424c32f1aa
This patch removes one padding byte and transform it into a flags field. New versions of guests using pvclock will query these flags upon each read. Flags, however, will only be interpreted when the guest decides to. It uses the pvclock_valid_flags function to signal that a specific set of flags should be taken into consideration. Which flags are valid are usually devised via HV negotiation. Signed-off-by: Glauber Costa <glommer@redhat.com> CC: Jeremy Fitzhardinge <jeremy@goop.org> Acked-by: Zachary Amsden <zamsden@redhat.com> Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
16 lines
515 B
C
16 lines
515 B
C
#ifndef _ASM_X86_PVCLOCK_H
|
|
#define _ASM_X86_PVCLOCK_H
|
|
|
|
#include <linux/clocksource.h>
|
|
#include <asm/pvclock-abi.h>
|
|
|
|
/* some helper functions for xen and kvm pv clock sources */
|
|
cycle_t pvclock_clocksource_read(struct pvclock_vcpu_time_info *src);
|
|
void pvclock_set_flags(u8 flags);
|
|
unsigned long pvclock_tsc_khz(struct pvclock_vcpu_time_info *src);
|
|
void pvclock_read_wallclock(struct pvclock_wall_clock *wall,
|
|
struct pvclock_vcpu_time_info *vcpu,
|
|
struct timespec *ts);
|
|
|
|
#endif /* _ASM_X86_PVCLOCK_H */
|