Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linuxHEADtorvalds/mastertorvalds/HEADmaster

Pull arm64 fixes from Catalin Marinas:

 - Explicitly encode the XZR register if the value passed to
   write_sysreg_s() is 0.

   The GIC CDEOI instruction is encoded as a system register write with
   XZR as the source register. However, clang does not honour the "Z"
   register constraint, leading to incorrect code generation

 - Ensure the interrupts (DAIF.IF) are unmasked when completing
   single-step of a suspended breakpoint before calling
   exit_to_user_mode().

   With pseudo-NMIs, interrupts are (additionally) masked at the PMR_EL1
   register, handled by local_irq_*()

* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
  arm64: debug: always unmask interrupts in el0_softstp()
  arm64/sysreg: Fix GIC CDEOI instruction encoding

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