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[PATCH v13 24/60] i386/xen: implement HYPERVISOR_event_channel_op
From: |
David Woodhouse |
Subject: |
[PATCH v13 24/60] i386/xen: implement HYPERVISOR_event_channel_op |
Date: |
Thu, 23 Feb 2023 12:45:37 +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 v13 54/60] i386/xen: Implement HYPERVISOR_physdev_op, (continued)
- [PATCH v13 54/60] i386/xen: Implement HYPERVISOR_physdev_op, David Woodhouse, 2023/02/23
- [PATCH v13 17/60] i386/xen: implement HYPERVISOR_memory_op, David Woodhouse, 2023/02/23
- [PATCH v13 55/60] hw/xen: Implement emulated PIRQ hypercall support, David Woodhouse, 2023/02/23
- [PATCH v13 12/60] i386/xen: Implement SCHEDOP_poll and SCHEDOP_yield, David Woodhouse, 2023/02/23
- [PATCH v13 15/60] i386/xen: add pc_machine_kvm_type to initialize XEN_EMULATE mode, David Woodhouse, 2023/02/23
- [PATCH v13 44/60] hw/xen: Support mapping grant frames, David Woodhouse, 2023/02/23
- [PATCH v13 56/60] hw/xen: Support GSI mapping to PIRQ, David Woodhouse, 2023/02/23
- [PATCH v13 33/60] hw/xen: Implement EVTCHNOP_bind_ipi, David Woodhouse, 2023/02/23
- [PATCH v13 48/60] i386/xen: Reserve Xen special pages for console, xenstore rings, David Woodhouse, 2023/02/23
- [PATCH v13 46/60] hw/xen: Implement GNTTABOP_query_size, David Woodhouse, 2023/02/23
- [PATCH v13 24/60] i386/xen: implement HYPERVISOR_event_channel_op,
David Woodhouse <=
- [PATCH v13 18/60] i386/xen: implement XENMEM_add_to_physmap_batch, David Woodhouse, 2023/02/23
- [PATCH v13 03/60] xen: Add XEN_DISABLED mode and make it default, David Woodhouse, 2023/02/23
- [PATCH v13 11/60] i386/xen: implement HYPERVISOR_sched_op, SCHEDOP_shutdown, David Woodhouse, 2023/02/23
- [PATCH v13 51/60] hw/xen: Add xen_xenstore device for xenstore emulation, David Woodhouse, 2023/02/23
- [PATCH v13 28/60] i386/xen: Add support for Xen event channel delivery to vCPU, David Woodhouse, 2023/02/23
- [PATCH v13 52/60] hw/xen: Add basic ring handling to xenstore, David Woodhouse, 2023/02/23
- [PATCH v13 19/60] i386/xen: implement HYPERVISOR_hvm_op, David Woodhouse, 2023/02/23
- Re: [PATCH v13 00/60] Xen HVM support under KVM, David Woodhouse, 2023/02/24