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/******************************************************************************
* domain.c
*
*/
#include <xen/config.h>
#include <xen/lib.h>
#include <xen/sched.h>
#include <xen/domain.h>
#include <xen/guest_access.h>
#include <xen/hypercall.h>
#include <compat/vcpu.h>
#define xen_vcpu_set_periodic_timer vcpu_set_periodic_timer
CHECK_vcpu_set_periodic_timer;
#undef xen_vcpu_set_periodic_timer
int compat_vcpu_op(int cmd, int vcpuid, XEN_GUEST_HANDLE_PARAM(void) arg)
{
struct domain *d = current->domain;
struct vcpu *v;
int rc = 0;
if ( (vcpuid < 0) || (vcpuid >= MAX_VIRT_CPUS) )
return -EINVAL;
if ( vcpuid >= d->max_vcpus || (v = d->vcpu[vcpuid]) == NULL )
return -ENOENT;
switch ( cmd )
{
case VCPUOP_initialise:
{
struct compat_vcpu_guest_context *cmp_ctxt;
if ( (cmp_ctxt = xmalloc(struct compat_vcpu_guest_context)) == NULL )
{
rc = -ENOMEM;
break;
}
if ( copy_from_guest(cmp_ctxt, arg, 1) )
{
xfree(cmp_ctxt);
rc = -EFAULT;
break;
}
domain_lock(d);
rc = v->is_initialised ? -EEXIST : arch_set_info_guest(v, cmp_ctxt);
domain_unlock(d);
xfree(cmp_ctxt);
break;
}
case VCPUOP_up:
case VCPUOP_down:
case VCPUOP_is_up:
case VCPUOP_set_periodic_timer:
case VCPUOP_stop_periodic_timer:
case VCPUOP_stop_singleshot_timer:
case VCPUOP_send_nmi:
rc = do_vcpu_op(cmd, vcpuid, arg);
break;
case VCPUOP_get_runstate_info:
{
union {
struct vcpu_runstate_info nat;
struct compat_vcpu_runstate_info cmp;
} runstate;
vcpu_runstate_get(v, &runstate.nat);
xlat_vcpu_runstate_info(&runstate.nat);
if ( copy_to_guest(arg, &runstate.cmp, 1) )
rc = -EFAULT;
break;
}
case VCPUOP_set_singleshot_timer:
{
struct compat_vcpu_set_singleshot_timer cmp;
struct vcpu_set_singleshot_timer *nat;
if ( copy_from_guest(&cmp, arg, 1) )
return -EFAULT;
nat = COMPAT_ARG_XLAT_VIRT_BASE;
XLAT_vcpu_set_singleshot_timer(nat, &cmp);
rc = do_vcpu_op(cmd, vcpuid, guest_handle_from_ptr(nat, void));
break;
}
default:
rc = arch_compat_vcpu_op(cmd, v, arg);
break;
}
return rc;
}
/*
* Local variables:
* mode: C
* c-set-style: "BSD"
* c-basic-offset: 4
* tab-width: 4
* indent-tabs-mode: nil
* End:
*/
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