Re: [Xen-devel] [PATCH v3 5/6] x86/time: implement PVCLOCK_TSC_STABLE_BIT

2016-08-30 Thread Joao Martins
On 08/30/2016 01:45 PM, Jan Beulich wrote: On 30.08.16 at 14:26, wrote: >> On 08/29/2016 11:06 AM, Jan Beulich wrote: >> On 26.08.16 at 17:44, wrote: On 08/25/2016 11:37 AM, Jan Beulich wrote: On 24.08.16 at 14:43, wrote: >> This patch proposes relying on host TSC sync

Re: [Xen-devel] [PATCH v3 5/6] x86/time: implement PVCLOCK_TSC_STABLE_BIT

2016-08-30 Thread Jan Beulich
>>> On 30.08.16 at 14:26, wrote: > On 08/29/2016 11:06 AM, Jan Beulich wrote: > On 26.08.16 at 17:44, wrote: >>> On 08/25/2016 11:37 AM, Jan Beulich wrote: >>> On 24.08.16 at 14:43, wrote: > This patch proposes relying on host TSC synchronization and > passthrough to the guest, w

Re: [Xen-devel] [PATCH v3 5/6] x86/time: implement PVCLOCK_TSC_STABLE_BIT

2016-08-30 Thread Joao Martins
On 08/29/2016 11:06 AM, Jan Beulich wrote: On 26.08.16 at 17:44, wrote: >> On 08/25/2016 11:37 AM, Jan Beulich wrote: >> On 24.08.16 at 14:43, wrote: This patch proposes relying on host TSC synchronization and passthrough to the guest, when running on a TSC-safe platform. On >>

Re: [Xen-devel] [PATCH v3 5/6] x86/time: implement PVCLOCK_TSC_STABLE_BIT

2016-08-29 Thread Jan Beulich
>>> On 26.08.16 at 17:44, wrote: > On 08/25/2016 11:37 AM, Jan Beulich wrote: > On 24.08.16 at 14:43, wrote: >>> This patch proposes relying on host TSC synchronization and >>> passthrough to the guest, when running on a TSC-safe platform. On >>> time_calibration we retrieve the platform time

Re: [Xen-devel] [PATCH v3 5/6] x86/time: implement PVCLOCK_TSC_STABLE_BIT

2016-08-26 Thread Joao Martins
On 08/25/2016 11:37 AM, Jan Beulich wrote: On 24.08.16 at 14:43, wrote: >> This patch proposes relying on host TSC synchronization and >> passthrough to the guest, when running on a TSC-safe platform. On >> time_calibration we retrieve the platform time in ns and the counter >> read by the cl

Re: [Xen-devel] [PATCH v3 5/6] x86/time: implement PVCLOCK_TSC_STABLE_BIT

2016-08-25 Thread Jan Beulich
>>> On 24.08.16 at 14:43, wrote: > This patch proposes relying on host TSC synchronization and > passthrough to the guest, when running on a TSC-safe platform. On > time_calibration we retrieve the platform time in ns and the counter > read by the clocksource that was used to compute system time.

[Xen-devel] [PATCH v3 5/6] x86/time: implement PVCLOCK_TSC_STABLE_BIT

2016-08-24 Thread Joao Martins
This patch proposes relying on host TSC synchronization and passthrough to the guest, when running on a TSC-safe platform. On time_calibration we retrieve the platform time in ns and the counter read by the clocksource that was used to compute system time. We introduce a new rendezous function whic