[PATCHv5 0/4] improve speed of "rep ins" emulation

[Gleb Natapov <gleb@redhat.com>]

And now for something completely different.

So this series (or rather the last patch of it) takes different approach
to "rep ins" optimization. Instead of writing separate fast path for
it do the fast path inside emulator itself. This way nobody can say the
code is not reused!

Patch 1,2 are now, strictly speaking, not needed, but I think this is still
nice cleanup and, in case of patch 1, eliminates some ifs at each KVM_RUN ioctl.
 
Gleb Natapov (4):
  Provide userspace IO exit completion callback.
  KVM: emulator: make x86 emulation modes enum instead of defines
  KVM: emulator: string_addr_inc() cleanup
  KVM: emulator: optimize "rep ins" handling.

 arch/x86/include/asm/kvm_emulate.h |   26 +++++-----
 arch/x86/include/asm/kvm_host.h    |    1 +
 arch/x86/kvm/emulate.c             |   48 ++++++++++++++-----
 arch/x86/kvm/x86.c                 |   92 +++++++++++++++++++++---------------
 4 files changed, 104 insertions(+), 63 deletions(-)

-- 
1.7.10