From f697554515b06e8d7264f316b25e6da943407142 Mon Sep 17 00:00:00 2001 From: Aurelien Jarno Date: Fri, 2 May 2008 17:02:23 +0200 Subject: [PATCH] KVM: PIT: support mode 3 The in-kernel PIT emulation ignores pending timers if operating under mode 3, which for example Hurd uses. This mode should output a square wave, high for (N+1)/2 counts and low for (N-1)/2 counts. As we only care about the resulting interrupts, the period is N, and mode 3 is the same as mode 2 with regard to interrupts. Signed-off-by: Aurelien Jarno Signed-off-by: Avi Kivity --- arch/x86/kvm/i8254.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index 735ec9a0b3..60074dc66b 100644 --- a/arch/x86/kvm/i8254.c +++ b/arch/x86/kvm/i8254.c @@ -308,6 +308,7 @@ static void pit_load_count(struct kvm *kvm, int channel, u32 val) create_pit_timer(&ps->pit_timer, val, 0); break; case 2: + case 3: create_pit_timer(&ps->pit_timer, val, 1); break; default: -- 2.39.5