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kvmclock: export kvmclock clocksource and data pointers 

To be used by KVM PTP driver.

Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Marcelo Tosatti 2017-01-24 15:09:41 -02:00 committed by Paolo Bonzini
parent 80fbd89cbd
commit f4066c2bc4
2 changed files with 10 additions and 1 deletions
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6
arch/x86/include/asm/kvmclock.h Normal file
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@ -0,0 +1,6 @@
#ifndef _ASM_X86_KVM_CLOCK_H
#define _ASM_X86_KVM_CLOCK_H
extern struct clocksource kvm_clock;
#endif /* _ASM_X86_KVM_CLOCK_H */

5
arch/x86/kernel/kvmclock.c
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@ -28,6 +28,7 @@
#include <asm/x86_init.h>
#include <asm/reboot.h>
#include <asm/kvmclock.h>
static int kvmclock __ro_after_init = 1;
static int msr_kvm_system_time = MSR_KVM_SYSTEM_TIME;
@ -49,6 +50,7 @@ struct pvclock_vsyscall_time_info *pvclock_pvti_cpu0_va(void)
{
return hv_clock;
}
EXPORT_SYMBOL_GPL(pvclock_pvti_cpu0_va);
/*
* The wallclock is the time of day when we booted. Since then, some time may
@ -174,13 +176,14 @@ bool kvm_check_and_clear_guest_paused(void)
return ret;
}
static struct clocksource kvm_clock = {
struct clocksource kvm_clock = {
.name = "kvm-clock",
.read = kvm_clock_get_cycles,
.rating = 400,
.mask = CLOCKSOURCE_MASK(64),
.flags = CLOCK_SOURCE_IS_CONTINUOUS,
};
EXPORT_SYMBOL_GPL(kvm_clock);
int kvm_register_clock(char *txt)
{