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Re: [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer.
From: |
Luca |
Subject: |
Re: [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer. |
Date: |
Tue, 21 Aug 2007 21:40:57 +0200 |
On 8/21/07, Matthew Kent <address@hidden> wrote:
> On Sat, 2007-18-08 at 01:11 +0200, Luca Tettamanti wrote:
> > plain text document attachment (clock-hpet)
> > Linux operates the HPET timer in legacy replacement mode, which means that
> > the periodic interrupt of the CMOS RTC is not delivered (qemu won't be able
> > to use /dev/rtc). Add support for HPET (/dev/hpet) as a replacement for the
> > RTC; the periodic interrupt is delivered via SIGIO and is handled in the
> > same way as the RTC timer.
> >
> > Signed-off-by: Luca Tettamanti <address@hidden>
>
> I must be missing something silly here.. should I be able to open more
> than one instance of qemu with -clock hpet? Because upon invoking a
> second instance of qemu HPET_IE_ON fails.
It depends on your hardware. Theoretically it's possible, but I've yet
to see a motherboard with more than one periodic timer.
"dmesg | grep hpet" should tell you something like:
hpet0: 3 64-bit timers, 14318180 Hz
Luca
- [Qemu-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take 2, Luca Tettamanti, 2007/08/17
- [Qemu-devel] [PATCH 1/4] Rework alarm timer infrastrucure., Luca Tettamanti, 2007/08/17
- [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Luca Tettamanti, 2007/08/17
- Re: [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Matthew Kent, 2007/08/21
- Re: [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer.,
Luca <=
- Re: [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Matthew Kent, 2007/08/21
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Dan Kenigsberg, 2007/08/22
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Avi Kivity, 2007/08/22
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Andi Kleen, 2007/08/22
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Dan Kenigsberg, 2007/08/22
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Andi Kleen, 2007/08/22
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Dan Kenigsberg, 2007/08/23
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Luca, 2007/08/24
- Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer., Dan Kenigsberg, 2007/08/25
[Qemu-devel] [PATCH 4/4] Add support for dynamic ticks., Luca Tettamanti, 2007/08/17