redonkable/alistair23-linux
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Merge branch 'kvm-updates/2.6.33' of git://git.kernel.org/pub/scm/virt/kvm/kvm

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* 'kvm-updates/2.6.33' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
  KVM: PIT: control word is write-only
  kvmclock: count total_sleep_time when updating guest clock
  Export the symbol of getboottime and mmonotonic_to_bootbased
This commit is contained in:
Linus Torvalds 2010-02-10 07:18:15 -08:00
parent 5993fe31c0 ee73f656a6
commit 2cbd188388
3 changed files with 8 additions and 4 deletions
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3
arch/x86/kvm/i8254.c
View file

@ -467,6 +467,9 @@ static int pit_ioport_read(struct kvm_io_device *this,
return -EOPNOTSUPP;
addr &= KVM_PIT_CHANNEL_MASK;
if (addr == 3)
return 0;
s = &pit_state->channels[addr];
mutex_lock(&pit_state->lock);

7
arch/x86/kvm/x86.c
View file

@ -670,7 +670,7 @@ static void kvm_write_wall_clock(struct kvm *kvm, gpa_t wall_clock)
{
static int version;
struct pvclock_wall_clock wc;
struct timespec now, sys, boot;
struct timespec boot;
if (!wall_clock)
return;
@ -685,9 +685,7 @@ static void kvm_write_wall_clock(struct kvm *kvm, gpa_t wall_clock)
* wall clock specified here. guest system time equals host
* system time for us, thus we must fill in host boot time here.
*/
now = current_kernel_time();
ktime_get_ts(&sys);
boot = ns_to_timespec(timespec_to_ns(&now) - timespec_to_ns(&sys));
getboottime(&boot);
wc.sec = boot.tv_sec;
wc.nsec = boot.tv_nsec;
@ -762,6 +760,7 @@ static void kvm_write_guest_time(struct kvm_vcpu *v)
local_irq_save(flags);
kvm_get_msr(v, MSR_IA32_TSC, &vcpu->hv_clock.tsc_timestamp);
ktime_get_ts(&ts);
monotonic_to_bootbased(&ts);
local_irq_restore(flags);
/* With all the info we got, fill in the values */

2
kernel/time/timekeeping.c
View file

@ -880,6 +880,7 @@ void getboottime(struct timespec *ts)
set_normalized_timespec(ts, -boottime.tv_sec, -boottime.tv_nsec);
}
EXPORT_SYMBOL_GPL(getboottime);
/**
* monotonic_to_bootbased - Convert the monotonic time to boot based.
@ -889,6 +890,7 @@ void monotonic_to_bootbased(struct timespec *ts)
{
*ts = timespec_add_safe(*ts, total_sleep_time);
}
EXPORT_SYMBOL_GPL(monotonic_to_bootbased);
unsigned long get_seconds(void)
{