Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* target/i386: implement SHA instructions
* target/i386: check CPUID_PAE to determine 36 bit processor address space
* target/i386: improve validation of AVX instructions
* require Linux 4.4 for KVM

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# gpg:                using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
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# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
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* tag 'for-upstream' of https://gitlab.com/bonzini/qemu

: (24 commits)
  kvm: i8254: require KVM_CAP_PIT2 and KVM_CAP_PIT_STATE2
  kvm: i386: require KVM_CAP_SET_IDENTITY_MAP_ADDR
  kvm: i386: require KVM_CAP_ADJUST_CLOCK
  kvm: i386: require KVM_CAP_MCE
  kvm: i386: require KVM_CAP_SET_VCPU_EVENTS and KVM_CAP_X86_ROBUST_SINGLESTEP
  kvm: i386: require KVM_CAP_XSAVE
  kvm: i386: require KVM_CAP_DEBUGREGS
  kvm: i386: move KVM_CAP_IRQ_ROUTING detection to kvm_arch_required_capabilities
  kvm: unify listeners for PIO address space
  kvm: require KVM_CAP_IOEVENTFD and KVM_CAP_IOEVENTFD_ANY_LENGTH
  kvm: assume that many ioeventfds can be created
  kvm: drop reference to KVM_CAP_PCI_2_3
  kvm: require KVM_IRQFD for kernel irqchip
  kvm: require KVM_IRQFD for kernel irqchip
  kvm: require KVM_CAP_SIGNAL_MSI
  kvm: require KVM_CAP_INTERNAL_ERROR_DATA
  kvm: remove unnecessary stub
  target/i386: check CPUID_PAE to determine 36 bit processor address space
  target/i386: validate VEX.W for AVX instructions
  target/i386: group common checks in the decoding phase
  ...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>