/xen: Implement EVTCHNOP_bind_ipi, David Woodhouse, 2023/01/28
- [PATCH v9 27/58] i386/xen: Add support for Xen event channel delivery to vCPU, David Woodhouse, 2023/01/28
- [PATCH v9 03/58] xen: Add XEN_DISABLED mode and make it default, David Woodhouse, 2023/01/28
- [PATCH v9 23/58] i386/xen: implement HYPERVISOR_event_channel_op,
David Woodhouse <=
- [PATCH v9 48/58] i386/xen: handle HVMOP_get_param, David Woodhouse, 2023/01/28
- [PATCH v9 30/58] hw/xen: Implement EVTCHNOP_unmask, David Woodhouse, 2023/01/28
- [PATCH v9 28/58] hw/xen: Implement EVTCHNOP_status, David Woodhouse, 2023/01/28
- [PATCH v9 02/58] xen: add CONFIG_XEN_BUS and CONFIG_XEN_EMU options for Xen emulation, David Woodhouse, 2023/01/28
- [PATCH v9 41/58] kvm/i386: Add xen-gnttab-max-frames property, David Woodhouse, 2023/01/28
- [PATCH v9 34/58] hw/xen: Implement EVTCHNOP_alloc_unbound, David Woodhouse, 2023/01/28
- [PATCH v9 44/58] i386/xen: Implement HYPERVISOR_grant_table_op and GNTTABOP_[gs]et_verson, David Woodhouse, 2023/01/28
- [PATCH v9 40/58] hw/xen: Support HVM_PARAM_CALLBACK_TYPE_PCI_INTX callback, David Woodhouse, 2023/01/28
- [PATCH v9 50/58] hw/xen: Add xen_xenstore device for xenstore emulation, David Woodhouse, 2023/01/28
- [PATCH v9 37/58] hw/xen: Implement EVTCHNOP_reset, David Woodhouse, 2023/01/28