minios: implement minios_hypercall

Signed-off-by: Wei Liu <liuw@liuw.name>
rumpkernel · Jun 24, 2015 · ed7d413 · ed7d413
1 parent cd13e77
commit ed7d413
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diff --git a/platform/xen/xen/hypervisor.c b/platform/xen/xen/hypervisor.c
@@ -120,3 +120,22 @@ inline void minios_clear_evtchn(uint32_t port)
     shared_info_t *s = HYPERVISOR_shared_info;
     synch_clear_bit(port, &s->evtchn_pending[0]);
 }
+
+int minios_hypercall(unsigned op, unsigned long a0,
+		     unsigned long a1, unsigned long a2,
+		     unsigned long a3, unsigned long a4)
+{
+	multicall_entry_t call;
+	int ret;
+
+	call.op = op;
+	call.args[0] = a0;
+	call.args[1] = a1;
+	call.args[2] = a2;
+	call.args[3] = a3;
+	call.args[4] = a4;
+
+	ret = HYPERVISOR_multicall(&call, 1);
+
+	return ret;
+}
diff --git a/platform/xen/xen/include/mini-os/hypervisor.h b/platform/xen/xen/include/mini-os/hypervisor.h
@@ -41,6 +41,9 @@ void minios_do_hypervisor_callback(struct pt_regs *regs);
 void minios_mask_evtchn(uint32_t port);
 void minios_unmask_evtchn(uint32_t port);
 void minios_clear_evtchn(uint32_t port);
+int minios_hypercall(unsigned op, unsigned long a0,
+		     unsigned long a1, unsigned long a2,
+		     unsigned long a3, unsigned long a4);
 
 extern int _minios_in_hypervisor_callback;