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157b4d954c81f83409c19ed650c893eb38f8e376
xen/tools/libxc/xenctrl.h
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Tim Deegan f9f9daee79 Tools: libxc side for setting up the mem sharing ring 
This ring is used to report failed allocations in the unshare path.

Signed-off-by: Andres Lagar-Cavilla <andres@lagarcavilla.org>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Committed-by: Tim Deegan <tim@xen.org>
2012-03-08 16:40:05 +00:00

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/******************************************************************************
* xenctrl.h
*
* A library for low-level access to the Xen control interfaces.
*
* Copyright (c) 2003-2004, K A Fraser.
*
* xc_gnttab functions:
* Copyright (c) 2007-2008, D G Murray <Derek.Murray@cl.cam.ac.uk>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef XENCTRL_H
#define XENCTRL_H
/* Tell the Xen public headers we are a user-space tools build. */
#ifndef __XEN_TOOLS__
#define __XEN_TOOLS__ 1
#endif
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <xen/xen.h>
#include <xen/domctl.h>
#include <xen/physdev.h>
#include <xen/sysctl.h>
#include <xen/version.h>
#include <xen/event_channel.h>
#include <xen/sched.h>
#include <xen/memory.h>
#include <xen/grant_table.h>
#include <xen/hvm/params.h>
#include <xen/xsm/flask_op.h>
#include <xen/tmem.h>
#include "xentoollog.h"
#if defined(__i386__) || defined(__x86_64__)
#include <xen/foreign/x86_32.h>
#include <xen/foreign/x86_64.h>
#include <xen/arch-x86/xen-mca.h>
#endif
#ifdef __ia64__
#define XC_PAGE_SHIFT 14
#else
#define XC_PAGE_SHIFT 12
#endif
#define XC_PAGE_SIZE (1UL << XC_PAGE_SHIFT)
#define XC_PAGE_MASK (~(XC_PAGE_SIZE-1))
#define INVALID_MFN (~0UL)
/*
* DEFINITIONS FOR CPU BARRIERS
*/
#define xen_barrier() asm volatile ( "" : : : "memory")
#if defined(__i386__)
#define xen_mb() asm volatile ( "lock; addl $0,0(%%esp)" : : : "memory" )
#define xen_rmb() xen_barrier()
#define xen_wmb() xen_barrier()
#elif defined(__x86_64__)
#define xen_mb() asm volatile ( "mfence" : : : "memory")
#define xen_rmb() xen_barrier()
#define xen_wmb() xen_barrier()
#elif defined(__ia64__)
#define xen_mb() asm volatile ("mf" ::: "memory")
#define xen_rmb() asm volatile ("mf" ::: "memory")
#define xen_wmb() asm volatile ("mf" ::: "memory")
#elif defined(__arm__)
#define xen_mb() asm volatile ("dmb" : : : "memory")
#define xen_rmb() asm volatile ("dmb" : : : "memory")
#define xen_wmb() asm volatile ("dmb" : : : "memory")
#else
#error "Define barriers"
#endif
#define XENCTRL_HAS_XC_INTERFACE 1
/* In Xen 4.0 and earlier, xc_interface_open and xc_evtchn_open would
* both return ints being the file descriptor. In 4.1 and later, they
* return an xc_interface* and xc_evtchn*, respectively - ie, a
* pointer to an opaque struct. This #define is provided in 4.1 and
* later, allowing out-of-tree callers to more easily distinguish
* between, and be compatible with, both versions.
*/
/*
* GENERAL
*
* Unless otherwise specified, each function here returns zero or a
* non-null pointer on success; or in case of failure, sets errno and
* returns -1 or a null pointer.
*
* Unless otherwise specified, errors result in a call to the error
* handler function, which by default prints a message to the
* FILE* passed as the caller_data, which by default is stderr.
* (This is described below as "logging errors".)
*
* The error handler can safely trash errno, as libxc saves it across
* the callback.
*/
typedef struct xc_interface_core xc_interface;
typedef struct xc_interface_core xc_evtchn;
typedef struct xc_interface_core xc_gnttab;
typedef struct xc_interface_core xc_gntshr;
typedef enum xc_error_code xc_error_code;
/*
* INITIALIZATION FUNCTIONS
*/
/**
* This function opens a handle to the hypervisor interface. This function can
* be called multiple times within a single process. Multiple processes can
* have an open hypervisor interface at the same time.
*
* Each call to this function should have a corresponding call to
* xc_interface_close().
*
* This function can fail if the caller does not have superuser permission or
* if a Xen-enabled kernel is not currently running.
*
* @return a handle to the hypervisor interface
*/
xc_interface *xc_interface_open(xentoollog_logger *logger,
xentoollog_logger *dombuild_logger,
unsigned open_flags);
/* if logger==NULL, will log to stderr
* if dombuild_logger=NULL, will log to a file
*/
/*
* Note: if XC_OPENFLAG_NON_REENTRANT is passed then libxc must not be
* called reentrantly and the calling application is responsible for
* providing mutual exclusion surrounding all libxc calls itself.
*
* In particular xc_{get,clear}_last_error only remain valid for the
* duration of the critical section containing the call which failed.
*/
enum xc_open_flags {
XC_OPENFLAG_DUMMY = 1<<0, /* do not actually open a xenctrl interface */
XC_OPENFLAG_NON_REENTRANT = 1<<1, /* assume library is only every called from a single thread */
};
/**
* This function closes an open hypervisor interface.
*
* This function can fail if the handle does not represent an open interface or
* if there were problems closing the interface. In the latter case
* the interface is still closed.
*
* @parm xch a handle to an open hypervisor interface
* @return 0 on success, -1 otherwise.
*/
int xc_interface_close(xc_interface *xch);
/**
* Query the active OS interface (i.e. that which would be returned by
* xc_interface_open) to find out if it is fake (i.e. backends onto
* something other than an actual Xen hypervisor).
*
* @return 0 is "real", >0 if fake, -1 on error.
*/
int xc_interface_is_fake(void);
/*
* HYPERCALL SAFE MEMORY BUFFER
*
* Ensure that memory which is passed to a hypercall has been
* specially allocated in order to be safe to access from the
* hypervisor.
*
* Each user data pointer is shadowed by an xc_hypercall_buffer data
* structure. You should never define an xc_hypercall_buffer type
* directly, instead use the DECLARE_HYPERCALL_BUFFER* macros below.
*
* The strucuture should be considered opaque and all access should be
* via the macros and helper functions defined below.
*
* Once the buffer is declared the user is responsible for explicitly
* allocating and releasing the memory using
* xc_hypercall_buffer_alloc(_pages) and
* xc_hypercall_buffer_free(_pages).
*
* Once the buffer has been allocated the user can initialise the data
* via the normal pointer. The xc_hypercall_buffer structure is
* transparently referenced by the helper macros (such as
* xen_set_guest_handle) in order to check at compile time that the
* correct type of memory is being used.
*/
struct xc_hypercall_buffer {
/* Hypercall safe memory buffer. */
void *hbuf;
/*
* Reference to xc_hypercall_buffer passed as argument to the
* current function.
*/
struct xc_hypercall_buffer *param_shadow;
/*
* Direction of copy for bounce buffering.
*/
int dir;
/* Used iff dir != 0. */
void *ubuf;
size_t sz;
};
typedef struct xc_hypercall_buffer xc_hypercall_buffer_t;
/*
* Construct the name of the hypercall buffer for a given variable.
* For internal use only
*/
#define XC__HYPERCALL_BUFFER_NAME(_name) xc__hypercall_buffer_##_name
/*
* Returns the hypercall_buffer associated with a variable.
*/
#define HYPERCALL_BUFFER(_name) \
({ xc_hypercall_buffer_t _val1; \
typeof(XC__HYPERCALL_BUFFER_NAME(_name)) *_val2 = &XC__HYPERCALL_BUFFER_NAME(_name); \
(void)(&_val1 == _val2); \
(_val2)->param_shadow ? (_val2)->param_shadow : (_val2); \
})
#define HYPERCALL_BUFFER_INIT_NO_BOUNCE .dir = 0, .sz = 0, .ubuf = (void *)-1
/*
* Defines a hypercall buffer and user pointer with _name of _type.
*
* The user accesses the data as normal via _name which will be
* transparently converted to the hypercall buffer as necessary.
*/
#define DECLARE_HYPERCALL_BUFFER(_type, _name) \
_type *_name = NULL; \
xc_hypercall_buffer_t XC__HYPERCALL_BUFFER_NAME(_name) = { \
.hbuf = NULL, \
.param_shadow = NULL, \
HYPERCALL_BUFFER_INIT_NO_BOUNCE \
}
/*
* Declare the necessary data structure to allow a hypercall buffer
* passed as an argument to a function to be used in the normal way.
*/
#define DECLARE_HYPERCALL_BUFFER_ARGUMENT(_name) \
xc_hypercall_buffer_t XC__HYPERCALL_BUFFER_NAME(_name) = { \
.hbuf = (void *)-1, \
.param_shadow = _name, \
HYPERCALL_BUFFER_INIT_NO_BOUNCE \
}
/*
* Get the hypercall buffer data pointer in a form suitable for use
* directly as a hypercall argument.
*/
#define HYPERCALL_BUFFER_AS_ARG(_name) \
({ xc_hypercall_buffer_t _val1; \
typeof(XC__HYPERCALL_BUFFER_NAME(_name)) *_val2 = HYPERCALL_BUFFER(_name); \
(void)(&_val1 == _val2); \
(unsigned long)(_val2)->hbuf; \
})
/*
* Set a xen_guest_handle in a type safe manner, ensuring that the
* data pointer has been correctly allocated.
*/
#undef set_xen_guest_handle
#define set_xen_guest_handle(_hnd, _val) \
do { \
xc_hypercall_buffer_t _val1; \
typeof(XC__HYPERCALL_BUFFER_NAME(_val)) *_val2 = HYPERCALL_BUFFER(_val); \
(void) (&_val1 == _val2); \
set_xen_guest_handle_raw(_hnd, (_val2)->hbuf); \
} while (0)
/* Use with set_xen_guest_handle in place of NULL */
extern xc_hypercall_buffer_t XC__HYPERCALL_BUFFER_NAME(HYPERCALL_BUFFER_NULL);
/*
* Allocate and free hypercall buffers with byte granularity.
*/
void *xc__hypercall_buffer_alloc(xc_interface *xch, xc_hypercall_buffer_t *b, size_t size);
#define xc_hypercall_buffer_alloc(_xch, _name, _size) xc__hypercall_buffer_alloc(_xch, HYPERCALL_BUFFER(_name), _size)
void xc__hypercall_buffer_free(xc_interface *xch, xc_hypercall_buffer_t *b);
#define xc_hypercall_buffer_free(_xch, _name) xc__hypercall_buffer_free(_xch, HYPERCALL_BUFFER(_name))
/*
* Allocate and free hypercall buffers with page alignment.
*/
void *xc__hypercall_buffer_alloc_pages(xc_interface *xch, xc_hypercall_buffer_t *b, int nr_pages);
#define xc_hypercall_buffer_alloc_pages(_xch, _name, _nr) xc__hypercall_buffer_alloc_pages(_xch, HYPERCALL_BUFFER(_name), _nr)
void xc__hypercall_buffer_free_pages(xc_interface *xch, xc_hypercall_buffer_t *b, int nr_pages);
#define xc_hypercall_buffer_free_pages(_xch, _name, _nr) xc__hypercall_buffer_free_pages(_xch, HYPERCALL_BUFFER(_name), _nr)
/*
* CPUMAP handling
*/
typedef uint8_t *xc_cpumap_t;
/* return maximum number of cpus the hypervisor supports */
int xc_get_max_cpus(xc_interface *xch);
/* return array size for cpumap */
int xc_get_cpumap_size(xc_interface *xch);
/* allocate a cpumap */
xc_cpumap_t xc_cpumap_alloc(xc_interface *xch);
/*
* DOMAIN DEBUGGING FUNCTIONS
*/
typedef struct xc_core_header {
unsigned int xch_magic;
unsigned int xch_nr_vcpus;
unsigned int xch_nr_pages;
unsigned int xch_ctxt_offset;
unsigned int xch_index_offset;
unsigned int xch_pages_offset;
} xc_core_header_t;
#define XC_CORE_MAGIC 0xF00FEBED
#define XC_CORE_MAGIC_HVM 0xF00FEBEE
/*
* DOMAIN MANAGEMENT FUNCTIONS
*/
typedef struct xc_dominfo {
uint32_t domid;
uint32_t ssidref;
unsigned int dying:1, crashed:1, shutdown:1,
paused:1, blocked:1, running:1,
hvm:1, debugged:1;
unsigned int shutdown_reason; /* only meaningful if shutdown==1 */
unsigned long nr_pages; /* current number, not maximum */
unsigned long nr_shared_pages;
unsigned long nr_paged_pages;
unsigned long shared_info_frame;
uint64_t cpu_time;
unsigned long max_memkb;
unsigned int nr_online_vcpus;
unsigned int max_vcpu_id;
xen_domain_handle_t handle;
unsigned int cpupool;
} xc_dominfo_t;
typedef xen_domctl_getdomaininfo_t xc_domaininfo_t;
typedef union
{
#if defined(__i386__) || defined(__x86_64__)
vcpu_guest_context_x86_64_t x64;
vcpu_guest_context_x86_32_t x32;
#endif
vcpu_guest_context_t c;
} vcpu_guest_context_any_t;
typedef union
{
#if defined(__i386__) || defined(__x86_64__)
shared_info_x86_64_t x64;
shared_info_x86_32_t x32;
#endif
shared_info_t s;
} shared_info_any_t;
typedef union
{
#if defined(__i386__) || defined(__x86_64__)
start_info_x86_64_t x64;
start_info_x86_32_t x32;
#endif
start_info_t s;
} start_info_any_t;
int xc_domain_create(xc_interface *xch,
uint32_t ssidref,
xen_domain_handle_t handle,
uint32_t flags,
uint32_t *pdomid);
/* Functions to produce a dump of a given domain
* xc_domain_dumpcore - produces a dump to a specified file
* xc_domain_dumpcore_via_callback - produces a dump, using a specified
* callback function
*/
int xc_domain_dumpcore(xc_interface *xch,
uint32_t domid,
const char *corename);
/* Define the callback function type for xc_domain_dumpcore_via_callback.
*
* This function is called by the coredump code for every "write",
* and passes an opaque object for the use of the function and
* created by the caller of xc_domain_dumpcore_via_callback.
*/
typedef int (dumpcore_rtn_t)(xc_interface *xch,
void *arg, char *buffer, unsigned int length);
int xc_domain_dumpcore_via_callback(xc_interface *xch,
uint32_t domid,
void *arg,
dumpcore_rtn_t dump_rtn);
/*
* This function sets the maximum number of vcpus that a domain may create.
*
* @parm xch a handle to an open hypervisor interface.
* @parm domid the domain id in which vcpus are to be created.
* @parm max the maximum number of vcpus that the domain may create.
* @return 0 on success, -1 on failure.
*/
int xc_domain_max_vcpus(xc_interface *xch,
uint32_t domid,
unsigned int max);
/**
* This function pauses a domain. A paused domain still exists in memory
* however it does not receive any timeslices from the hypervisor.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id to pause
* @return 0 on success, -1 on failure.
*/
int xc_domain_pause(xc_interface *xch,
uint32_t domid);
/**
* This function unpauses a domain. The domain should have been previously
* paused.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id to unpause
* return 0 on success, -1 on failure
*/
int xc_domain_unpause(xc_interface *xch,
uint32_t domid);
/**
* This function will destroy a domain. Destroying a domain removes the domain
* completely from memory. This function should be called after sending the
* domain a SHUTDOWN control message to free up the domain resources.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id to destroy
* @return 0 on success, -1 on failure
*/
int xc_domain_destroy(xc_interface *xch,
uint32_t domid);
/**
* This function resumes a suspended domain. The domain should have
* been previously suspended.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id to resume
* @parm fast use cooperative resume (guest must support this)
* return 0 on success, -1 on failure
*/
int xc_domain_resume(xc_interface *xch,
uint32_t domid,
int fast);
/**
* This function will shutdown a domain. This is intended for use in
* fully-virtualized domains where this operation is analogous to the
* sched_op operations in a paravirtualized domain. The caller is
* expected to give the reason for the shutdown.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id to destroy
* @parm reason is the reason (SHUTDOWN_xxx) for the shutdown
* @return 0 on success, -1 on failure
*/
int xc_domain_shutdown(xc_interface *xch,
uint32_t domid,
int reason);
int xc_watchdog(xc_interface *xch,
uint32_t id,
uint32_t timeout);
int xc_vcpu_setaffinity(xc_interface *xch,
uint32_t domid,
int vcpu,
xc_cpumap_t cpumap);
int xc_vcpu_getaffinity(xc_interface *xch,
uint32_t domid,
int vcpu,
xc_cpumap_t cpumap);
/**
* This function will return information about one or more domains. It is
* designed to iterate over the list of domains. If a single domain is
* requested, this function will return the next domain in the list - if
* one exists. It is, therefore, important in this case to make sure the
* domain requested was the one returned.
*
* @parm xch a handle to an open hypervisor interface
* @parm first_domid the first domain to enumerate information from. Domains
* are currently enumerate in order of creation.
* @parm max_doms the number of elements in info
* @parm info an array of max_doms size that will contain the information for
* the enumerated domains.
* @return the number of domains enumerated or -1 on error
*/
int xc_domain_getinfo(xc_interface *xch,
uint32_t first_domid,
unsigned int max_doms,
xc_dominfo_t *info);
/**
* This function will set the execution context for the specified vcpu.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain to set the vcpu context for
* @parm vcpu the vcpu number for the context
* @parm ctxt pointer to the the cpu context with the values to set
* @return the number of domains enumerated or -1 on error
*/
int xc_vcpu_setcontext(xc_interface *xch,
uint32_t domid,
uint32_t vcpu,
vcpu_guest_context_any_t *ctxt);
/**
* This function will return information about one or more domains, using a
* single hypercall. The domain information will be stored into the supplied
* array of xc_domaininfo_t structures.
*
* @parm xch a handle to an open hypervisor interface
* @parm first_domain the first domain to enumerate information from.
* Domains are currently enumerate in order of creation.
* @parm max_domains the number of elements in info
* @parm info an array of max_doms size that will contain the information for
* the enumerated domains.
* @return the number of domains enumerated or -1 on error
*/
int xc_domain_getinfolist(xc_interface *xch,
uint32_t first_domain,
unsigned int max_domains,
xc_domaininfo_t *info);
/**
* This function returns information about the context of a hvm domain
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain to get information from
* @parm ctxt_buf a pointer to a structure to store the execution context of
* the hvm domain
* @parm size the size of ctxt_buf in bytes
* @return 0 on success, -1 on failure
*/
int xc_domain_hvm_getcontext(xc_interface *xch,
uint32_t domid,
uint8_t *ctxt_buf,
uint32_t size);
/**
* This function returns one element of the context of a hvm domain
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain to get information from
* @parm typecode which type of elemnt required
* @parm instance which instance of the type
* @parm ctxt_buf a pointer to a structure to store the execution context of
* the hvm domain
* @parm size the size of ctxt_buf (must be >= HVM_SAVE_LENGTH(typecode))
* @return 0 on success, -1 on failure
*/
int xc_domain_hvm_getcontext_partial(xc_interface *xch,
uint32_t domid,
uint16_t typecode,
uint16_t instance,
void *ctxt_buf,
uint32_t size);
/**
* This function will set the context for hvm domain
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain to set the hvm domain context for
* @parm hvm_ctxt pointer to the the hvm context with the values to set
* @parm size the size of hvm_ctxt in bytes
* @return 0 on success, -1 on failure
*/
int xc_domain_hvm_setcontext(xc_interface *xch,
uint32_t domid,
uint8_t *hvm_ctxt,
uint32_t size);
/**
* This function returns information about the execution context of a
* particular vcpu of a domain.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain to get information from
* @parm vcpu the vcpu number
* @parm ctxt a pointer to a structure to store the execution context of the
* domain
* @return 0 on success, -1 on failure
*/
int xc_vcpu_getcontext(xc_interface *xch,
uint32_t domid,
uint32_t vcpu,
vcpu_guest_context_any_t *ctxt);
typedef xen_domctl_getvcpuinfo_t xc_vcpuinfo_t;
int xc_vcpu_getinfo(xc_interface *xch,
uint32_t domid,
uint32_t vcpu,
xc_vcpuinfo_t *info);
long long xc_domain_get_cpu_usage(xc_interface *xch,
domid_t domid,
int vcpu);
int xc_domain_sethandle(xc_interface *xch, uint32_t domid,
xen_domain_handle_t handle);
typedef xen_domctl_shadow_op_stats_t xc_shadow_op_stats_t;
int xc_shadow_control(xc_interface *xch,
uint32_t domid,
unsigned int sop,
xc_hypercall_buffer_t *dirty_bitmap,
unsigned long pages,
unsigned long *mb,
uint32_t mode,
xc_shadow_op_stats_t *stats);
int xc_sedf_domain_set(xc_interface *xch,
uint32_t domid,
uint64_t period, uint64_t slice,
uint64_t latency, uint16_t extratime,
uint16_t weight);
int xc_sedf_domain_get(xc_interface *xch,
uint32_t domid,
uint64_t* period, uint64_t *slice,
uint64_t *latency, uint16_t *extratime,
uint16_t *weight);
int xc_sched_credit_domain_set(xc_interface *xch,
uint32_t domid,
struct xen_domctl_sched_credit *sdom);
int xc_sched_credit_domain_get(xc_interface *xch,
uint32_t domid,
struct xen_domctl_sched_credit *sdom);
int xc_sched_credit_params_set(xc_interface *xch,
uint32_t cpupool_id,
struct xen_sysctl_credit_schedule *schedule);
int xc_sched_credit_params_get(xc_interface *xch,
uint32_t cpupool_id,
struct xen_sysctl_credit_schedule *schedule);
int xc_sched_credit2_domain_set(xc_interface *xch,
uint32_t domid,
struct xen_domctl_sched_credit2 *sdom);
int xc_sched_credit2_domain_get(xc_interface *xch,
uint32_t domid,
struct xen_domctl_sched_credit2 *sdom);
int
xc_sched_arinc653_schedule_set(
xc_interface *xch,
struct xen_sysctl_arinc653_schedule *schedule);
int
xc_sched_arinc653_schedule_get(
xc_interface *xch,
struct xen_sysctl_arinc653_schedule *schedule);
/**
* This function sends a trigger to a domain.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id to send trigger
* @parm trigger the trigger type
* @parm vcpu the vcpu number to send trigger
* return 0 on success, -1 on failure
*/
int xc_domain_send_trigger(xc_interface *xch,
uint32_t domid,
uint32_t trigger,
uint32_t vcpu);
/**
* This function enables or disable debugging of a domain.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id to send trigger
* @parm enable true to enable debugging
* return 0 on success, -1 on failure
*/
int xc_domain_setdebugging(xc_interface *xch,
uint32_t domid,
unsigned int enable);
/**
* This function audits the (top level) p2m of a domain
* and returns the different error counts, if any.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id whose top level p2m we
* want to audit
* @parm orphans count of m2p entries for valid
* domain pages containing an invalid value
* @parm m2p_bad count of m2p entries mismatching the
* associated p2m entry for this domain
* @parm p2m_bad count of p2m entries for this domain
* mismatching the associated m2p entry
* return 0 on success, -1 on failure
* errno values on failure include:
* -ENOSYS: not implemented
* -EFAULT: could not copy results back to guest
*/
int xc_domain_p2m_audit(xc_interface *xch,
uint32_t domid,
uint64_t *orphans,
uint64_t *m2p_bad,
uint64_t *p2m_bad);
/**
* This function sets or clears the requirement that an access memory
* event listener is required on the domain.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id to send trigger
* @parm enable true to require a listener
* return 0 on success, -1 on failure
*/
int xc_domain_set_access_required(xc_interface *xch,
uint32_t domid,
unsigned int required);
/**
* This function sets the handler of global VIRQs sent by the hypervisor
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain id which will handle the VIRQ
* @parm virq the virq number (VIRQ_*)
* return 0 on success, -1 on failure
*/
int xc_domain_set_virq_handler(xc_interface *xch, uint32_t domid, int virq);
/*
* CPUPOOL MANAGEMENT FUNCTIONS
*/
typedef struct xc_cpupoolinfo {
uint32_t cpupool_id;
uint32_t sched_id;
uint32_t n_dom;
xc_cpumap_t cpumap;
} xc_cpupoolinfo_t;
/**
* Create a new cpupool.
*
* @parm xc_handle a handle to an open hypervisor interface
* @parm ppoolid pointer to the new cpupool id (in/out)
* @parm sched_id id of scheduler to use for pool
* return 0 on success, -1 on failure
*/
int xc_cpupool_create(xc_interface *xch,
uint32_t *ppoolid,
uint32_t sched_id);
/**
* Destroy a cpupool. Pool must be unused and have no cpu assigned.
*
* @parm xc_handle a handle to an open hypervisor interface
* @parm poolid id of the cpupool to destroy
* return 0 on success, -1 on failure
*/
int xc_cpupool_destroy(xc_interface *xch,
uint32_t poolid);
/**
* Get cpupool info. Returns info for up to the specified number of cpupools
* starting at the given id.
* @parm xc_handle a handle to an open hypervisor interface
* @parm poolid lowest id for which info is returned
* return cpupool info ptr (to be freed via xc_cpupool_infofree)
*/
xc_cpupoolinfo_t *xc_cpupool_getinfo(xc_interface *xch,
uint32_t poolid);
/**
* Free cpupool info. Used to free info obtained via xc_cpupool_getinfo.
* @parm xc_handle a handle to an open hypervisor interface
* @parm info area to free
*/
void xc_cpupool_infofree(xc_interface *xch,
xc_cpupoolinfo_t *info);
/**
* Add cpu to a cpupool. cpu may be -1 indicating the first unassigned.
*
* @parm xc_handle a handle to an open hypervisor interface
* @parm poolid id of the cpupool
* @parm cpu cpu number to add
* return 0 on success, -1 on failure
*/
int xc_cpupool_addcpu(xc_interface *xch,
uint32_t poolid,
int cpu);
/**
* Remove cpu from cpupool. cpu may be -1 indicating the last cpu of the pool.
*
* @parm xc_handle a handle to an open hypervisor interface
* @parm poolid id of the cpupool
* @parm cpu cpu number to remove
* return 0 on success, -1 on failure
*/
int xc_cpupool_removecpu(xc_interface *xch,
uint32_t poolid,
int cpu);
/**
* Move domain to another cpupool.
*
* @parm xc_handle a handle to an open hypervisor interface
* @parm poolid id of the destination cpupool
* @parm domid id of the domain to move
* return 0 on success, -1 on failure
*/
int xc_cpupool_movedomain(xc_interface *xch,
uint32_t poolid,
uint32_t domid);
/**
* Return map of cpus not in any cpupool.
*
* @parm xc_handle a handle to an open hypervisor interface
* return cpumap array on success, NULL else
*/
xc_cpumap_t xc_cpupool_freeinfo(xc_interface *xch);
/*
* EVENT CHANNEL FUNCTIONS
*
* None of these do any logging.
*/
/* A port identifier is guaranteed to fit in 31 bits. */
typedef int evtchn_port_or_error_t;
/**
* This function allocates an unbound port. Ports are named endpoints used for
* interdomain communication. This function is most useful in opening a
* well-known port within a domain to receive events on.
*
* NOTE: If you are allocating a *local* unbound port, you probably want to
* use xc_evtchn_bind_unbound_port(). This function is intended for allocating
* ports *only* during domain creation.
*
* @parm xch a handle to an open hypervisor interface
* @parm dom the ID of the local domain (the 'allocatee')
* @parm remote_dom the ID of the domain who will later bind
* @return allocated port (in @dom) on success, -1 on failure
*/
evtchn_port_or_error_t
xc_evtchn_alloc_unbound(xc_interface *xch,
uint32_t dom,
uint32_t remote_dom);
int xc_evtchn_reset(xc_interface *xch,
uint32_t dom);
typedef struct evtchn_status xc_evtchn_status_t;
int xc_evtchn_status(xc_interface *xch, xc_evtchn_status_t *status);
/*
* Return a handle to the event channel driver, or -1 on failure, in which case
* errno will be set appropriately.
*
* Before Xen pre-4.1 this function would sometimes report errors with perror.
*/
xc_evtchn *xc_evtchn_open(xentoollog_logger *logger,
unsigned open_flags);
/*
* Close a handle previously allocated with xc_evtchn_open().
*/
int xc_evtchn_close(xc_evtchn *xce);
/*
* Return an fd that can be select()ed on.
*/
int xc_evtchn_fd(xc_evtchn *xce);
/*
* Notify the given event channel. Returns -1 on failure, in which case
* errno will be set appropriately.
*/
int xc_evtchn_notify(xc_evtchn *xce, evtchn_port_t port);
/*
* Returns a new event port awaiting interdomain connection from the given
* domain ID, or -1 on failure, in which case errno will be set appropriately.
*/
evtchn_port_or_error_t
xc_evtchn_bind_unbound_port(xc_evtchn *xce, int domid);
/*
* Returns a new event port bound to the remote port for the given domain ID,
* or -1 on failure, in which case errno will be set appropriately.
*/
evtchn_port_or_error_t
xc_evtchn_bind_interdomain(xc_evtchn *xce, int domid,
evtchn_port_t remote_port);
/*
* Bind an event channel to the given VIRQ. Returns the event channel bound to
* the VIRQ, or -1 on failure, in which case errno will be set appropriately.
*/
evtchn_port_or_error_t
xc_evtchn_bind_virq(xc_evtchn *xce, unsigned int virq);
/*
* Unbind the given event channel. Returns -1 on failure, in which case errno
* will be set appropriately.
*/
int xc_evtchn_unbind(xc_evtchn *xce, evtchn_port_t port);
/*
* Return the next event channel to become pending, or -1 on failure, in which
* case errno will be set appropriately.
*/
evtchn_port_or_error_t
xc_evtchn_pending(xc_evtchn *xce);
/*
* Unmask the given event channel. Returns -1 on failure, in which case errno
* will be set appropriately.
*/
int xc_evtchn_unmask(xc_evtchn *xce, evtchn_port_t port);
int xc_physdev_pci_access_modify(xc_interface *xch,
uint32_t domid,
int bus,
int dev,
int func,
int enable);
int xc_readconsolering(xc_interface *xch,
char *buffer,
unsigned int *pnr_chars,
int clear, int incremental, uint32_t *pindex);
int xc_send_debug_keys(xc_interface *xch, char *keys);
typedef xen_sysctl_physinfo_t xc_physinfo_t;
typedef xen_sysctl_topologyinfo_t xc_topologyinfo_t;
typedef xen_sysctl_numainfo_t xc_numainfo_t;
typedef uint32_t xc_cpu_to_node_t;
typedef uint32_t xc_cpu_to_socket_t;
typedef uint32_t xc_cpu_to_core_t;
typedef uint64_t xc_node_to_memsize_t;
typedef uint64_t xc_node_to_memfree_t;
typedef uint32_t xc_node_to_node_dist_t;
int xc_physinfo(xc_interface *xch, xc_physinfo_t *info);
int xc_topologyinfo(xc_interface *xch, xc_topologyinfo_t *info);
int xc_numainfo(xc_interface *xch, xc_numainfo_t *info);
int xc_sched_id(xc_interface *xch,
int *sched_id);
int xc_machphys_mfn_list(xc_interface *xch,
unsigned long max_extents,
xen_pfn_t *extent_start);
typedef xen_sysctl_cpuinfo_t xc_cpuinfo_t;
int xc_getcpuinfo(xc_interface *xch, int max_cpus,
xc_cpuinfo_t *info, int *nr_cpus);
int xc_domain_setmaxmem(xc_interface *xch,
uint32_t domid,
unsigned int max_memkb);
int xc_domain_set_memmap_limit(xc_interface *xch,
uint32_t domid,
unsigned long map_limitkb);
#if defined(__i386__) || defined(__x86_64__)
/*
* PC BIOS standard E820 types and structure.
*/
#define E820_RAM 1
#define E820_RESERVED 2
#define E820_ACPI 3
#define E820_NVS 4
#define E820_UNUSABLE 5
#define E820MAX (128)
struct e820entry {
uint64_t addr;
uint64_t size;
uint32_t type;
} __attribute__((packed));
int xc_domain_set_memory_map(xc_interface *xch,
uint32_t domid,
struct e820entry entries[],
uint32_t nr_entries);
int xc_get_machine_memory_map(xc_interface *xch,
struct e820entry entries[],
uint32_t max_entries);
#endif
int xc_domain_set_time_offset(xc_interface *xch,
uint32_t domid,
int32_t time_offset_seconds);
int xc_domain_set_tsc_info(xc_interface *xch,
uint32_t domid,
uint32_t tsc_mode,
uint64_t elapsed_nsec,
uint32_t gtsc_khz,
uint32_t incarnation);
int xc_domain_get_tsc_info(xc_interface *xch,
uint32_t domid,
uint32_t *tsc_mode,
uint64_t *elapsed_nsec,
uint32_t *gtsc_khz,
uint32_t *incarnation);
int xc_domain_disable_migrate(xc_interface *xch, uint32_t domid);
int xc_domain_maximum_gpfn(xc_interface *xch, domid_t domid);
int xc_domain_increase_reservation(xc_interface *xch,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned int mem_flags,
xen_pfn_t *extent_start);
int xc_domain_increase_reservation_exact(xc_interface *xch,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned int mem_flags,
xen_pfn_t *extent_start);
int xc_domain_decrease_reservation(xc_interface *xch,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
xen_pfn_t *extent_start);
int xc_domain_decrease_reservation_exact(xc_interface *xch,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
xen_pfn_t *extent_start);
int xc_domain_add_to_physmap(xc_interface *xch,
uint32_t domid,
unsigned int space,
unsigned long idx,
xen_pfn_t gpfn);
int xc_domain_populate_physmap(xc_interface *xch,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned int mem_flags,
xen_pfn_t *extent_start);
int xc_domain_populate_physmap_exact(xc_interface *xch,
uint32_t domid,
unsigned long nr_extents,
unsigned int extent_order,
unsigned int mem_flags,
xen_pfn_t *extent_start);
int xc_domain_memory_exchange_pages(xc_interface *xch,
int domid,
unsigned long nr_in_extents,
unsigned int in_order,
xen_pfn_t *in_extents,
unsigned long nr_out_extents,
unsigned int out_order,
xen_pfn_t *out_extents);
int xc_domain_set_pod_target(xc_interface *xch,
uint32_t domid,
uint64_t target_pages,
uint64_t *tot_pages,
uint64_t *pod_cache_pages,
uint64_t *pod_entries);
int xc_domain_get_pod_target(xc_interface *xch,
uint32_t domid,
uint64_t *tot_pages,
uint64_t *pod_cache_pages,
uint64_t *pod_entries);
int xc_domain_ioport_permission(xc_interface *xch,
uint32_t domid,
uint32_t first_port,
uint32_t nr_ports,
uint32_t allow_access);
int xc_domain_irq_permission(xc_interface *xch,
uint32_t domid,
uint8_t pirq,
uint8_t allow_access);
int xc_domain_iomem_permission(xc_interface *xch,
uint32_t domid,
unsigned long first_mfn,
unsigned long nr_mfns,
uint8_t allow_access);
int xc_domain_pin_memory_cacheattr(xc_interface *xch,
uint32_t domid,
uint64_t start,
uint64_t end,
uint32_t type);
unsigned long xc_make_page_below_4G(xc_interface *xch, uint32_t domid,
unsigned long mfn);
typedef xen_sysctl_perfc_desc_t xc_perfc_desc_t;
typedef xen_sysctl_perfc_val_t xc_perfc_val_t;
int xc_perfc_reset(xc_interface *xch);
int xc_perfc_query_number(xc_interface *xch,
int *nbr_desc,
int *nbr_val);
int xc_perfc_query(xc_interface *xch,
xc_hypercall_buffer_t *desc,
xc_hypercall_buffer_t *val);
typedef xen_sysctl_lockprof_data_t xc_lockprof_data_t;
int xc_lockprof_reset(xc_interface *xch);
int xc_lockprof_query_number(xc_interface *xch,
uint32_t *n_elems);
int xc_lockprof_query(xc_interface *xch,
uint32_t *n_elems,
uint64_t *time,
xc_hypercall_buffer_t *data);
void *xc_memalign(xc_interface *xch, size_t alignment, size_t size);
/**
* Memory maps a range within one domain to a local address range. Mappings
* should be unmapped with munmap and should follow the same rules as mmap
* regarding page alignment. Returns NULL on failure.
*
* @parm xch a handle on an open hypervisor interface
* @parm dom the domain to map memory from
* @parm size the amount of memory to map (in multiples of page size)
* @parm prot same flag as in mmap().
* @parm mfn the frame address to map.
*/
void *xc_map_foreign_range(xc_interface *xch, uint32_t dom,
int size, int prot,
unsigned long mfn );
void *xc_map_foreign_pages(xc_interface *xch, uint32_t dom, int prot,
const xen_pfn_t *arr, int num );
/**
* DEPRECATED - use xc_map_foreign_bulk() instead.
*
* Like xc_map_foreign_pages(), except it can succeeed partially.
* When a page cannot be mapped, its PFN in @arr is or'ed with
* 0xF0000000 to indicate the error.
*/
void *xc_map_foreign_batch(xc_interface *xch, uint32_t dom, int prot,
xen_pfn_t *arr, int num );
/**
* Like xc_map_foreign_pages(), except it can succeed partially.
* When a page cannot be mapped, its respective field in @err is
* set to the corresponding errno value.
*/
void *xc_map_foreign_bulk(xc_interface *xch, uint32_t dom, int prot,
const xen_pfn_t *arr, int *err, unsigned int num);
/**
* Translates a virtual address in the context of a given domain and
* vcpu returning the GFN containing the address (that is, an MFN for
* PV guests, a PFN for HVM guests). Returns 0 for failure.
*
* @parm xch a handle on an open hypervisor interface
* @parm dom the domain to perform the translation in
* @parm vcpu the vcpu to perform the translation on
* @parm virt the virtual address to translate
*/
unsigned long xc_translate_foreign_address(xc_interface *xch, uint32_t dom,
int vcpu, unsigned long long virt);
/**
* DEPRECATED. Avoid using this, as it does not correctly account for PFNs
* without a backing MFN.
*/
int xc_get_pfn_list(xc_interface *xch, uint32_t domid, uint64_t *pfn_buf,
unsigned long max_pfns);
unsigned long xc_ia64_fpsr_default(void);
int xc_copy_to_domain_page(xc_interface *xch, uint32_t domid,
unsigned long dst_pfn, const char *src_page);
int xc_clear_domain_page(xc_interface *xch, uint32_t domid,
unsigned long dst_pfn);
int xc_mmuext_op(xc_interface *xch, struct mmuext_op *op, unsigned int nr_ops,
domid_t dom);
/* System wide memory properties */
long xc_maximum_ram_page(xc_interface *xch);
/**
* This function returns the total number of pages freed by using sharing
* on the system. For example, if two domains contain a single entry in
* their p2m map that points to the same shared page (and no other pages
* in the system are shared), then this function should return 1.
*/
long xc_sharing_freed_pages(xc_interface *xch);
/**
* This function returns the total number of frames occupied by shared
* pages on the system. This is independent of the number of domains
* pointing at these frames. For example, in the above scenario this
* should return 1. The following should hold:
* memory usage without sharing = freed_pages + used_frames
*/
long xc_sharing_used_frames(xc_interface *xch);
/* Get current total pages allocated to a domain. */
long xc_get_tot_pages(xc_interface *xch, uint32_t domid);
/**
* This function retrieves the the number of bytes available
* in the heap in a specific range of address-widths and nodes.
*
* @parm xch a handle to an open hypervisor interface
* @parm domid the domain to query
* @parm min_width the smallest address width to query (0 if don't care)
* @parm max_width the largest address width to query (0 if don't care)
* @parm node the node to query (-1 for all)
* @parm *bytes caller variable to put total bytes counted
* @return 0 on success, <0 on failure.
*/
int xc_availheap(xc_interface *xch, int min_width, int max_width, int node,
uint64_t *bytes);
/*
* Trace Buffer Operations
*/
/**
* xc_tbuf_enable - enable tracing buffers
*
* @parm xch a handle to an open hypervisor interface
* @parm cnt size of tracing buffers to create (in pages)
* @parm mfn location to store mfn of the trace buffers to
* @parm size location to store the size (in bytes) of a trace buffer to
*
* Gets the machine address of the trace pointer area and the size of the
* per CPU buffers.
*/
int xc_tbuf_enable(xc_interface *xch, unsigned long pages,
unsigned long *mfn, unsigned long *size);
/*
* Disable tracing buffers.
*/
int xc_tbuf_disable(xc_interface *xch);
/**
* This function sets the size of the trace buffers. Setting the size
* is currently a one-shot operation that may be performed either at boot
* time or via this interface, not both. The buffer size must be set before
* enabling tracing.
*
* @parm xch a handle to an open hypervisor interface
* @parm size the size in pages per cpu for the trace buffers
* @return 0 on success, -1 on failure.
*/
int xc_tbuf_set_size(xc_interface *xch, unsigned long size);
/**
* This function retrieves the current size of the trace buffers.
* Note that the size returned is in terms of bytes, not pages.
* @parm xch a handle to an open hypervisor interface
* @parm size will contain the size in bytes for the trace buffers
* @return 0 on success, -1 on failure.
*/
int xc_tbuf_get_size(xc_interface *xch, unsigned long *size);
int xc_tbuf_set_cpu_mask(xc_interface *xch, uint32_t mask);
int xc_tbuf_set_evt_mask(xc_interface *xch, uint32_t mask);
int xc_domctl(xc_interface *xch, struct xen_domctl *domctl);
int xc_sysctl(xc_interface *xch, struct xen_sysctl *sysctl);
int xc_version(xc_interface *xch, int cmd, void *arg);
int xc_flask_op(xc_interface *xch, xen_flask_op_t *op);
/*
* Subscribe to state changes in a domain via evtchn.
* Returns -1 on failure, in which case errno will be set appropriately.
*/
int xc_domain_subscribe_for_suspend(
xc_interface *xch, domid_t domid, evtchn_port_t port);
/**************************
* GRANT TABLE OPERATIONS *
**************************/
/*
* These functions sometimes log messages as above, but not always.
*/
/*
* Return an fd onto the grant table driver. Logs errors.
*/
xc_gnttab *xc_gnttab_open(xentoollog_logger *logger,
unsigned open_flags);
/*
* Close a handle previously allocated with xc_gnttab_open().
* Never logs errors.
*/
int xc_gnttab_close(xc_gnttab *xcg);
/*
* Memory maps a grant reference from one domain to a local address range.
* Mappings should be unmapped with xc_gnttab_munmap. Logs errors.
*
* @parm xcg a handle on an open grant table interface
* @parm domid the domain to map memory from
* @parm ref the grant reference ID to map
* @parm prot same flag as in mmap()
*/
void *xc_gnttab_map_grant_ref(xc_gnttab *xcg,
uint32_t domid,
uint32_t ref,
int prot);
/**
* Memory maps one or more grant references from one or more domains to a
* contiguous local address range. Mappings should be unmapped with
* xc_gnttab_munmap. Logs errors.
*
* @parm xcg a handle on an open grant table interface
* @parm count the number of grant references to be mapped
* @parm domids an array of @count domain IDs by which the corresponding @refs
* were granted
* @parm refs an array of @count grant references to be mapped
* @parm prot same flag as in mmap()
*/
void *xc_gnttab_map_grant_refs(xc_gnttab *xcg,
uint32_t count,
uint32_t *domids,
uint32_t *refs,
int prot);
/**
* Memory maps one or more grant references from one domain to a
* contiguous local address range. Mappings should be unmapped with
* xc_gnttab_munmap. Logs errors.
*
* @parm xcg a handle on an open grant table interface
* @parm count the number of grant references to be mapped
* @parm domid the domain to map memory from
* @parm refs an array of @count grant references to be mapped
* @parm prot same flag as in mmap()
*/
void *xc_gnttab_map_domain_grant_refs(xc_gnttab *xcg,
uint32_t count,
uint32_t domid,
uint32_t *refs,
int prot);
/**
* Memory maps a grant reference from one domain to a local address range.
* Mappings should be unmapped with xc_gnttab_munmap. If notify_offset or
* notify_port are not -1, this version will attempt to set up an unmap
* notification at the given offset and event channel. When the page is
* unmapped, the byte at the given offset will be zeroed and a wakeup will be
* sent to the given event channel. Logs errors.
*
* @parm xcg a handle on an open grant table interface
* @parm domid the domain to map memory from
* @parm ref the grant reference ID to map
* @parm prot same flag as in mmap()
* @parm notify_offset The byte offset in the page to use for unmap
* notification; -1 for none.
* @parm notify_port The event channel port to use for unmap notify, or -1
*/
void *xc_gnttab_map_grant_ref_notify(xc_gnttab *xcg,
uint32_t domid,
uint32_t ref,
int prot,
uint32_t notify_offset,
evtchn_port_t notify_port);
/*
* Unmaps the @count pages starting at @start_address, which were mapped by a
* call to xc_gnttab_map_grant_ref or xc_gnttab_map_grant_refs. Never logs.
*/
int xc_gnttab_munmap(xc_gnttab *xcg,
void *start_address,
uint32_t count);
/*
* Sets the maximum number of grants that may be mapped by the given instance
* to @count. Never logs.
*
* N.B. This function must be called after opening the handle, and before any
* other functions are invoked on it.
*
* N.B. When variable-length grants are mapped, fragmentation may be observed,
* and it may not be possible to satisfy requests up to the maximum number
* of grants.
*/
int xc_gnttab_set_max_grants(xc_gnttab *xcg,
uint32_t count);
int xc_gnttab_op(xc_interface *xch, int cmd,
void * op, int op_size, int count);
/* Logs iff hypercall bounce fails, otherwise doesn't. */
int xc_gnttab_get_version(xc_interface *xch, int domid); /* Never logs */
grant_entry_v1_t *xc_gnttab_map_table_v1(xc_interface *xch, int domid, int *gnt_num);
grant_entry_v2_t *xc_gnttab_map_table_v2(xc_interface *xch, int domid, int *gnt_num);
/* Sometimes these don't set errno [fixme], and sometimes they don't log. */
/*
* Return an fd onto the grant sharing driver. Logs errors.
*/
xc_gntshr *xc_gntshr_open(xentoollog_logger *logger,
unsigned open_flags);
/*
* Close a handle previously allocated with xc_gntshr_open().
* Never logs errors.
*/
int xc_gntshr_close(xc_gntshr *xcg);
/*
* Creates and shares pages with another domain.
*
* @parm xcg a handle to an open grant sharing instance
* @parm domid the domain to share memory with
* @parm count the number of pages to share
* @parm refs the grant references of the pages (output)
* @parm writable true if the other domain can write to the pages
* @return local mapping of the pages
*/
void *xc_gntshr_share_pages(xc_gntshr *xcg, uint32_t domid,
int count, uint32_t *refs, int writable);
/*
* Creates and shares a page with another domain, with unmap notification.
*
* @parm xcg a handle to an open grant sharing instance
* @parm domid the domain to share memory with
* @parm refs the grant reference of the pages (output)
* @parm writable true if the other domain can write to the page
* @parm notify_offset The byte offset in the page to use for unmap
* notification; -1 for none.
* @parm notify_port The event channel port to use for unmap notify, or -1
* @return local mapping of the page
*/
void *xc_gntshr_share_page_notify(xc_gntshr *xcg, uint32_t domid,
uint32_t *ref, int writable,
uint32_t notify_offset,
evtchn_port_t notify_port);
/*
* Unmaps the @count pages starting at @start_address, which were mapped by a
* call to xc_gntshr_share_*. Never logs.
*/
int xc_gntshr_munmap(xc_gntshr *xcg, void *start_address, uint32_t count);
int xc_physdev_map_pirq(xc_interface *xch,
int domid,
int index,
int *pirq);
int xc_physdev_map_pirq_msi(xc_interface *xch,
int domid,
int index,
int *pirq,
int devfn,
int bus,
int entry_nr,
uint64_t table_base);
int xc_physdev_unmap_pirq(xc_interface *xch,
int domid,
int pirq);
int xc_hvm_set_pci_intx_level(
xc_interface *xch, domid_t dom,
uint8_t domain, uint8_t bus, uint8_t device, uint8_t intx,
unsigned int level);
int xc_hvm_set_isa_irq_level(
xc_interface *xch, domid_t dom,
uint8_t isa_irq,
unsigned int level);
int xc_hvm_set_pci_link_route(
xc_interface *xch, domid_t dom, uint8_t link, uint8_t isa_irq);
int xc_hvm_inject_msi(
xc_interface *xch, domid_t dom, uint64_t addr, uint32_t data);
/*
* Track dirty bit changes in the VRAM area
*
* All of this is done atomically:
* - get the dirty bitmap since the last call
* - set up dirty tracking area for period up to the next call
* - clear the dirty tracking area.
*
* Returns -ENODATA and does not fill bitmap if the area has changed since the
* last call.
*/
int xc_hvm_track_dirty_vram(
xc_interface *xch, domid_t dom,
uint64_t first_pfn, uint64_t nr,
unsigned long *bitmap);
/*
* Notify that some pages got modified by the Device Model
*/
int xc_hvm_modified_memory(
xc_interface *xch, domid_t dom, uint64_t first_pfn, uint64_t nr);
/*
* Set a range of memory to a specific type.
* Allowed types are HVMMEM_ram_rw, HVMMEM_ram_ro, HVMMEM_mmio_dm
*/
int xc_hvm_set_mem_type(
xc_interface *xch, domid_t dom, hvmmem_type_t memtype, uint64_t first_pfn, uint64_t nr);
/*
* Set a range of memory to a specific access.
* Allowed types are HVMMEM_access_default, HVMMEM_access_n, any combination of
* HVM_access_ + (rwx), and HVM_access_rx2rw
*/
int xc_hvm_set_mem_access(
xc_interface *xch, domid_t dom, hvmmem_access_t memaccess, uint64_t first_pfn, uint64_t nr);
/*
* Gets the mem access for the given page (returned in memacess on success)
*/
int xc_hvm_get_mem_access(
xc_interface *xch, domid_t dom, uint64_t pfn, hvmmem_access_t* memaccess);
/*
* Injects a hardware/software CPU trap, to take effect the next time the HVM
* resumes.
*/
int xc_hvm_inject_trap(
xc_interface *xch, domid_t dom, int vcpu, uint32_t trap, uint32_t error_code,
uint64_t cr2);
/*
* LOGGING AND ERROR REPORTING
*/
enum xc_error_code {
XC_ERROR_NONE = 0,
XC_INTERNAL_ERROR = 1,
XC_INVALID_KERNEL = 2,
XC_INVALID_PARAM = 3,
XC_OUT_OF_MEMORY = 4,
/* new codes need to be added to xc_error_level_to_desc too */
};
#define XC_MAX_ERROR_MSG_LEN 1024
typedef struct xc_error {
enum xc_error_code code;
char message[XC_MAX_ERROR_MSG_LEN];
} xc_error;
/*
* Convert an error code or level into a text description. Return values
* are pointers to fixed strings and do not need to be freed.
* Do not fail, but return pointers to generic strings if fed bogus input.
*/
const char *xc_error_code_to_desc(int code);
/*
* Convert an errno value to a text description.
*/
const char *xc_strerror(xc_interface *xch, int errcode);
/*
* Return a pointer to the last error with level XC_REPORT_ERROR. This
* pointer and the data pointed to are only valid until the next call
* to libxc in the same thread.
*/
const xc_error *xc_get_last_error(xc_interface *handle);
/*
* Clear the last error
*/
void xc_clear_last_error(xc_interface *xch);
int xc_set_hvm_param(xc_interface *handle, domid_t dom, int param, unsigned long value);
int xc_get_hvm_param(xc_interface *handle, domid_t dom, int param, unsigned long *value);
/* IA64 specific, nvram save */
int xc_ia64_save_to_nvram(xc_interface *xch, uint32_t dom);
/* IA64 specific, nvram init */
int xc_ia64_nvram_init(xc_interface *xch, char *dom_name, uint32_t dom);
/* IA64 specific, set guest OS type optimizations */
int xc_ia64_set_os_type(xc_interface *xch, char *guest_os_type, uint32_t dom);
/* HVM guest pass-through */
int xc_assign_device(xc_interface *xch,
uint32_t domid,
uint32_t machine_bdf);
int xc_get_device_group(xc_interface *xch,
uint32_t domid,
uint32_t machine_bdf,
uint32_t max_sdevs,
uint32_t *num_sdevs,
uint32_t *sdev_array);
int xc_test_assign_device(xc_interface *xch,
uint32_t domid,
uint32_t machine_bdf);
int xc_deassign_device(xc_interface *xch,
uint32_t domid,
uint32_t machine_bdf);
int xc_domain_memory_mapping(xc_interface *xch,
uint32_t domid,
unsigned long first_gfn,
unsigned long first_mfn,
unsigned long nr_mfns,
uint32_t add_mapping);
int xc_domain_ioport_mapping(xc_interface *xch,
uint32_t domid,
uint32_t first_gport,
uint32_t first_mport,
uint32_t nr_ports,
uint32_t add_mapping);
int xc_domain_update_msi_irq(
xc_interface *xch,
uint32_t domid,
uint32_t gvec,
uint32_t pirq,
uint32_t gflags,
uint64_t gtable);
int xc_domain_unbind_msi_irq(xc_interface *xch,
uint32_t domid,
uint32_t gvec,
uint32_t pirq,
uint32_t gflags);
int xc_domain_bind_pt_irq(xc_interface *xch,
uint32_t domid,
uint8_t machine_irq,
uint8_t irq_type,
uint8_t bus,
uint8_t device,
uint8_t intx,
uint8_t isa_irq);
int xc_domain_unbind_pt_irq(xc_interface *xch,
uint32_t domid,
uint8_t machine_irq,
uint8_t irq_type,
uint8_t bus,
uint8_t device,
uint8_t intx,
uint8_t isa_irq);
int xc_domain_bind_pt_pci_irq(xc_interface *xch,
uint32_t domid,
uint8_t machine_irq,
uint8_t bus,
uint8_t device,
uint8_t intx);
int xc_domain_bind_pt_isa_irq(xc_interface *xch,
uint32_t domid,
uint8_t machine_irq);
int xc_domain_set_machine_address_size(xc_interface *xch,
uint32_t domid,
unsigned int width);
int xc_domain_get_machine_address_size(xc_interface *xch,
uint32_t domid);
int xc_domain_suppress_spurious_page_faults(xc_interface *xch,
uint32_t domid);
/* Set the target domain */
int xc_domain_set_target(xc_interface *xch,
uint32_t domid,
uint32_t target);
/* Control the domain for debug */
int xc_domain_debug_control(xc_interface *xch,
uint32_t domid,
uint32_t sop,
uint32_t vcpu);
#if defined(__i386__) || defined(__x86_64__)
int xc_cpuid_check(xc_interface *xch,
const unsigned int *input,
const char **config,
char **config_transformed);
int xc_cpuid_set(xc_interface *xch,
domid_t domid,
const unsigned int *input,
const char **config,
char **config_transformed);
int xc_cpuid_apply_policy(xc_interface *xch,
domid_t domid);
void xc_cpuid_to_str(const unsigned int *regs,
char **strs);
int xc_mca_op(xc_interface *xch, struct xen_mc *mc);
#endif
struct xc_px_val {
uint64_t freq; /* Px core frequency */
uint64_t residency; /* Px residency time */
uint64_t count; /* Px transition count */
};
struct xc_px_stat {
uint8_t total; /* total Px states */
uint8_t usable; /* usable Px states */
uint8_t last; /* last Px state */
uint8_t cur; /* current Px state */
uint64_t *trans_pt; /* Px transition table */
struct xc_px_val *pt;
};
int xc_pm_get_max_px(xc_interface *xch, int cpuid, int *max_px);
int xc_pm_get_pxstat(xc_interface *xch, int cpuid, struct xc_px_stat *pxpt);
int xc_pm_reset_pxstat(xc_interface *xch, int cpuid);
struct xc_cx_stat {
uint32_t nr; /* entry nr in triggers & residencies, including C0 */
uint32_t last; /* last Cx state */
uint64_t idle_time; /* idle time from boot */
uint64_t *triggers; /* Cx trigger counts */
uint64_t *residencies; /* Cx residencies */
uint64_t pc2;
uint64_t pc3;
uint64_t pc6;
uint64_t pc7;
uint64_t cc3;
uint64_t cc6;
uint64_t cc7;
};
typedef struct xc_cx_stat xc_cx_stat_t;
int xc_pm_get_max_cx(xc_interface *xch, int cpuid, int *max_cx);
int xc_pm_get_cxstat(xc_interface *xch, int cpuid, struct xc_cx_stat *cxpt);
int xc_pm_reset_cxstat(xc_interface *xch, int cpuid);
int xc_cpu_online(xc_interface *xch, int cpu);
int xc_cpu_offline(xc_interface *xch, int cpu);
/*
* cpufreq para name of this structure named
* same as sysfs file name of native linux
*/
typedef xen_userspace_t xc_userspace_t;
typedef xen_ondemand_t xc_ondemand_t;
struct xc_get_cpufreq_para {
/* IN/OUT variable */
uint32_t cpu_num;
uint32_t freq_num;
uint32_t gov_num;
/* for all governors */
/* OUT variable */
uint32_t *affected_cpus;
uint32_t *scaling_available_frequencies;
char *scaling_available_governors;
char scaling_driver[CPUFREQ_NAME_LEN];
uint32_t cpuinfo_cur_freq;
uint32_t cpuinfo_max_freq;
uint32_t cpuinfo_min_freq;
uint32_t scaling_cur_freq;
char scaling_governor[CPUFREQ_NAME_LEN];
uint32_t scaling_max_freq;
uint32_t scaling_min_freq;
/* for specific governor */
union {
xc_userspace_t userspace;
xc_ondemand_t ondemand;
} u;
int32_t turbo_enabled;
};
int xc_get_cpufreq_para(xc_interface *xch, int cpuid,
struct xc_get_cpufreq_para *user_para);
int xc_set_cpufreq_gov(xc_interface *xch, int cpuid, char *govname);
int xc_set_cpufreq_para(xc_interface *xch, int cpuid,
int ctrl_type, int ctrl_value);
int xc_get_cpufreq_avgfreq(xc_interface *xch, int cpuid, int *avg_freq);
int xc_set_sched_opt_smt(xc_interface *xch, uint32_t value);
int xc_set_vcpu_migration_delay(xc_interface *xch, uint32_t value);
int xc_get_vcpu_migration_delay(xc_interface *xch, uint32_t *value);
int xc_get_cpuidle_max_cstate(xc_interface *xch, uint32_t *value);
int xc_set_cpuidle_max_cstate(xc_interface *xch, uint32_t value);
int xc_enable_turbo(xc_interface *xch, int cpuid);
int xc_disable_turbo(xc_interface *xch, int cpuid);
/**
* tmem operations
*/
struct tmem_oid {
uint64_t oid[3];
};
int xc_tmem_control_oid(xc_interface *xch, int32_t pool_id, uint32_t subop,
uint32_t cli_id, uint32_t arg1, uint32_t arg2,
struct tmem_oid oid, void *buf);
int xc_tmem_control(xc_interface *xch,
int32_t pool_id, uint32_t subop, uint32_t cli_id,
uint32_t arg1, uint32_t arg2, uint64_t arg3, void *buf);
int xc_tmem_auth(xc_interface *xch, int cli_id, char *uuid_str, int arg1);
int xc_tmem_save(xc_interface *xch, int dom, int live, int fd, int field_marker);
int xc_tmem_save_extra(xc_interface *xch, int dom, int fd, int field_marker);
void xc_tmem_save_done(xc_interface *xch, int dom);
int xc_tmem_restore(xc_interface *xch, int dom, int fd);
int xc_tmem_restore_extra(xc_interface *xch, int dom, int fd);
/**
* mem_event operations
*/
int xc_mem_event_control(xc_interface *xch, domid_t domain_id, unsigned int op,
unsigned int mode, uint32_t *port);
int xc_mem_event_memop(xc_interface *xch, domid_t domain_id,
unsigned int op, unsigned int mode,
uint64_t gfn, void *buffer);
int xc_mem_paging_enable(xc_interface *xch, domid_t domain_id, uint32_t *port);
int xc_mem_paging_disable(xc_interface *xch, domid_t domain_id);
int xc_mem_paging_nominate(xc_interface *xch, domid_t domain_id,
unsigned long gfn);
int xc_mem_paging_evict(xc_interface *xch, domid_t domain_id, unsigned long gfn);
int xc_mem_paging_prep(xc_interface *xch, domid_t domain_id, unsigned long gfn);
int xc_mem_paging_load(xc_interface *xch, domid_t domain_id,
unsigned long gfn, void *buffer);
int xc_mem_access_enable(xc_interface *xch, domid_t domain_id, uint32_t *port);
int xc_mem_access_disable(xc_interface *xch, domid_t domain_id);
int xc_mem_access_resume(xc_interface *xch, domid_t domain_id,
unsigned long gfn);
/**
* memshr operations
*/
int xc_memshr_control(xc_interface *xch,
domid_t domid,
int enable);
int xc_memshr_ring_enable(xc_interface *xch,
domid_t domid,
uint32_t *port);
int xc_memshr_ring_disable(xc_interface *xch,
domid_t domid);
int xc_memshr_nominate_gfn(xc_interface *xch,
domid_t domid,
unsigned long gfn,
uint64_t *handle);
int xc_memshr_nominate_gref(xc_interface *xch,
domid_t domid,
grant_ref_t gref,
uint64_t *handle);
int xc_memshr_share_gfns(xc_interface *xch,
domid_t source_domain,
unsigned long source_gfn,
uint64_t source_handle,
domid_t client_domain,
unsigned long client_gfn,
uint64_t client_handle);
int xc_memshr_share_grefs(xc_interface *xch,
domid_t source_domain,
grant_ref_t source_gref,
uint64_t source_handle,
domid_t client_domain,
grant_ref_t client_gref,
uint64_t client_handle);
int xc_memshr_add_to_physmap(xc_interface *xch,
domid_t source_domain,
unsigned long source_gfn,
uint64_t source_handle,
domid_t client_domain,
unsigned long client_gfn);
int xc_memshr_domain_resume(xc_interface *xch,
domid_t domid);
int xc_memshr_debug_gfn(xc_interface *xch,
domid_t domid,
unsigned long gfn);
int xc_memshr_debug_mfn(xc_interface *xch,
domid_t domid,
unsigned long mfn);
int xc_memshr_debug_gref(xc_interface *xch,
domid_t domid,
grant_ref_t gref);
int xc_memshr_audit(xc_interface *xch);
int xc_flask_load(xc_interface *xc_handle, char *buf, uint32_t size);
int xc_flask_context_to_sid(xc_interface *xc_handle, char *buf, uint32_t size, uint32_t *sid);
int xc_flask_sid_to_context(xc_interface *xc_handle, int sid, char *buf, uint32_t size);
int xc_flask_getenforce(xc_interface *xc_handle);
int xc_flask_setenforce(xc_interface *xc_handle, int mode);
int xc_flask_getbool_byid(xc_interface *xc_handle, int id, char *name, uint32_t size, int *curr, int *pend);
int xc_flask_getbool_byname(xc_interface *xc_handle, char *name, int *curr, int *pend);
int xc_flask_setbool(xc_interface *xc_handle, char *name, int value, int commit);
int xc_flask_add_pirq(xc_interface *xc_handle, unsigned int pirq, char *scontext);
int xc_flask_add_ioport(xc_interface *xc_handle, unsigned long low, unsigned long high,
char *scontext);
int xc_flask_add_iomem(xc_interface *xc_handle, unsigned long low, unsigned long high,
char *scontext);
int xc_flask_add_device(xc_interface *xc_handle, unsigned long device, char *scontext);
int xc_flask_del_pirq(xc_interface *xc_handle, unsigned int pirq);
int xc_flask_del_ioport(xc_interface *xc_handle, unsigned long low, unsigned long high);
int xc_flask_del_iomem(xc_interface *xc_handle, unsigned long low, unsigned long high);
int xc_flask_del_device(xc_interface *xc_handle, unsigned long device);
int xc_flask_access(xc_interface *xc_handle, const char *scon, const char *tcon,
uint16_t tclass, uint32_t req,
uint32_t *allowed, uint32_t *decided,
uint32_t *auditallow, uint32_t *auditdeny,
uint32_t *seqno);
int xc_flask_avc_cachestats(xc_interface *xc_handle, char *buf, int size);
int xc_flask_policyvers(xc_interface *xc_handle);
int xc_flask_avc_hashstats(xc_interface *xc_handle, char *buf, int size);
int xc_flask_getavc_threshold(xc_interface *xc_handle);
int xc_flask_setavc_threshold(xc_interface *xc_handle, int threshold);
struct elf_binary;
void xc_elf_set_logfile(xc_interface *xch, struct elf_binary *elf,
int verbose);
/* Useful for callers who also use libelf. */
/**
* Checkpoint Compression
*/
typedef struct compression_ctx comp_ctx;
comp_ctx *xc_compression_create_context(xc_interface *xch,
unsigned long p2m_size);
void xc_compression_free_context(xc_interface *xch, comp_ctx *ctx);
/**
* Add a page to compression page buffer, to be compressed later.
*
* returns 0 if the page was successfully added to the page buffer
*
* returns -1 if there is no space in buffer. In this case, the
* application should call xc_compression_compress_pages to compress
* the buffer (or atleast part of it), thereby freeing some space in
* the page buffer.
*
* returns -2 if the pfn is out of bounds, where the bound is p2m_size
* parameter passed during xc_compression_create_context.
*/
int xc_compression_add_page(xc_interface *xch, comp_ctx *ctx, char *page,
unsigned long pfn, int israw);
/**
* Delta compress pages in the compression buffer and inserts the
* compressed data into the supplied compression buffer compbuf, whose
* size is compbuf_size.
* After compression, the pages are copied to the internal LRU cache.
*
* This function compresses as many pages as possible into the
* supplied compression buffer. It maintains an internal iterator to
* keep track of pages in the input buffer that are yet to be compressed.
*
* returns -1 if the compression buffer has run out of space.
* returns 1 on success.
* returns 0 if no more pages are left to be compressed.
* When the return value is non-zero, compbuf_len indicates the actual
* amount of data present in compbuf (<=compbuf_size).
*/
int xc_compression_compress_pages(xc_interface *xch, comp_ctx *ctx,
char *compbuf, unsigned long compbuf_size,
unsigned long *compbuf_len);
/**
* Resets the internal page buffer that holds dirty pages before compression.
* Also resets the iterators.
*/
void xc_compression_reset_pagebuf(xc_interface *xch, comp_ctx *ctx);
/**
* Caller must supply the compression buffer (compbuf),
* its size (compbuf_size) and a reference to index variable (compbuf_pos)
* that is used internally. Each call pulls out one page from the compressed
* chunk and copies it to dest.
*/
int xc_compression_uncompress_page(xc_interface *xch, char *compbuf,
unsigned long compbuf_size,
unsigned long *compbuf_pos, char *dest);
#endif /* XENCTRL_H */
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