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| author | Paolo Bonzini <pbonzini@redhat.com> | 2016-01-07 13:50:38 +0100 |
|---|---|---|
| committer | Paolo Bonzini <pbonzini@redhat.com> | 2016-01-07 13:50:38 +0100 |
| commit | e5e57e7a03b1cdcb98e4aed135def2a08cbf3257 (patch) | |
| tree | 7e294ba757bc94d07bddeafb4eafdb4aa562bd31 /arch/x86/kvm/x86.c | |
| parent | 168309855a7d1e16db751e9c647119fe2d2dc878 (diff) | |
| download | lwn-e5e57e7a03b1cdcb98e4aed135def2a08cbf3257.tar.gz lwn-e5e57e7a03b1cdcb98e4aed135def2a08cbf3257.zip | |
kvm: x86: only channel 0 of the i8254 is linked to the HPET
While setting the KVM PIT counters in 'kvm_pit_load_count', if
'hpet_legacy_start' is set, the function disables the timer on
channel[0], instead of the respective index 'channel'. This is
because channels 1-3 are not linked to the HPET. Fix the caller
to only activate the special HPET processing for channel 0.
Reported-by: P J P <pjp@fedoraproject.org>
Fixes: 0185604c2d82c560dab2f2933a18f797e74ab5a8
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/x86.c')
| -rw-r--r-- | arch/x86/kvm/x86.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7ffc224bbe41..97592e190413 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -3606,7 +3606,8 @@ static int kvm_vm_ioctl_set_pit2(struct kvm *kvm, struct kvm_pit_state2 *ps) sizeof(kvm->arch.vpit->pit_state.channels)); kvm->arch.vpit->pit_state.flags = ps->flags; for (i = 0; i < 3; i++) - kvm_pit_load_count(kvm, i, kvm->arch.vpit->pit_state.channels[i].count, start); + kvm_pit_load_count(kvm, i, kvm->arch.vpit->pit_state.channels[i].count, + start && i == 0); mutex_unlock(&kvm->arch.vpit->pit_state.lock); return 0; } |