Pull misc x86 fixes from Ingo Molnar:

 - make CR4 handling irq-safe, which bug vmware guests ran into

 - don't crash on early IRQs in Xen guests

 - don't crash secondary CPU bringup if #UD assisted WARN()ings are
   triggered

 - make X86_BUG_FXSAVE_LEAK optional on newer AMD CPUs that have the fix

 - fix AMD Fam17h microcode loading

 - fix broadcom_postcore_init() if ACPI is disabled

 - fix resume regression in __restore_processor_context()

 - fix Sparse warnings

 - fix a GCC-8 warning

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/vdso: Change time() prototype to match __vdso_time()
  x86: Fix Sparse warnings about non-static functions
  x86/power: Fix some ordering bugs in __restore_processor_context()
  x86/PCI: Make broadcom_postcore_init() check acpi_disabled
  x86/microcode/AMD: Add support for fam17h microcode loading
  x86/cpufeatures: Make X86_BUG_FXSAVE_LEAK detectable in CPUID on AMD
  x86/idt: Load idt early in start_secondary
  x86/xen: Support early interrupts in xen pv guests
  x86/tlb: Disable interrupts when changing CR4
  x86/tlb: Refactor CR4 setting and shadow write