Re: Question on stopping KVM start at boot

2010-03-13 Thread satimis
Hi Dustin, - snip - Where shall I add -b option?  Thanks modprobe -b says respect the blacklists. See: * http://manpages.ubuntu.com/manpages/lucid/en/man8/modprobe.8.html -b --use-blacklist This option causes modprobe to apply the blacklist commands in

Re: [PATCH] x86/kvm: Show guest system/user cputime in cpustat

2010-03-13 Thread Avi Kivity
On 03/12/2010 10:53 AM, Qing He wrote: When Qing(CCed) was working on nested VMX in the past, he found PV vmread/vmwrite indeed works well(it would write to the virtual vmcs so vmwrite can also benefit). Though compared to old machine(one our internal patch shows improve more than 5%), NHM get

Re: Shadow page table questions

2010-03-13 Thread Avi Kivity
On 03/11/2010 06:14 PM, Marek Olszewski wrote: It doesn't, and there are often multiple shadow pages per guest page, distinguished by their sp-role field. Oh, great! Does this mean that there is already a mechanism for synchronizing all shadow pages shadowing the same guest when such a guest

Re: how to tweak kernel to get the best out of kvm?

2010-03-13 Thread Avi Kivity
On 03/11/2010 03:24 PM, Harald Dunkel wrote: Hi Avi, I had missed to include some important syslog lines from the host system. See attachment. On 03/10/10 14:15, Avi Kivity wrote: You have tons of iowait time, indicating an I/O bottleneck. Is this disk IO or network IO? disk.

Re: raw disks no longer work in latest kvm (kvm-88 was fine)

2010-03-13 Thread Antoine Martin
On 03/08/2010 02:35 AM, Avi Kivity wrote: On 03/07/2010 09:25 PM, Antoine Martin wrote: On 03/08/2010 02:17 AM, Avi Kivity wrote: On 03/07/2010 09:13 PM, Antoine Martin wrote: What version of glibc do you have installed? Latest stable: sys-devel/gcc-4.3.4 sys-libs/glibc-2.10.1-r1 $ git

Re: [PATCH 0/5] Fix some mmu/emulator atomicity issues (v2)

2010-03-13 Thread Avi Kivity
On 03/10/2010 04:50 PM, Avi Kivity wrote: Currently when we emulate a locked operation into a shadowed guest page table, we perform a write rather than a true atomic. This is indicated by the emulating exchange as write message that shows up in dmesg. In addition, the pte prefetch operation

Re: Make QEmu HPET disabled by default for KVM?

2010-03-13 Thread Avi Kivity
On 03/11/2010 09:08 PM, Marcelo Tosatti wrote: I have kept --no-hpet in my setup for months... Any details about the problems? HPET is important to some guests. As Gleb mentioned in the other thread, reinjection will introduce another set of problems. Ideally all this timer

Re: Make QEmu HPET disabled by default for KVM?

2010-03-13 Thread Gleb Natapov
On Sun, Mar 14, 2010 at 09:05:50AM +0200, Avi Kivity wrote: On 03/11/2010 09:08 PM, Marcelo Tosatti wrote: I have kept --no-hpet in my setup for months... Any details about the problems? HPET is important to some guests. As Gleb mentioned in the other thread, reinjection will introduce

Re: raw disks no longer work in latest kvm (kvm-88 was fine)

2010-03-13 Thread Avi Kivity
On 03/13/2010 11:51 AM, Antoine Martin wrote: preadv/pwritev was actually introduced in 2.6.30. Perhaps you last build glibc before that? If so, a rebuild may be all that's necessary. To be certain, I've rebuilt qemu-kvm against: linux-headers-2.6.33 + glibc-2.10.1-r1 (both freshly built)

Re: [patch 1/3] target-i386: print EFER in cpu_dump_state

2010-03-13 Thread Avi Kivity
On 03/11/2010 08:53 PM, Marcelo Tosatti wrote: On Thu, Mar 11, 2010 at 10:35:21AM +0200, Avi Kivity wrote: On 03/09/2010 03:53 AM, Marcelo Tosatti wrote: Signed-off-by: Marcelo Tosattimtosa...@redhat.com Index: qemu-kvm-uq/target-i386/helper.c