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xen: Support new libxc calls from xen unstable.

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This patch updates the libxenctrl calls in Qemu to use the new interface,
otherwise Qemu wouldn't be able to build against new versions of the
library.

We check libxenctrl version in configure, from Xen 3.3.0 to Xen
unstable.

Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Acked-by: Alexander Graf <agraf@suse.de>
Signed-off-by: Alexander Graf <agraf@suse.de>
This commit is contained in:
Anthony PERARD 2011-02-25 16:20:34 +00:00 • committed by Alexander Graf
parent ce6bc29458
commit d5b93ddfef
6 changed files with 164 additions and 32 deletions
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95
hw/xen_common.h
View file

@ -1,6 +1,8 @@
#ifndef QEMU_HW_XEN_COMMON_H
#define QEMU_HW_XEN_COMMON_H 1
#include "config-host.h"
#include <stddef.h>
#include <inttypes.h>
@ -13,22 +15,87 @@
#include "qemu-queue.h"
/*
* tweaks needed to build with different xen versions
* 0x00030205 -> 3.1.0
* 0x00030207 -> 3.2.0
* 0x00030208 -> unstable
* We don't support Xen prior to 3.3.0.
*/
#include <xen/xen-compat.h>
#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00030205
# define evtchn_port_or_error_t int
/* Xen before 4.0 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 400
static inline void *xc_map_foreign_bulk(int xc_handle, uint32_t dom, int prot,
xen_pfn_t *arr, int *err,
unsigned int num)
{
return xc_map_foreign_batch(xc_handle, dom, prot, arr, num);
}
#endif
#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00030207
# define xc_map_foreign_pages xc_map_foreign_batch
#endif
#if __XEN_LATEST_INTERFACE_VERSION__ < 0x00030208
# define xen_mb() mb()
# define xen_rmb() rmb()
# define xen_wmb() wmb()
/* Xen before 4.1 */
#if CONFIG_XEN_CTRL_INTERFACE_VERSION < 410
typedef int XenXC;
typedef int XenEvtchn;
typedef int XenGnttab;
# define XC_INTERFACE_FMT "%i"
# define XC_HANDLER_INITIAL_VALUE -1
static inline XenEvtchn xen_xc_evtchn_open(void *logger,
unsigned int open_flags)
{
return xc_evtchn_open();
}
static inline XenGnttab xen_xc_gnttab_open(void *logger,
unsigned int open_flags)
{
return xc_gnttab_open();
}
static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
unsigned int open_flags)
{
return xc_interface_open();
}
static inline int xc_fd(int xen_xc)
{
return xen_xc;
}
/* Xen 4.1 */
#else
typedef xc_interface *XenXC;
typedef xc_evtchn *XenEvtchn;
typedef xc_gnttab *XenGnttab;
# define XC_INTERFACE_FMT "%p"
# define XC_HANDLER_INITIAL_VALUE NULL
static inline XenEvtchn xen_xc_evtchn_open(void *logger,
unsigned int open_flags)
{
return xc_evtchn_open(logger, open_flags);
}
static inline XenGnttab xen_xc_gnttab_open(void *logger,
unsigned int open_flags)
{
return xc_gnttab_open(logger, open_flags);
}
static inline XenXC xen_xc_interface_open(void *logger, void *dombuild_logger,
unsigned int open_flags)
{
return xc_interface_open(logger, dombuild_logger, open_flags);
}
/* FIXME There is now way to have the xen fd */
static inline int xc_fd(xc_interface *xen_xc)
{
return -1;
}
#endif
#endif /* QEMU_HW_XEN_COMMON_H */