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From: David Woodhouse <dwmw2@infradead.org>
To: qemu-devel@nongnu.org
Cc: "Paolo Bonzini" <pbonzini@redhat.com>,
	"Paul Durrant" <paul@xen.org>,
	"Joao Martins" <joao.m.martins@oracle.com>,
	"Ankur Arora" <ankur.a.arora@oracle.com>,
	"Philippe Mathieu-Daudé" <philmd@linaro.org>,
	"Thomas Huth" <thuth@redhat.com>,
	"Alex Bennée" <alex.bennee@linaro.org>,
	"Juan Quintela" <quintela@redhat.com>,
	"Dr . David Alan Gilbert" <dgilbert@redhat.com>,
	"Claudio Fontana" <cfontana@suse.de>
Subject: [RFC PATCH v3 34/38] hw/xen: Implement EVTCHNOP_reset
Date: Fri, 16 Dec 2022 00:41:13 +0000	[thread overview]
Message-ID: <20221216004117.862106-35-dwmw2@infradead.org> (raw)
In-Reply-To: <20221216004117.862106-1-dwmw2@infradead.org>

From: David Woodhouse <dwmw@amazon.co.uk>

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
---
 hw/i386/kvm/xen_evtchn.c  | 24 ++++++++++++++++++++++++
 hw/i386/kvm/xen_evtchn.h  |  2 ++
 target/i386/kvm/xen-emu.c | 12 ++++++++++++
 3 files changed, 38 insertions(+)

diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c
index 8cdc26afb7..225d984371 100644
--- a/hw/i386/kvm/xen_evtchn.c
+++ b/hw/i386/kvm/xen_evtchn.c
@@ -643,6 +643,30 @@ static int close_port(XenEvtchnState *s, evtchn_port_t port)
     return 0;
 }
 
+int xen_evtchn_reset_op(struct evtchn_reset *reset)
+{
+    XenEvtchnState *s = xen_evtchn_singleton;
+    int i;
+
+    if (!s) {
+        return -ENOTSUP;
+    }
+
+    if (reset->dom != DOMID_SELF && reset->dom != xen_domid) {
+        return -ESRCH;
+    }
+
+    qemu_mutex_lock(&s->port_lock);
+
+    for (i = 0; i < s->nr_ports; i++) {
+        close_port(s, i);
+    }
+
+    qemu_mutex_unlock(&s->port_lock);
+
+    return 0;
+}
+
 int xen_evtchn_close_op(struct evtchn_close *close)
 {
     XenEvtchnState *s = xen_evtchn_singleton;
diff --git a/hw/i386/kvm/xen_evtchn.h b/hw/i386/kvm/xen_evtchn.h
index 99d5292c1e..b93f534bee 100644
--- a/hw/i386/kvm/xen_evtchn.h
+++ b/hw/i386/kvm/xen_evtchn.h
@@ -22,6 +22,7 @@ struct evtchn_send;
 struct evtchn_alloc_unbound;
 struct evtchn_bind_interdomain;
 struct evtchn_bind_vcpu;
+struct evtchn_reset;
 int xen_evtchn_status_op(struct evtchn_status *status);
 int xen_evtchn_close_op(struct evtchn_close *close);
 int xen_evtchn_unmask_op(struct evtchn_unmask *unmask);
@@ -31,3 +32,4 @@ int xen_evtchn_send_op(struct evtchn_send *send);
 int xen_evtchn_alloc_unbound_op(struct evtchn_alloc_unbound *alloc);
 int xen_evtchn_bind_interdomain_op(struct evtchn_bind_interdomain *interdomain);
 int xen_evtchn_bind_vcpu_op(struct evtchn_bind_vcpu *vcpu);
+int xen_evtchn_reset_op(struct evtchn_reset *reset);
diff --git a/target/i386/kvm/xen-emu.c b/target/i386/kvm/xen-emu.c
index 58fa82682f..055afba627 100644
--- a/target/i386/kvm/xen-emu.c
+++ b/target/i386/kvm/xen-emu.c
@@ -854,6 +854,18 @@ static bool kvm_xen_hcall_evtchn_op(struct kvm_xen_exit *exit, X86CPU *cpu,
         err = xen_evtchn_bind_vcpu_op(&vcpu);
         break;
     }
+    case EVTCHNOP_reset: {
+        struct evtchn_reset reset;
+
+        qemu_build_assert(sizeof(reset) == 2);
+        if (kvm_copy_from_gva(cs, arg, &reset, sizeof(reset))) {
+            err = -EFAULT;
+            break;
+        }
+
+        err = xen_evtchn_reset_op(&reset);
+        break;
+    }
     default:
         return false;
     }
-- 
2.35.3



  parent reply	other threads:[~2022-12-16  0:55 UTC|newest]

Thread overview: 50+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-12-16  0:40 [RFC PATCH v3 00/38] Xen HVM support under KVM David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 01/38] include: import xen public headers David Woodhouse
2022-12-20 14:14   ` Paul Durrant
2022-12-16  0:40 ` [RFC PATCH v3 02/38] xen: add CONFIG_XENFV_MACHINE and CONFIG_XEN_EMU options for Xen emulation David Woodhouse
2022-12-20 14:33   ` Paul Durrant
2022-12-16  0:40 ` [RFC PATCH v3 03/38] xen: Add XEN_DISABLED mode and make it default David Woodhouse
2022-12-20 14:39   ` Paul Durrant
2022-12-20 22:59     ` David Woodhouse
2022-12-21  9:49       ` Paul Durrant
2022-12-16  0:40 ` [RFC PATCH v3 04/38] i386/kvm: Add xen-version machine property and init KVM Xen support David Woodhouse
2022-12-20 14:47   ` Paul Durrant
2022-12-16  0:40 ` [RFC PATCH v3 05/38] i386/kvm: handle Xen HVM cpuid leaves David Woodhouse
2022-12-20 14:58   ` Paul Durrant
2022-12-16  0:40 ` [RFC PATCH v3 06/38] xen-platform: exclude vfio-pci from the PCI platform unplug David Woodhouse
2022-12-20 16:18   ` Paul Durrant
2022-12-16  0:40 ` [RFC PATCH v3 07/38] xen-platform: allow its creation with XEN_EMULATE mode David Woodhouse
2022-12-20 16:19   ` Paul Durrant
2022-12-20 16:29     ` David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 08/38] hw/xen_backend: refactor xen_be_init() David Woodhouse
2022-12-20 16:22   ` Paul Durrant
2022-12-16  0:40 ` [RFC PATCH v3 09/38] i386/xen: handle guest hypercalls David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 10/38] i386/xen: implement HYPERCALL_xen_version David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 11/38] hw/xen: Add xen_overlay device for emulating shared xenheap pages David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 12/38] i386/xen: add pc_machine_kvm_type to initialize XEN_EMULATE mode David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 13/38] i386/xen: manage and save/restore Xen guest long_mode setting David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 14/38] i386/xen: implement HYPERVISOR_memory_op David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 15/38] i386/xen: implement XENMEM_add_to_physmap_batch David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 16/38] i386/xen: implement HYPERVISOR_hvm_op David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 17/38] i386/xen: implement HYPERVISOR_vcpu_op David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 18/38] i386/xen: handle VCPUOP_register_vcpu_info David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 19/38] i386/xen: handle VCPUOP_register_vcpu_time_info David Woodhouse
2022-12-16  0:40 ` [RFC PATCH v3 20/38] i386/xen: handle VCPUOP_register_runstate_memory_area David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 21/38] i386/xen: implement HVMOP_set_evtchn_upcall_vector David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 22/38] i386/xen: HVMOP_set_param / HVM_PARAM_CALLBACK_IRQ David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 23/38] i386/xen: implement HYPERVISOR_event_channel_op David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 24/38] i386/xen: implement HYPERVISOR_sched_op David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 25/38] hw/xen: Implement EVTCHNOP_status David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 26/38] hw/xen: Implement EVTCHNOP_close David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 27/38] hw/xen: Implement EVTCHNOP_unmask David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 28/38] hw/xen: Implement EVTCHNOP_bind_virq David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 29/38] hw/xen: Implement EVTCHNOP_bind_ipi David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 30/38] hw/xen: Implement EVTCHNOP_send David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 31/38] hw/xen: Implement EVTCHNOP_alloc_unbound David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 32/38] hw/xen: Implement EVTCHNOP_bind_interdomain David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 33/38] hw/xen: Implement EVTCHNOP_bind_vcpu David Woodhouse
2022-12-16  0:41 ` David Woodhouse [this message]
2022-12-16  0:41 ` [RFC PATCH v3 35/38] i386/xen: add monitor commands to test event injection David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 36/38] i386/xen: Implement SCHEDOP_poll David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 37/38] hw/xen: Support HVM_PARAM_CALLBACK_TYPE_GSI callback David Woodhouse
2022-12-16  0:41 ` [RFC PATCH v3 38/38] hw/xen: Support HVM_PARAM_CALLBACK_TYPE_PCI_INTX callback David Woodhouse

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