linux-kernel - [PATCH v7 0/5] x86/xen: pvclock vdso support

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20171019133918.18367-1-joao.m.martins@oracle.com>
Date:   Thu, 19 Oct 2017 14:39:13 +0100
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 v7 0/5] x86/xen: pvclock vdso support

Hey,

[ I found an issue with ptp_kvm modinit with my series, so resending with that
  fixed. ]

This is take 7 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.

[ Only patches 1 and 2 requires ack/review - the rest is acked/reviewed ]

Changelog is 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/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          |  3 ++
 include/xen/interface/vcpu.h   | 42 ++++++++++++++++++
 9 files changed, 175 insertions(+), 15 deletions(-)

-- 
2.11.0