4664 CPU->cpu_pri_data hasn't been used for years

*** 141,154 ****
           */
  
  uchar_t apic_ipltopri[MAXIPL + 1];      /* unix ipl to apic pri */
          /* The taskpri to be programmed into apic to mask given ipl */
  
- #if defined(__amd64)
- static unsigned char dummy_cpu_pri[MAXIPL + 1];
- #endif
- 
  /*
   * Correlation of the hardware vector to the IPL in use, initialized
   * from apic_vectortoipl[] in apic_init().  The final IPLs may not correlate
   * to the IPLs in apic_vectortoipl on some systems that share interrupt lines
   * connected to errata-stricken IOAPICs
--- 141,150 ----
*** 298,313 ****
          }
          for (; j < MAXIPL + 1; j++)
                  /* fill up any empty ipltopri slots */
                  apic_ipltopri[j] = (i << APIC_IPL_SHIFT) + APIC_BASE_VECT;
          apic_init_common();
! #if defined(__amd64)
!         CPU->cpu_pri_data = dummy_cpu_pri;
! #else
          if (cpuid_have_cr8access(CPU))
                  apic_have_32bit_cr8 = 1;
! #endif  /* __amd64 */
  }
  
  static void
  apic_init_intr(void)
  {
--- 294,308 ----
          }
          for (; j < MAXIPL + 1; j++)
                  /* fill up any empty ipltopri slots */
                  apic_ipltopri[j] = (i << APIC_IPL_SHIFT) + APIC_BASE_VECT;
          apic_init_common();
! 
! #if !defined(__amd64)
          if (cpuid_have_cr8access(CPU))
                  apic_have_32bit_cr8 = 1;
! #endif
  }
  
  static void
  apic_init_intr(void)
  {