[PATCH v4 0/2] KVM: x86: Add SYNC REGS functionality.

[Ken Hofsass <hofsass@google.com>]

This patch set adds KVM_CAP_SYNC_REGS functionality for x86.

Changes from v3 <https://www.spinics.net/lists/kvm/msg162834.html>
SYNC_REGS_SIZE_BYTES patch (1/2)
- No changes.
KVM_CAP_SYNC_REGS patch (2/2)
- KVM_SYNC_X86_NUM_FIELDS removed.
- Avoid overwriting error code in kvm_arch_vcpu_ioctl_run.
- Shortened __kvm_arch_vcpu_ioctl_{{set,get}_{sregs,regs}
  to __{set,get}_{sregs,regs}.
- Renamed sync_regs/store_regs to match s390.

Changes from v2 <https://patchwork.kernel.org/patch/10161941/>
- v3 splits v2 changes into two separate patches, moving
  SYNC_REGS_SIZE_BYTES #define change to its own patch.
- Refactors kvm_arch_vcpu_ioctl_set_{regs,sregs} to avoid
  redundant calls to both vcpu_load and vcpu_put in their
  usage by sync regs code.

Please see the individual patches for details.

Ken Hofsass (2):
  KVM: x86: add SYNC_REGS_SIZE_BYTES #define.
  KVM: x86: KVM_CAP_SYNC_REGS

 Documentation/virtual/kvm/api.txt |  42 ++++++++++++++-
 arch/x86/include/uapi/asm/kvm.h   |  19 ++++++-
 arch/x86/kvm/x86.c                | 108 +++++++++++++++++++++++++++++++++-----
 include/uapi/linux/kvm.h          |   6 ++-
 4 files changed, 158 insertions(+), 17 deletions(-)

-- 
2.16.0.rc1.238.g530d649a79-goog