blob: 1c51b2c87f30a12dfb8d022c54de1f88046234ef [file] [log] [blame]
/* SPDX-License-Identifier: GPL-2.0 */
#include <trace/events/xen.h>
#include "xen-ops.h"
/* Multicalls */
struct multicall_space
struct multicall_entry *mc;
void *args;
/* Allocate room for a multicall and its args */
struct multicall_space __xen_mc_entry(size_t args);
DECLARE_PER_CPU(unsigned long, xen_mc_irq_flags);
/* Call to start a batch of multiple __xen_mc_entry()s. Must be
paired with xen_mc_issue() */
static inline void xen_mc_batch(void)
unsigned long flags;
/* need to disable interrupts until this entry is complete */
__this_cpu_write(xen_mc_irq_flags, flags);
static inline struct multicall_space xen_mc_entry(size_t args)
return __xen_mc_entry(args);
/* Flush all pending multicalls */
void xen_mc_flush(void);
/* Issue a multicall if we're not in a lazy mode */
static inline void xen_mc_issue(unsigned mode)
if ((paravirt_get_lazy_mode() & mode) == 0)
/* restore flags saved in xen_mc_batch */
/* Set up a callback to be called when the current batch is flushed */
void xen_mc_callback(void (*fn)(void *), void *data);
* Try to extend the arguments of the previous multicall command. The
* previous command's op must match. If it does, then it attempts to
* extend the argument space allocated to the multicall entry by
* arg_size bytes.
* The returned multicall_space will return with mc pointing to the
* command on success, or NULL on failure, and args pointing to the
* newly allocated space.
struct multicall_space xen_mc_extend_args(unsigned long op, size_t arg_size);
#endif /* _XEN_MULTICALLS_H */