linux-kernel - [PATCH v2 0/4] x86: KVM vdso and clock improvements

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Date:	Sun, 20 Dec 2015 03:05:40 -0800
From:	Andy Lutomirski <luto@...nel.org>
To:	x86@...nel.org, Marcelo Tosatti <mtosatti@...hat.com>,
	Radim Krcmar <rkrcmar@...hat.com>,
	Paolo Bonzini <pbonzini@...hat.com>
Cc:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
	Alexander Graf <agraf@...e.de>,
	Andy Lutomirski <luto@...nel.org>
Subject: [PATCH v2 0/4] x86: KVM vdso and clock improvements

x86: KVM vdso and clock improvements

NB: patch 1 doesn't really belong here, but it makes this a lot
easier for me to test.  Patch 1, if it's okay at all, should go
though the kvm tree.  The rest should probably go through
tip:x86/vdso once they're reviewed.

I'll do a followup to enable vdso pvclock on 32-bit guests.
I'm not currently set up to test it.  (The KVM people could also
do it very easily on top of these patches.)

Changes from v1:
 - Dropped patch 1
 - Added Paolo's review and acks
 - Fixed a build issue on some configs

Andy Lutomirski (4):
  x86, vdso, pvclock: Simplify and speed up the vdso pvclock reader
  x86/vdso: Get pvclock data from the vvar VMA instead of the fixmap
  x86/vdso: Remove pvclock fixmap machinery
  x86/vdso: Enable vdso pvclock access on all vdso variants

 arch/x86/entry/vdso/vclock_gettime.c  | 151 ++++++++++++++++------------------
 arch/x86/entry/vdso/vdso-layout.lds.S |   3 +-
 arch/x86/entry/vdso/vdso2c.c          |   3 +
 arch/x86/entry/vdso/vma.c             |  14 ++++
 arch/x86/include/asm/fixmap.h         |   5 --
 arch/x86/include/asm/pvclock.h        |  14 ++--
 arch/x86/include/asm/vdso.h           |   1 +
 arch/x86/kernel/kvmclock.c            |  11 ++-
 arch/x86/kernel/pvclock.c             |  24 ------
 9 files changed, 107 insertions(+), 119 deletions(-)

-- 
2.5.0

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