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Date: Thu, 26 Jun 2008 15:27:52 +0300 From: Avi Kivity <avi@...ranet.com> To: kvm@...r.kernel.org Cc: linux-kernel@...r.kernel.org, Aurelien Jarno <aurelien@...el32.net> Subject: [PATCH 10/50] KVM: PIT: support mode 3 From: Aurelien Jarno <aurelien@...el32.net> 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 <aurelien@...el32.net> Signed-off-by: Avi Kivity <avi@...ranet.com> --- arch/x86/kvm/i8254.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/arch/x86/kvm/i8254.c b/arch/x86/kvm/i8254.c index 735ec9a..60074dc 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: -- 1.5.6 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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