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Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic t
From: |
Dan Kenigsberg |
Subject: |
Re: [kvm-devel] [Qemu-devel] [PATCH 3/4] Add support for HPET periodic timer. |
Date: |
Thu, 23 Aug 2007 00:11:50 +0300 |
User-agent: |
Mutt/1.5.14 (2007-02-12) |
On Wed, Aug 22, 2007 at 02:34:24PM +0200, Andi Kleen wrote:
> On Wed, Aug 22, 2007 at 10:03:32AM +0300, Avi Kivity wrote:
> > Maybe the kernel is using the timer, so userspace can't. Just a guess.
>
> HPET has multiple timers (variable, but typically 2 or 4). The kernel
> only uses timer 0. It's possible someone else in user space is using
> it though. Try lsof /dev/hpet
Thanks for the ideas; however even after I made the kernel use tsc as
time source, and made sure that no one opens /dev/hpet, I fail to use
HPET (with same errors as before)
I now have
$ dmesg |grep -i hpet
ACPI: HPET 7D5B6AE0, 0038 (r1 A M I OEMHPET 5000708 MSFT 97)
ACPI: HPET id: 0x8086a301 base: 0xfed00000
hpet0: at MMIO 0xfed00000, IRQs 2, 8, 0, 0
hpet0: 4 64-bit timers, 14318180 Hz
hpet_resources: 0xfed00000 is busy
Any other idea?
Dan.
- [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, 2007/08/21
- 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 <=
- 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
[Qemu-devel] [PATCH 2/4] Add -clock option., Luca Tettamanti, 2007/08/17
Re: [Qemu-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take 2, Christian MICHON, 2007/08/17
[Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take 2, Anthony Liguori, 2007/08/18