From: Marcelo Tosatti <mtosatti@redhat.com>
To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
Radim Krcmar <rkrcmar@redhat.com>,
Richard Cochran <richardcochran@gmail.com>,
Miroslav Lichvar <mlichvar@redhat.com>
Subject: [patch 0/5] KVM virtual PTP driver (v3)
Date: Fri, 20 Jan 2017 10:20:25 -0200 [thread overview]
Message-ID: <20170120122025.665985919@redhat.com> (raw)
This patchset implements a virtual PTP driver which allows guest to sync
its clock to the host clock with high precision
(error is < 1us on an idle guest).
Changelog from v2
Cross timestamping, emulation of PTP_SYS_OFFSET with cross timestamping
(Paolo, Miroslav, Radim).
Changelog from v1
Patch1:
v2: unify nsec_base (Radim)
Patch2:
v2: improve documentation (Radim)
change hypercall name to KVM_HC_CLOCK_PAIRING (Radim)
increase padding size
Patch3:
v2: check for kvmclock (Radim)
initialize global variables before device registration (Radim)
PHC0 0 3 377 7 -141ns[ +234ns] +/- 7ns
#* PHC0 0 3 377 5 -197ns[ -403ns] +/- 3ns
#* PHC0 0 3 377 11 +157ns[ +264ns] +/- 3ns
#* PHC0 0 3 377 9 +92ns[ +304ns] +/- 2ns
#* PHC0 0 3 377 7 -102ns[ -164ns] +/- 3ns
#* PHC0 0 3 377 5 -157ns[ -269ns] +/- 2ns
#* PHC0 0 3 377 10 -63ns[ -98ns] +/- 2ns
#* PHC0 0 3 377 8 +351ns[ +399ns] +/- 2ns
#* PHC0 0 3 377 6 +385ns[ +399ns] +/- 4ns
#* PHC0 0 3 377 4 -133ns[ -110ns] +/- 6ns
#* PHC0 0 3 377 10 -59ns[ -90ns] +/- 3ns
#* PHC0 0 3 377 8 -90ns[ +381ns] +/- 9ns
#* PHC0 0 3 377 6 +6ns[ +216ns] +/- 6ns
#* PHC0 0 3 377 4 +166ns[ -666ns] +/- 11ns
#* PHC0 0 3 377 10 -18ns[ +323ns] +/- 10ns
#* PHC0 0 3 377 8 -12ns[ +121ns] +/- 5ns
#* PHC0 0 3 377 5 +4ns[ +218ns] +/- 7ns
#* PHC0 0 3 377 4 +162ns[ -683ns] +/- 11ns
#* PHC0 0 3 377 10 -82ns[ +310ns] +/- 12ns
#* PHC0 0 3 377 7 +5ns[ -320ns] +/- 9ns
#* PHC0 0 3 377 5 -13ns[ +165ns] +/- 7ns
#* PHC0 0 3 377 3 +6ns[ +105ns] +/- 2ns
#* PHC0 0 3 377 9 -19ns[ -67ns] +/- 3ns
#* PHC0 0 3 377 8 +89ns[ +181ns] +/- 3ns
#* PHC0 0 3 377 6 +93ns[ +168ns] +/- 2ns
#* PHC0 0 3 377 4 +100ns[ +154ns] +/- 2ns
#* PHC0 0 3 377 10 -249ns[ +180ns] +/- 7ns
#* PHC0 0 3 377 8 +158ns[ -582ns] +/- 22ns
#* PHC0 0 3 377 6 +10ns[ +213ns] +/- 9ns
#* PHC0 0 3 377 3 -35ns[ +258ns] +/- 5ns
#* PHC0 0 3 377 10 +25ns[ -620ns] +/- 8ns
#* PHC0 0 3 377 7 +13ns[ +153ns] +/- 2ns
next reply other threads:[~2017-01-20 12:27 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-20 12:20 Marcelo Tosatti [this message]
2017-01-20 12:20 ` [patch 1/5] KVM: x86: provide realtime host clock via vsyscall notifiers Marcelo Tosatti
2017-01-20 12:20 ` [patch 2/5] KVM: x86: add KVM_HC_CLOCK_OFFSET hypercall Marcelo Tosatti
2017-01-20 12:20 ` [patch 3/5] kvmclock: export kvmclock clocksource pointer Marcelo Tosatti
2017-01-20 12:55 ` Paolo Bonzini
2017-01-20 12:20 ` [patch 4/5] PTP: add PTP_SYS_OFFSET emulation via cross timestamps infrastructure Marcelo Tosatti
2017-01-20 12:55 ` Paolo Bonzini
2017-01-20 13:07 ` Marcelo Tosatti
2017-01-20 13:36 ` Paolo Bonzini
2017-01-20 13:52 ` Marcelo Tosatti
2017-01-20 14:02 ` Radim Krcmar
2017-01-20 14:23 ` Paolo Bonzini
2017-01-20 14:31 ` Miroslav Lichvar
2017-01-20 18:30 ` Radim Krcmar
2017-01-20 20:25 ` Richard Cochran
2017-01-23 13:19 ` Marcelo Tosatti
2017-01-23 18:44 ` Richard Cochran
2017-01-23 19:44 ` Paolo Bonzini
2017-01-24 5:43 ` Richard Cochran
2017-01-24 11:23 ` Marcelo Tosatti
2017-01-24 11:35 ` Richard Cochran
2017-01-23 23:06 ` Marcelo Tosatti
2017-01-24 5:32 ` Richard Cochran
2017-01-24 8:15 ` Miroslav Lichvar
2017-01-20 12:20 ` [patch 5/5] PTP: add kvm PTP driver Marcelo Tosatti
2017-01-20 12:58 ` Paolo Bonzini
2017-01-20 13:11 ` Marcelo Tosatti
2017-01-20 14:12 ` Radim Krcmar
2017-01-20 14:20 ` Radim Krcmar
2017-01-20 15:00 ` Marcelo Tosatti
2017-01-20 17:11 ` Paolo Bonzini
2017-01-20 18:08 ` Radim Krcmar
2017-01-20 19:10 ` Marcelo Tosatti
2017-01-21 8:02 ` Paolo Bonzini
2017-01-20 13:10 ` [patch 0/5] KVM virtual PTP driver (v3) Paolo Bonzini
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