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[xen] Use generic test_and_clear_bit() function

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Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2016-03-16 21:27:07 +00:00
parent 9bab13a772
commit c14971bf88
2 changed files with 14 additions and 19 deletions
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14
src/include/ipxe/xen.h
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@@ -13,6 +13,7 @@ FILE_LICENCE ( GPL2_OR_LATER_OR_UBDL );
#define __XEN_INTERFACE_VERSION__ 0x00040400
#include <stdint.h>
#include <ipxe/bitops.h>
#include <ipxe/uaccess.h>
#include <xen/xen.h>
#include <xen/event_channel.h>
@@ -58,6 +59,19 @@ struct xen_hypervisor {
struct xen_store store;
};
/**
* Test and clear pending event
*
* @v xen Xen hypervisor
* @v port Event channel port
* @ret pending Event was pending
*/
static inline __attribute__ (( always_inline )) int
xenevent_pending ( struct xen_hypervisor *xen, evtchn_port_t port ) {
return test_and_clear_bit ( port, xen->shared->evtchn_pending );
}
#include <bits/xen.h>
/**