linux-kernel - [GIT PULL] Second batch of KVM changes for 4.4

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Date:	Tue, 10 Nov 2015 19:31:40 +0100
From:	Paolo Bonzini <pbonzini@...hat.com>
To:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:	gleb@...nel.org
Subject: [GIT PULL] Second batch of KVM changes for 4.4

Linus,

The following changes since commit a3eaa8649e4c6a6afdafaa04b9114fb230617bb1:

  KVM: VMX: Fix commit which broke PML (2015-11-05 11:34:11 +0100)

are available in the git repository at:

  git://git.kernel.org/pub/scm/virt/kvm/kvm.git tags/for-linus

for you to fetch changes up to a96036b8ef7df9f10cd575c0d78359bd33188e8e:

  KVM: x86: rename update_db_bp_intercept to update_bp_intercept (2015-11-10 12:06:25 +0100)

----------------------------------------------------------------
Three changes:

- x86: work around two nasty cases where a benign exception occurs while
another is being delivered.  The endless stream of exceptions causes an
infinite loop in the processor, which not even NMIs or SMIs can interrupt;
in the virt case, there is no possibility to exit to the host either.

- x86: support for Skylake per-guest TSC rate.  Long supported by AMD,
the patches mostly move things from there to common arch/x86/kvm/ code.

- generic: remove local_irq_save/restore from the guest entry and exit
paths when context tracking is enabled.  The patches are a few months
old, but we discussed them again at kernel summit.  Andy will pick up
from here and, in 4.5, try to remove it from the user entry/exit paths.

----------------------------------------------------------------
Eric Northup (1):
      KVM: x86: work around infinite loop in microcode when #AC is delivered

Haozhong Zhang (12):
      KVM: x86: Collect information for setting TSC scaling ratio
      KVM: x86: Add a common TSC scaling ratio field in kvm_vcpu_arch
      KVM: x86: Add a common TSC scaling function
      KVM: x86: Replace call-back set_tsc_khz() with a common function
      KVM: x86: Replace call-back compute_tsc_offset() with a common function
      KVM: x86: Move TSC scaling logic out of call-back adjust_tsc_offset()
      KVM: x86: Move TSC scaling logic out of call-back read_l1_tsc()
      KVM: x86: Use the correct vcpu's TSC rate to compute time scale
      KVM: VMX: Enable and initialize VMX TSC scaling
      KVM: VMX: Setup TSC scaling ratio when a vcpu is loaded
      KVM: VMX: Use a scaled host TSC for guest readings of MSR_IA32_TSC
      KVM: VMX: Dump TSC multiplier in dump_vmcs()

Paolo Bonzini (6):
      KVM: x86: merge handle_mmio_page_fault and handle_mmio_page_fault_common
      KVM: x86: declare a few variables as __read_mostly
      context_tracking: remove duplicate enabled check
      context_tracking: avoid irq_save/irq_restore on guest entry and exit
      KVM: svm: unconditionally intercept #DB
      KVM: x86: rename update_db_bp_intercept to update_bp_intercept

 arch/x86/include/asm/kvm_host.h  |  27 +++----
 arch/x86/include/asm/vmx.h       |   3 +
 arch/x86/include/uapi/asm/svm.h  |   1 +
 arch/x86/kvm/lapic.c             |   4 +-
 arch/x86/kvm/mmu.c               |  20 ++---
 arch/x86/kvm/mmu.h               |   6 +-
 arch/x86/kvm/paging_tmpl.h       |   3 +-
 arch/x86/kvm/svm.c               | 140 ++++++----------------------------
 arch/x86/kvm/vmx.c               |  71 +++++++++--------
 arch/x86/kvm/x86.c               | 159 +++++++++++++++++++++++++++++++++------
 include/linux/context_tracking.h |  12 ++-
 include/linux/kvm_host.h         |   1 +
 include/linux/math64.h           |  80 ++++++++++++++++++++
 kernel/context_tracking.c        |  80 ++++++++++----------
 14 files changed, 352 insertions(+), 255 deletions(-)
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