freebsd-dev/sys/xen/features.c
Kip Macy 3a6d1fcf9c merge 186535, 186537, and 186538 from releng_7_xen
Log:
 - merge in latest xenbus from dfr's xenhvm
 - fix race condition in xs_read_reply by converting tsleep to mtx_sleep

Log:
 unmask evtchn in bind_{virq, ipi}_to_irq

Log:
 - remove code for handling case of not being able to sleep
 - eliminate tsleep - make sleeps atomic
2008-12-29 06:31:03 +00:00

25 lines
630 B
C

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <machine/xen/xen-os.h>
#include <xen/hypervisor.h>
#include <machine/xen/features.h>
uint8_t xen_features[XENFEAT_NR_SUBMAPS * 32] /* __read_mostly */;
void
setup_xen_features(void)
{
xen_feature_info_t fi;
int i, j;
for (i = 0; i < XENFEAT_NR_SUBMAPS; i++) {
fi.submap_idx = i;
if (HYPERVISOR_xen_version(XENVER_get_features, &fi) < 0)
break;
for (j = 0; j < 32; j++)
xen_features[i*32 + j] = !!(fi.submap & 1<<j);
}
}