Re: kvmclock doesn't work, help?

On Mon, Dec 21, 2015 at 02:49:25PM -0800, Andy Lutomirski wrote: > On Fri, Dec 18, 2015 at 1:49 PM, Marcelo Tosatti wrote: > > On Fri, Dec 18, 2015 at 12:25:11PM -0800, Andy Lutomirski wrote: > >> [cc: John Stultz -- maybe you have ideas on how this should best > >> integrate

Re: kvmclock doesn't work, help?

On Wed, Dec 23, 2015 at 11:27 AM, Marcelo Tosatti wrote: > On Mon, Dec 21, 2015 at 02:49:25PM -0800, Andy Lutomirski wrote: >> On Fri, Dec 18, 2015 at 1:49 PM, Marcelo Tosatti wrote: >> > (busy spin is equally problematic as IPI for realtime guests). >>

Re: kvmclock doesn't work, help?

On Fri, Dec 18, 2015 at 1:49 PM, Marcelo Tosatti wrote: > On Fri, Dec 18, 2015 at 12:25:11PM -0800, Andy Lutomirski wrote: >> [cc: John Stultz -- maybe you have ideas on how this should best >> integrate with the core code] >> >> On Fri, Dec 18, 2015 at 11:45 AM, Marcelo

Re: kvmclock doesn't work, help?

On Fri, Dec 18, 2015 at 12:25:11PM -0800, Andy Lutomirski wrote: > [cc: John Stultz -- maybe you have ideas on how this should best > integrate with the core code] > > On Fri, Dec 18, 2015 at 11:45 AM, Marcelo Tosatti wrote: > > On Fri, Dec 18, 2015 at 11:27:13AM -0800, Andy

Re: kvmclock doesn't work, help?

[cc: John Stultz -- maybe you have ideas on how this should best integrate with the core code] On Fri, Dec 18, 2015 at 11:45 AM, Marcelo Tosatti wrote: > On Fri, Dec 18, 2015 at 11:27:13AM -0800, Andy Lutomirski wrote: >> On Fri, Dec 18, 2015 at 3:47 AM, Marcelo Tosatti

Re: kvmclock doesn't work, help?

On Fri, Dec 18, 2015 at 11:27:13AM -0800, Andy Lutomirski wrote: > On Fri, Dec 18, 2015 at 3:47 AM, Marcelo Tosatti wrote: > > On Thu, Dec 17, 2015 at 05:12:59PM -0800, Andy Lutomirski wrote: > >> On Thu, Dec 17, 2015 at 11:08 AM, Marcelo Tosatti > >>

Re: kvmclock doesn't work, help?

On Fri, Dec 18, 2015 at 3:47 AM, Marcelo Tosatti wrote: > On Thu, Dec 17, 2015 at 05:12:59PM -0800, Andy Lutomirski wrote: >> On Thu, Dec 17, 2015 at 11:08 AM, Marcelo Tosatti >> wrote: >> > On Thu, Dec 17, 2015 at 08:33:17AM -0800, Andy Lutomirski

Re: kvmclock doesn't work, help?

On Thu, Dec 17, 2015 at 05:12:59PM -0800, Andy Lutomirski wrote: > On Thu, Dec 17, 2015 at 11:08 AM, Marcelo Tosatti wrote: > > On Thu, Dec 17, 2015 at 08:33:17AM -0800, Andy Lutomirski wrote: > >> On Wed, Dec 16, 2015 at 1:57 PM, Marcelo Tosatti > >>

Re: kvmclock doesn't work, help?

On Fri, Dec 18, 2015 at 12:25 PM, Andy Lutomirski wrote: > [cc: John Stultz -- maybe you have ideas on how this should best > integrate with the core code] > > On Fri, Dec 18, 2015 at 11:45 AM, Marcelo Tosatti wrote: >> On Fri, Dec 18, 2015 at 11:27:13AM

Re: kvmclock doesn't work, help?

On Wed, Dec 16, 2015 at 10:17:16AM -0800, Andy Lutomirski wrote: > On Wed, Dec 16, 2015 at 9:48 AM, Andy Lutomirski wrote: > > On Tue, Dec 15, 2015 at 12:42 AM, Paolo Bonzini wrote: > >> > >> > >> On 14/12/2015 23:31, Andy Lutomirski wrote: > >>> >

Re: kvmclock doesn't work, help?

On Wed, Dec 16, 2015 at 1:57 PM, Marcelo Tosatti wrote: > On Wed, Dec 16, 2015 at 10:17:16AM -0800, Andy Lutomirski wrote: >> On Wed, Dec 16, 2015 at 9:48 AM, Andy Lutomirski wrote: >> > On Tue, Dec 15, 2015 at 12:42 AM, Paolo Bonzini

Re: kvmclock doesn't work, help?

GOn Mon, Dec 14, 2015 at 02:31:10PM -0800, Andy Lutomirski wrote: > On Mon, Dec 14, 2015 at 2:00 PM, Marcelo Tosatti wrote: > > On Mon, Dec 14, 2015 at 02:44:15PM +0100, Paolo Bonzini wrote: > >> > >> > >> On 11/12/2015 22:57, Andy Lutomirski wrote: > >> > I'm still not

Re: kvmclock doesn't work, help?

On Thu, Dec 17, 2015 at 08:33:17AM -0800, Andy Lutomirski wrote: > On Wed, Dec 16, 2015 at 1:57 PM, Marcelo Tosatti wrote: > > On Wed, Dec 16, 2015 at 10:17:16AM -0800, Andy Lutomirski wrote: > >> On Wed, Dec 16, 2015 at 9:48 AM, Andy Lutomirski > >>

Re: kvmclock doesn't work, help?

On Thu, Dec 17, 2015 at 11:08 AM, Marcelo Tosatti wrote: > On Thu, Dec 17, 2015 at 08:33:17AM -0800, Andy Lutomirski wrote: >> On Wed, Dec 16, 2015 at 1:57 PM, Marcelo Tosatti wrote: >> > On Wed, Dec 16, 2015 at 10:17:16AM -0800, Andy Lutomirski wrote:

Re: kvmclock doesn't work, help?

On Tue, Dec 15, 2015 at 12:42 AM, Paolo Bonzini wrote: > > > On 14/12/2015 23:31, Andy Lutomirski wrote: >> > RAW TSC NTP corrected TSC >> > t0 10 10 >> > t1 20 19.99 >> > t2 30

Re: kvmclock doesn't work, help?

On Wed, Dec 16, 2015 at 9:48 AM, Andy Lutomirski wrote: > On Tue, Dec 15, 2015 at 12:42 AM, Paolo Bonzini wrote: >> >> >> On 14/12/2015 23:31, Andy Lutomirski wrote: >>> > RAW TSC NTP corrected TSC >>> > t0 10

Re: kvmclock doesn't work, help?

On 14/12/2015 23:31, Andy Lutomirski wrote: > > RAW TSC NTP corrected TSC > > t0 10 10 > > t1 20 19.99 > > t2 30 29.98 > > t3 40 39.97 > > t4 50

Re: kvmclock doesn't work, help?

On 11/12/2015 22:57, Andy Lutomirski wrote: > I'm still not seeing the issue. > > The formula is: > > (((rdtsc - pvti->tsc_timestamp) * pvti->tsc_to_system_mul) >> > pvti->tsc_shift) + pvti->system_time > > Obviously, if you reset pvti->tsc_timestamp to the current tsc value > after

Re: kvmclock doesn't work, help?

On Fri, Dec 11, 2015 at 01:57:23PM -0800, Andy Lutomirski wrote: > On Thu, Dec 10, 2015 at 1:32 PM, Marcelo Tosatti wrote: > > On Wed, Dec 09, 2015 at 01:10:59PM -0800, Andy Lutomirski wrote: > >> I'm trying to clean up kvmclock and I can't get it to work at all. My > >>

Re: kvmclock doesn't work, help?

On Mon, Dec 14, 2015 at 10:07:21AM -0800, Andy Lutomirski wrote: > On Fri, Dec 11, 2015 at 3:48 PM, Marcelo Tosatti wrote: > > On Fri, Dec 11, 2015 at 01:57:23PM -0800, Andy Lutomirski wrote: > >> On Thu, Dec 10, 2015 at 1:32 PM, Marcelo Tosatti > >>

Re: kvmclock doesn't work, help?

On Fri, Dec 11, 2015 at 3:48 PM, Marcelo Tosatti wrote: > On Fri, Dec 11, 2015 at 01:57:23PM -0800, Andy Lutomirski wrote: >> On Thu, Dec 10, 2015 at 1:32 PM, Marcelo Tosatti wrote: >> > On Wed, Dec 09, 2015 at 01:10:59PM -0800, Andy Lutomirski wrote: >>

Re: kvmclock doesn't work, help?

On Mon, Dec 14, 2015 at 02:44:15PM +0100, Paolo Bonzini wrote: > > > On 11/12/2015 22:57, Andy Lutomirski wrote: > > I'm still not seeing the issue. > > > > The formula is: > > > > (((rdtsc - pvti->tsc_timestamp) * pvti->tsc_to_system_mul) >> > > pvti->tsc_shift) + pvti->system_time > > > >

Re: kvmclock doesn't work, help?

On Mon, Dec 14, 2015 at 2:00 PM, Marcelo Tosatti wrote: > On Mon, Dec 14, 2015 at 02:44:15PM +0100, Paolo Bonzini wrote: >> >> >> On 11/12/2015 22:57, Andy Lutomirski wrote: >> > I'm still not seeing the issue. >> > >> > The formula is: >> > >> > (((rdtsc -

Re: kvmclock doesn't work, help?

On Wed, Dec 09, 2015 at 01:10:59PM -0800, Andy Lutomirski wrote: > I'm trying to clean up kvmclock and I can't get it to work at all. My > host is 4.4.0-rc3-ish on a Skylake laptop that has a working TSC. > > If I boot an SMP (2 vcpus) guest, tracing says: > > qemu-system-x86-2517 [001]

Re: kvmclock doesn't work, help?

On Wed, Dec 09, 2015 at 02:27:36PM -0800, Andy Lutomirski wrote: > On Wed, Dec 9, 2015 at 2:12 PM, Paolo Bonzini wrote: > > > > > > On 09/12/2015 22:49, Andy Lutomirski wrote: > >> On Wed, Dec 9, 2015 at 1:16 PM, Paolo Bonzini wrote: > >>> > >>> > >>> On

Re: kvmclock doesn't work, help?

On Wed, Dec 09, 2015 at 01:10:59PM -0800, Andy Lutomirski wrote: > I'm trying to clean up kvmclock and I can't get it to work at all. My > host is 4.4.0-rc3-ish on a Skylake laptop that has a working TSC. > > If I boot an SMP (2 vcpus) guest, tracing says: > > qemu-system-x86-2517 [001]

Re: kvmclock doesn't work, help?

On Thu, Dec 10, 2015 at 1:32 PM, Marcelo Tosatti wrote: > On Wed, Dec 09, 2015 at 01:10:59PM -0800, Andy Lutomirski wrote: >> I'm trying to clean up kvmclock and I can't get it to work at all. My >> host is 4.4.0-rc3-ish on a Skylake laptop that has a working TSC. >> >> If I

Re: kvmclock doesn't work, help?

On Wed, Dec 9, 2015 at 1:16 PM, Paolo Bonzini wrote: > > > On 09/12/2015 22:10, Andy Lutomirski wrote: >> Can we please stop making kvmclock more complex? It's a beast right >> now, and not in a good way. It's far too tangled with the vclock >> machinery on both the host

Re: kvmclock doesn't work, help?

On Wed, Dec 9, 2015 at 2:12 PM, Paolo Bonzini wrote: > > > On 09/12/2015 22:49, Andy Lutomirski wrote: >> On Wed, Dec 9, 2015 at 1:16 PM, Paolo Bonzini wrote: >>> >>> >>> On 09/12/2015 22:10, Andy Lutomirski wrote: Can we please stop making kvmclock

Re: kvmclock doesn't work, help?

On 09/12/2015 23:27, Andy Lutomirski wrote: > On Wed, Dec 9, 2015 at 2:12 PM, Paolo Bonzini wrote: >> On 09/12/2015 22:49, Andy Lutomirski wrote: >>> On Wed, Dec 9, 2015 at 1:16 PM, Paolo Bonzini wrote: On 09/12/2015 22:10, Andy

Re: kvmclock doesn't work, help?

On 09/12/2015 22:10, Andy Lutomirski wrote: > Can we please stop making kvmclock more complex? It's a beast right > now, and not in a good way. It's far too tangled with the vclock > machinery on both the host and guest sides, the pvclock stuff is not > well thought out (even in principle in

Re: kvmclock doesn't work, help?

On Wed, Dec 9, 2015 at 2:27 PM, Andy Lutomirski wrote: > On Wed, Dec 9, 2015 at 2:12 PM, Paolo Bonzini wrote: >> >> >> On 09/12/2015 22:49, Andy Lutomirski wrote: >>> On Wed, Dec 9, 2015 at 1:16 PM, Paolo Bonzini wrote:

Re: kvmclock doesn't work, help?

On 09/12/2015 22:49, Andy Lutomirski wrote: > On Wed, Dec 9, 2015 at 1:16 PM, Paolo Bonzini wrote: >> >> >> On 09/12/2015 22:10, Andy Lutomirski wrote: >>> Can we please stop making kvmclock more complex? It's a beast right >>> now, and not in a good way. It's far too