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/******************************************************************************
* xc_domain.c
*
* API for manipulating and obtaining information on domains.
*
* Copyright (c) 2003, K A Fraser.
*/
#include "xc_private.h"
int xc_domain_create(int xc_handle,
u32 *pdomid)
{
int err;
dom0_op_t op;
op.cmd = DOM0_CREATEDOMAIN;
op.u.createdomain.domain = (domid_t)*pdomid;
if ( (err = do_dom0_op(xc_handle, &op)) != 0 )
return err;
*pdomid = (u16)op.u.createdomain.domain;
return 0;
}
int xc_domain_pause(int xc_handle,
u32 domid)
{
dom0_op_t op;
op.cmd = DOM0_PAUSEDOMAIN;
op.u.pausedomain.domain = (domid_t)domid;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_unpause(int xc_handle,
u32 domid)
{
dom0_op_t op;
op.cmd = DOM0_UNPAUSEDOMAIN;
op.u.unpausedomain.domain = (domid_t)domid;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_destroy(int xc_handle,
u32 domid)
{
dom0_op_t op;
op.cmd = DOM0_DESTROYDOMAIN;
op.u.destroydomain.domain = (domid_t)domid;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_pincpu(int xc_handle,
u32 domid,
int vcpu,
cpumap_t *cpumap)
{
dom0_op_t op;
op.cmd = DOM0_PINCPUDOMAIN;
op.u.pincpudomain.domain = (domid_t)domid;
op.u.pincpudomain.vcpu = vcpu;
op.u.pincpudomain.cpumap = cpumap;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_getinfo(int xc_handle,
u32 first_domid,
unsigned int max_doms,
xc_dominfo_t *info)
{
unsigned int nr_doms;
u32 next_domid = first_domid;
dom0_op_t op;
int rc = 0;
for ( nr_doms = 0; nr_doms < max_doms; nr_doms++ )
{
op.cmd = DOM0_GETDOMAININFO;
op.u.getdomaininfo.domain = (domid_t)next_domid;
if ( (rc = do_dom0_op(xc_handle, &op)) < 0 )
break;
info->domid = (u16)op.u.getdomaininfo.domain;
info->dying = !!(op.u.getdomaininfo.flags & DOMFLAGS_DYING);
info->shutdown = !!(op.u.getdomaininfo.flags & DOMFLAGS_SHUTDOWN);
info->paused = !!(op.u.getdomaininfo.flags & DOMFLAGS_PAUSED);
info->blocked = !!(op.u.getdomaininfo.flags & DOMFLAGS_BLOCKED);
info->running = !!(op.u.getdomaininfo.flags & DOMFLAGS_RUNNING);
info->shutdown_reason =
(op.u.getdomaininfo.flags>>DOMFLAGS_SHUTDOWNSHIFT) &
DOMFLAGS_SHUTDOWNMASK;
if ( info->shutdown && (info->shutdown_reason == SHUTDOWN_crash) )
{
info->shutdown = 0;
info->crashed = 1;
}
info->nr_pages = op.u.getdomaininfo.tot_pages;
info->max_memkb = op.u.getdomaininfo.max_pages<<(PAGE_SHIFT);
info->shared_info_frame = op.u.getdomaininfo.shared_info_frame;
info->cpu_time = op.u.getdomaininfo.cpu_time;
info->vcpus = op.u.getdomaininfo.n_vcpu;
memcpy(&info->vcpu_to_cpu, &op.u.getdomaininfo.vcpu_to_cpu,
sizeof(info->vcpu_to_cpu));
memcpy(&info->cpumap, &op.u.getdomaininfo.cpumap,
sizeof(info->cpumap));
next_domid = (u16)op.u.getdomaininfo.domain + 1;
info++;
}
if( !nr_doms ) return rc;
return nr_doms;
}
int xc_domain_get_vcpu_context(int xc_handle,
u32 domid,
u32 vcpu,
vcpu_guest_context_t *ctxt)
{
int rc, errno_saved;
dom0_op_t op;
op.cmd = DOM0_GETVCPUCONTEXT;
op.u.getvcpucontext.domain = (domid_t)domid;
op.u.getvcpucontext.vcpu = (u16)vcpu;
op.u.getvcpucontext.ctxt = ctxt;
if ( (ctxt != NULL) &&
((rc = mlock(ctxt, sizeof(*ctxt))) != 0) )
return rc;
rc = do_dom0_op(xc_handle, &op);
if ( ctxt != NULL )
{
errno_saved = errno;
(void)munlock(ctxt, sizeof(*ctxt));
errno = errno_saved;
}
if ( rc > 0 )
return -ESRCH;
else
return rc;
}
int xc_shadow_control(int xc_handle,
u32 domid,
unsigned int sop,
unsigned long *dirty_bitmap,
unsigned long pages,
xc_shadow_control_stats_t *stats )
{
int rc;
dom0_op_t op;
op.cmd = DOM0_SHADOW_CONTROL;
op.u.shadow_control.domain = (domid_t)domid;
op.u.shadow_control.op = sop;
op.u.shadow_control.dirty_bitmap = dirty_bitmap;
op.u.shadow_control.pages = pages;
rc = do_dom0_op(xc_handle, &op);
if ( stats )
memcpy(stats, &op.u.shadow_control.stats,
sizeof(xc_shadow_control_stats_t));
return (rc == 0) ? op.u.shadow_control.pages : rc;
}
int xc_domain_setcpuweight(int xc_handle,
u32 domid,
float weight)
{
int sched_id;
int ret;
/* Figure out which scheduler is currently used: */
if ( (ret = xc_sched_id(xc_handle, &sched_id)) != 0 )
return ret;
switch ( sched_id )
{
case SCHED_BVT:
{
u32 mcuadv;
int warpback;
s32 warpvalue;
long long warpl;
long long warpu;
/* Preserve all the scheduling parameters apart
of MCU advance. */
if ( (ret = xc_bvtsched_domain_get(
xc_handle, domid, &mcuadv,
&warpback, &warpvalue, &warpl, &warpu)) != 0 )
return ret;
/* The MCU advance is inverse of the weight.
Default value of the weight is 1, default mcuadv 10.
The scaling factor is therefore 10. */
if ( weight > 0 )
mcuadv = 10 / weight;
ret = xc_bvtsched_domain_set(xc_handle, domid, mcuadv,
warpback, warpvalue, warpl, warpu);
break;
}
}
return ret;
}
int xc_domain_setmaxmem(int xc_handle,
u32 domid,
unsigned int max_memkb)
{
dom0_op_t op;
op.cmd = DOM0_SETDOMAINMAXMEM;
op.u.setdomainmaxmem.domain = (domid_t)domid;
op.u.setdomainmaxmem.max_memkb = max_memkb;
return do_dom0_op(xc_handle, &op);
}
int xc_domain_memory_increase_reservation(int xc_handle,
u32 domid,
unsigned int mem_kb)
{
int err;
err = do_dom_mem_op(xc_handle, MEMOP_increase_reservation, NULL,
mem_kb / 4, 0, domid);
if (err == mem_kb / 4)
return 0;
if (err > 0) {
errno = ENOMEM;
err = -1;
}
return err;
}
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