[ kvm-Bugs-1998355 ] IO Performance

2008-06-22 Thread SourceForge.net
Bugs item #1998355, was opened at 2008-06-20 03:11 Message generated for change (Comment added) made by thekozmo You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=893831aid=1998355group_id=180599 Please note that this message will contain a full copy of the comment

Re: kvm-70 + RHEL4 + 2.6.25.7 == invalid module format

2008-06-22 Thread Avi Kivity
Anoosh Hosseini (anoosh) wrote: Using RHEL4 base with up-to-date kernel from kernel.org. (enabled virtio/kvm..). Checked makefiles and I am building with -mcmodel=kernel. Any advise appreciated. [EMAIL PROTECTED] src]# modprobe kvm-intel FATAL: Error inserting kvm_intel

Re: [PATCH] bios: Makefile ACPI DSDT generation

2008-06-22 Thread Avi Kivity
Alex Williamson wrote: Hi Avi, This builds on your preprocessor work for cleaning up the DSDT and makes it trivially easy to change the CPU and PCI hotplug slot count. I'm thinking about splitting a few SSDTs out of the monolithic DSDT, and generating some of the code at compile time should

Re: [kvm-devel] performance with guests running 2.4 kernels (specifically RHEL3)

2008-06-22 Thread Avi Kivity
David S. Ahern wrote: Avi: We did not get a chance to do this at the Forum. I'd be interested in whatever options you have for reducing the scan time further (e.g., try to get scan time down to 1-2 seconds). I'm unlikely to get time to do this properly for at least a week, as this will

Re: kvm-70 + RHEL4 + 2.6.25.7 == invalid module format

2008-06-22 Thread Avi Kivity
(re-adding kvm@) Anoosh Hosseini (anoosh) wrote: BTW I see this issue with kvm-69. But not in kvm-68. Right now use kvm-68's kvm-intel module along with kvm-69 simulation. Works fine. -anoosh I don't think anything special happened between kvm-68 and kvm-69. This might be a toolchain

Re: [Bug] Real mode guests never wake up after an HLT instruction

2008-06-22 Thread Avi Kivity
Mohammed Gamal wrote: CPU Model: Intel(R) Core(TM)2 Duo CPU T7250 @ 2.00GHz KVM version: kvm-69-1687-gd660add Host Kernel: 2.6.26-rc5 (x86_64) Guests: FreeDOS and Minix 3.1.2 32-bit Command: qemu-system-x86_64 -hda /media/sda6/dos or minix image Real mode guests (namely Minix 3 and FreeDOS

Re: [PATCH] KVM: VMX: Flush all VPID tagged TLB when VMXON

2008-06-22 Thread Avi Kivity
Yang, Sheng wrote: From efba05901f8ffca03208217d075f679f78f3469d Mon Sep 17 00:00:00 2001 From: Sheng Yang [EMAIL PROTECTED] Date: Tue, 17 Jun 2008 17:41:10 +0800 Subject: [PATCH] KVM: VMX: Flush all VPID tagged TLB when VMXON Why is this needed? Don't we flush a vpid immediately after

Re: [PATCH 1/4] KVM: Report hardware virtualization features

2008-06-22 Thread Dor Laor
On Sun, 2008-06-22 at 09:49 +0300, Avi Kivity wrote: Yang, Sheng wrote: From f02d2ccf01e8671d2da517f14a908d1df1cc42ad Mon Sep 17 00:00:00 2001 From: Sheng Yang [EMAIL PROTECTED] Date: Thu, 19 Jun 2008 18:41:26 +0800 Subject: [PATCH] KVM: Report hardware virtualization features The

Re: [PATCH 1/4] KVM: Report hardware virtualization features

2008-06-22 Thread Avi Kivity
Dor Laor wrote: Yes, this is definitely helpful. However, I think that users will expect cpu flags under /proc/cpuinfo. Perhaps we should add a new line 'virt flags' to /proc/cpuinfo? I think all the features are reported using msrs, so it can be done from arch/x86/kernel/cpu/proc.c

[ kvm-Bugs-1998355 ] IO Performance

2008-06-22 Thread SourceForge.net
Bugs item #1998355, was opened at 2008-06-20 00:11 Message generated for change (Comment added) made by bjrosen You can respond by visiting: https://sourceforge.net/tracker/?func=detailatid=893831aid=1998355group_id=180599 Please note that this message will contain a full copy of the comment

Re: KVM power usage - high wakeup rates

2008-06-22 Thread Anders
Anthony Liguori wrote: With the default options, my idle winxp guest causes about 550 wakeups/sec which is pretty close to what I'd expect. I don't think you'll get much better than that without using a dynticks guest. According to powertop, I had about 15 kvm wakeups/sec with my previous

Re: KVM: x86: move vapic page handling out of fast path

2008-06-22 Thread Marcelo Tosatti
On Sun, Jun 22, 2008 at 08:00:11AM +0300, Avi Kivity wrote: Marcelo Tosatti wrote: I fail to see the point of handling the vapic page grab and ref counting in __vcpu_run's heavyweight enter/exit path. It's to avoid pinning the page indefinitely. So move it to kvm_lapic_set_vapic_addr /

Re: RFC: cache_regs in kvm_emulate_pio

2008-06-22 Thread Marcelo Tosatti
On Sun, Jun 22, 2008 at 08:16:19AM +0300, Avi Kivity wrote: Looks good, but we can aim higher. The cache_regs() API was always confusing (I usually swap the two parts). If we replace all -regs access with accessors, we can make it completely transparent. It will be tricky in the

Re: [Bug] Real mode guests never wake up after an HLT instruction

2008-06-22 Thread Mohammed Gamal
On Sun, Jun 22, 2008 at 10:15 AM, Avi Kivity [EMAIL PROTECTED] wrote: Mohammed Gamal wrote: CPU Model: Intel(R) Core(TM)2 Duo CPU T7250 @ 2.00GHz KVM version: kvm-69-1687-gd660add Host Kernel: 2.6.26-rc5 (x86_64) Guests: FreeDOS and Minix 3.1.2 32-bit Command: qemu-system-x86_64 -hda

Re: [PATCH 1/4] KVM: Report hardware virtualization features

2008-06-22 Thread Avi Kivity
Yang, Sheng wrote: On Sunday 22 June 2008 20:21:37 Avi Kivity wrote: Dor Laor wrote: Yes, this is definitely helpful. However, I think that users will expect cpu flags under /proc/cpuinfo. Perhaps we should add a new line 'virt flags' to /proc/cpuinfo? I think all the features are

Re: [PATCH 1/4] KVM: Report hardware virtualization features

2008-06-22 Thread Yang, Sheng
On Monday 23 June 2008 10:40:33 Avi Kivity wrote: Yang, Sheng wrote: On Sunday 22 June 2008 20:21:37 Avi Kivity wrote: Dor Laor wrote: Yes, this is definitely helpful. However, I think that users will expect cpu flags under /proc/cpuinfo. Perhaps we should add a new line 'virt flags'