xen: remove xen_vcpu_init

No need for xen_vcpu_init anymore:

- the RTC emulator doesn't have any periodic timers continuously running
even in absence of guest interactions anymore;

- qemu_dummy_start_vcpu takes care of disabling TCG for us, so we don't
need to do it manually here.

Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>

hw/i386/pc_piix.c

@@ -324,7 +324,6 @@ static void pc_xen_hvm_init(QEMUMachineInitArgs *args)
         hw_error("xen hardware virtual machine initialisation failed");
     }
     pc_init_pci_no_kvmclock(args);
-    xen_vcpu_init();
 }
 #endif
 

include/hw/xen/xen.h

@@ -38,7 +38,6 @@ qemu_irq *xen_interrupt_controller_init(void);
 
 int xen_init(void);
 int xen_hvm_init(void);
-void xen_vcpu_init(void);
 void xenstore_store_pv_console_info(int i, struct CharDriverState *chr);
 
 #if defined(NEED_CPU_H) && !defined(CONFIG_USER_ONLY)

xen-all.c

@@ -574,29 +574,6 @@ void qmp_xen_set_global_dirty_log(bool enable, Error **errp)
     }
 }
 
-/* VCPU Operations, MMIO, IO ring ... */
-
-static void xen_reset_vcpu(void *opaque)
-{
-    CPUState *cpu = opaque;
-
-    cpu->halted = 1;
-}
-
-void xen_vcpu_init(void)
-{
-    if (first_cpu != NULL) {
-        CPUState *cpu = ENV_GET_CPU(first_cpu);
-
-        qemu_register_reset(xen_reset_vcpu, cpu);
-        xen_reset_vcpu(cpu);
-    }
-    /* if rtc_clock is left to default (host_clock), disable it */
-    if (rtc_clock == host_clock) {
-        qemu_clock_enable(rtc_clock, false);
-    }
-}
-
 /* get the ioreq packets from share mem */
 static ioreq_t *cpu_get_ioreq_from_shared_memory(XenIOState *state, int vcpu)
 {