linux-kernel - [PATCH v8 0/5] x86/xen: pvclock vdso support

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Message-Id: <20171108171958.23921-1-joao.m.martins@oracle.com>
Date:   Wed,  8 Nov 2017 17:19:53 +0000
From:   Joao Martins <joao.m.martins@...cle.com>
To:     linux-kernel@...r.kernel.org, xen-devel@...ts.xenproject.org
Cc:     Joao Martins <joao.m.martins@...cle.com>,
        Boris Ostrovsky <boris.ostrovsky@...cle.com>,
        Juergen Gross <jgross@...e.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>,
        "H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
        Andy Lutomirski <luto@...capital.net>
Subject: [PATCH v8 0/5] x86/xen: pvclock vdso support

Hey,

This is take 8 for vdso for Xen. PVCLOCK_TSC_STABLE_BIT can be set starting Xen
 4.8 which is required for vdso time related calls. In order to have it on, you
need to have the hypervisor clocksource be TSC e.g. with the following boot
params "clocksource=tsc tsc=stable:socket".

Series is structured as following:

Patch 1 probes for kvm guest in ptp_kvm in the event having
        pvclock_pvti_cpu0_va() moved to common pvclock (on the next patch)
Patch 2 streamlines pvti page get/set in pvclock for both of its users
Patch 3,4 registers the pvti page on Xen and sets it in pvclock accordingly
Patch 5 adds a file to KVM/Xen maintainers for tracking pvclock ABI changes.

All patches appear to be Acked by its respective maintainers.

The difference to v7 is adding the Acks on patches 1 and 2 plus the adjustment
from Thomas to rename the getter function. (Changelog in individual patches)

Thanks,
Joao

Joao Martins (5):
  ptp_kvm: probe for kvm guest availability
  x86/pvclock: add setter for pvclock_pvti_cpu0_va
  x86/xen/time: set pvclock flags on xen_time_init()
  x86/xen/time: setup vcpu 0 time info page
  MAINTAINERS: xen, kvm: track pvclock-abi.h changes

 MAINTAINERS                    |  2 +
 arch/x86/entry/vdso/vma.c      |  2 +-
 arch/x86/include/asm/pvclock.h | 19 +++++----
 arch/x86/kernel/kvmclock.c     |  7 +--
 arch/x86/kernel/pvclock.c      | 14 ++++++
 arch/x86/xen/suspend.c         |  4 ++
 arch/x86/xen/time.c            | 97 ++++++++++++++++++++++++++++++++++++++++++
 arch/x86/xen/xen-ops.h         |  2 +
 drivers/ptp/ptp_kvm.c          |  5 ++-
 include/xen/interface/vcpu.h   | 42 ++++++++++++++++++
 10 files changed, 177 insertions(+), 17 deletions(-)

-- 
2.11.0