remove xhat
The xhat infrastructure was added to support hardware such as the zulu
graphics card - hardware which had on-board MMUs.  The VM used the xhat code
to keep the CPU's and Zulu's page tables in-sync.  Since the only xhat user
was zulu (which is gone), we can safely remove it simplifying the whole VM
subsystem.
Assorted notes:
- AS_BUSY flag was used solely by xhat
remove zulu (XVR-4000)
XVR-4000 was a very expensive, very rare graphics card.

          --- old/usr/src/uts/sun4u/Makefile.files
          +++ new/usr/src/uts/sun4u/Makefile.files

   1    1  #
   2    2  # CDDL HEADER START
   3    3  #
   4    4  # The contents of this file are subject to the terms of the
   5    5  # Common Development and Distribution License (the "License").
   6    6  # You may not use this file except in compliance with the License.
   7    7  #
   8    8  # You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9    9  # or http://www.opensolaris.org/os/licensing.
  10   10  # See the License for the specific language governing permissions
  11   11  # and limitations under the License.
  12   12  #
  13   13  # When distributing Covered Code, include this CDDL HEADER in each
  14   14  # file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15   15  # If applicable, add the following below this CDDL HEADER, with the
  16   16  # fields enclosed by brackets "[]" replaced with your own identifying
  17   17  # information: Portions Copyright [yyyy] [name of copyright owner]
  18   18  #
  19   19  # CDDL HEADER END
  20   20  #
  21   21  
  22   22  #
  23   23  # Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  24   24  # Use is subject to license terms.
  25   25  #
  26   26  #       This Makefile defines all file modules for the directory uts/sun4u
  27   27  #       and it's children. These are the source files which are sun4u
  28   28  #       "implementation architecture" dependent.
  29   29  #
  30   30  
  31   31  #
  32   32  #       object lists
  33   33  #
  34   34  CORE_OBJS +=    atomic.o
  35   35  CORE_OBJS +=    bootops.o
  36   36  CORE_OBJS +=    cmp.o
  37   37  CORE_OBJS +=    cpc_hwreg.o
  38   38  CORE_OBJS +=    cpc_subr.o
  39   39  CORE_OBJS +=    cpupm.o
  40   40  CORE_OBJS +=    mach_cpu_states.o
  41   41  CORE_OBJS +=    mach_ddi_impl.o
  42   42  CORE_OBJS +=    ecc.o
  43   43  CORE_OBJS +=    fillsysinfo.o
  44   44  CORE_OBJS +=    forthdebug.o
  45   45  CORE_OBJS +=    hardclk.o
  46   46  CORE_OBJS +=    hat_sfmmu.o
  47   47  CORE_OBJS +=    hat_kdi.o
  48   48  CORE_OBJS +=    iscsi_boot.o
  49   49  CORE_OBJS +=    mach_copy.o
  50   50  CORE_OBJS +=    mach_kpm.o
  51   51  CORE_OBJS +=    mach_mp_startup.o
  52   52  CORE_OBJS +=    mach_mp_states.o
  53   53  CORE_OBJS +=    mach_sfmmu.o
  54   54  CORE_OBJS +=    mach_startup.o
  55   55  CORE_OBJS +=    mach_subr_asm.o
  56   56  CORE_OBJS +=    mach_trap.o

  57   57  CORE_OBJS +=    mach_vm_dep.o
  58   58  CORE_OBJS +=    mach_xc.o
  59   59  CORE_OBJS +=    mem_cage.o
  60   60  CORE_OBJS +=    mem_config.o
  61   61  CORE_OBJS +=    memlist_new.o
  62   62  CORE_OBJS +=    memscrub.o
  63   63  CORE_OBJS +=    memscrub_asm.o
  64   64  CORE_OBJS +=    ppage.o
  65   65  CORE_OBJS +=    sfmmu_kdi.o
  66   66  CORE_OBJS +=    swtch.o
  67      -CORE_OBJS +=    xhat_sfmmu.o
  68   67  
  69   68  #
  70   69  #       Some objects must be linked at the front of the image (or
  71   70  #       near other objects at the front of the image).
  72   71  #
  73   72  SPECIAL_OBJS += trap_table.o
  74   73  SPECIAL_OBJS += locore.o
  75   74  SPECIAL_OBJS += mach_locore.o
  76   75  SPECIAL_OBJS += sfmmu_asm.o
  77   76  SPECIAL_OBJS += mach_sfmmu_asm.o

  78   77  SPECIAL_OBJS += interrupt.o
  79   78  SPECIAL_OBJS += mach_interrupt.o
  80   79  SPECIAL_OBJS += wbuf.o
  81   80  
  82   81  #
  83   82  #                       driver modules
  84   83  #
  85   84  ROOTNEX_OBJS    += mach_rootnex.o
  86   85  UPA64S_OBJS     += upa64s.o
  87   86  SYSIO_SBUS_OBJS += iommu.o sysioerr.o sysiosbus.o iocache.o
  88   87  PX_OBJS         += px_asm_4u.o px_err.o px_hlib.o px_lib4u.o px_tools_4u.o
  89   88  PCI_COMMON_OBJS += pci.o pci_util.o pci_dma.o pci_devctl.o \
  90   89                          pci_fdvma.o pci_iommu.o pci_sc.o pci_debug.o \
  91   90                          pci_cb.o pci_ib.o pci_ecc.o pci_pbm.o pci_intr.o \
  92   91                          pci_space.o pci_counters.o pci_axq.o \
  93   92                          pci_fm.o pci_reloc.o pci_tools.o pci_asm.o
  94   93  RMCLOMV_OBJS    += rmclomv.o
  95   94  
  96   95  PSYCHO_PCI_OBJS += $(PCI_COMMON_OBJS) pcipsy.o
  97   96  SCHIZO_PCI_OBJS += $(PCI_COMMON_OBJS) pcisch_asm.o pcisch.o pcix.o
  98   97  SIMBA_PCI_OBJS  += simba.o
  99   98  DB21554_OBJS    += db21554.o
 100   99  US_OBJS         += cpudrv.o cpudrv_mach.o
 101  100  POWER_OBJS      += power.o
 102  101  EPIC_OBJS       += epic.o
 103  102  GRBEEP_OBJS     += grbeep.o
 104  103  ADM1031_OBJS    += adm1031.o
 105  104  ICS951601_OBJS  += ics951601.o
 106  105  PPM_OBJS        += ppm_subr.o ppm.o ppm_plat.o
 107  106  OPLCFG_OBJS     += opl_cfg.o
 108  107  PCF8584_OBJS    += pcf8584.o
 109  108  PCA9556_OBJS    += pca9556.o
 110  109  ADM1026_OBJS    += adm1026.o
 111  110  BBC_OBJS        += bbc_beep.o
 112  111  TDA8444_OBJS    += tda8444.o
 113  112  MAX1617_OBJS    += max1617.o
 114  113  SEEPROM_OBJS    += seeprom.o
 115  114  I2C_SVC_OBJS    += i2c_svc.o
 116  115  SMBUS_OBJS      += smbus.o
 117  116  SCHPPM_OBJS     += schppm.o
 118  117  MC_OBJS         += mc-us3.o mc-us3_asm.o
 119  118  MC_US3I_OBJS    += mc-us3i.o
 120  119  GPIO_87317_OBJS += gpio_87317.o
 121  120  ISADMA_OBJS     += isadma.o
 122  121  SBBC_OBJS       += sbbc.o
 123  122  LM75_OBJS       += lm75.o
 124  123  LTC1427_OBJS    += ltc1427.o
 125  124  PIC16F747_OBJS  += pic16f747.o
 126  125  PIC16F819_OBJS  += pic16f819.o
 127  126  PCF8574_OBJS    += pcf8574.o

 128  127  PCF8591_OBJS    += pcf8591.o
 129  128  SSC050_OBJS     += ssc050.o
 130  129  SSC100_OBJS     += ssc100.o
 131  130  PMUBUS_OBJS     += pmubus.o
 132  131  PMUGPIO_OBJS    += pmugpio.o
 133  132  PMC_OBJS        += pmc.o
 134  133  TRAPSTAT_OBJS   += trapstat.o
 135  134  I2BSC_OBJS      += i2bsc.o
 136  135  GPTWOCFG_OBJS   += gptwocfg.o
 137  136  GPTWO_CPU_OBJS  += gptwo_cpu.o
 138      -ZULUVM_OBJS     += zuluvm.o zulu_asm.o zulu_hat.o zulu_hat_asm.o
 139  137  
 140  138  JBUSPPM_OBJS    += jbusppm.o 
 141  139  RMC_COMM_OBJS   += rmc_comm.o rmc_comm_crctab.o rmc_comm_dp.o rmc_comm_drvintf.o
 142  140  RMCADM_OBJS     += rmcadm.o
 143  141  MEM_CACHE_OBJS  += mem_cache.o panther_asm.o
 144  142  
 145  143  #
 146  144  #                       kernel cryptographic framework
 147  145  #
 148  146  

 149  147  BIGNUM_PSR_OBJS += mont_mulf_kernel_v9.o
 150  148  
 151  149  AES_OBJS        += aes.o aes_impl.o aes_modes.o aes_crypt_asm.o
 152  150  
 153  151  DES_OBJS        += des_crypt_asm.o
 154  152  
 155  153  ARCFOUR_OBJS    += arcfour.o arcfour_crypt.o arcfour_crypt_asm.o
 156  154  
 157  155  SHA1_OBJS       += sha1_asm.o
 158  156  
 159  157  #
 160  158  #                       tod modules
 161  159  #
 162  160  TODMOSTEK_OBJS  += todmostek.o
 163  161  TODDS1287_OBJS  += todds1287.o
 164  162  TODDS1337_OBJS  += todds1337.o
 165  163  TODSTARFIRE_OBJS += todstarfire.o
 166  164  TODSTARCAT_OBJS += todstarcat.o
 167  165  TODBLADE_OBJS   += todblade.o
 168  166  TODM5819_OBJS   += todm5819.o
 169  167  TODM5819P_RMC_OBJS      += todm5819p_rmc.o
 170  168  TODBQ4802_OBJS  += todbq4802.o
 171  169  TODSG_OBJS      += todsg.o
 172  170  TODOPL_OBJS     = todopl.o
 173  171  
 174  172  #
 175  173  #                       Misc modules
 176  174  #
 177  175  OBPSYM_OBJS     += obpsym.o obpsym_1275.o
 178  176  BOOTDEV_OBJS    += bootdev.o
 179  177  
 180  178  CPR_FIRST_OBJS  = cpr_resume_setup.o
 181  179  CPR_IMPL_OBJS   = cpr_impl.o
 182  180  
 183  181  SBD_OBJS        += sbd.o sbd_cpu.o sbd_mem.o sbd_io.o
 184  182  
 185  183  PCIE_MISC_OBJS += pci_cfgacc_4u.o pci_cfgacc.o
 186  184  
 187  185  #
 188  186  #                       Brand modules
 189  187  #
 190  188  SN1_BRAND_OBJS  = sn1_brand.o sn1_brand_asm.o
 191  189  S10_BRAND_OBJS  = s10_brand.o s10_brand_asm.o
 192  190  
 193  191  #
 194  192  #                       Performance Counter BackEnd (PCBE) Modules
 195  193  #
 196  194  US_PCBE_OBJS    = us234_pcbe.o
 197  195  OPL_PCBE_OBJS   = opl_pcbe.o
 198  196  
 199  197  #
 200  198  #                       cpu modules
 201  199  #
 202  200  CPU_OBJ         += $(OBJS_DIR)/mach_cpu_module.o
 203  201  SPITFIRE_OBJS   = spitfire.o spitfire_asm.o spitfire_copy.o spitfire_kdi.o common_asm.o
 204  202  HUMMINGBIRD_OBJS= $(SPITFIRE_OBJS)
 205  203  US3_CMN_OBJS    = us3_common.o us3_common_mmu.o us3_common_asm.o us3_kdi.o cheetah_copy.o common_asm.o
 206  204  CHEETAH_OBJS    = $(US3_CMN_OBJS) us3_cheetah.o us3_cheetah_asm.o
 207  205  CHEETAHPLUS_OBJS= $(US3_CMN_OBJS) us3_cheetahplus.o us3_cheetahplus_asm.o
 208  206  JALAPENO_OBJS   = $(US3_CMN_OBJS) us3_jalapeno.o us3_jalapeno_asm.o
 209  207  OLYMPUS_OBJS    = opl_olympus.o opl_olympus_asm.o opl_olympus_copy.o \
 210  208                    opl_kdi.o common_asm.o
 211  209  
 212  210  #
 213  211  #                       platform module
 214  212  #
 215  213  PLATMOD_OBJS    = platmod.o
 216  214  
 217  215  #       Section 3:      Misc.
 218  216  #
 219  217  ALL_DEFS        += -Dsun4u
 220  218  INC_PATH        += -I$(UTSBASE)/sun4u
 221  219  
 222  220  #
 223  221  # Since assym.h is a derived file, the dependency must be explicit for
 224  222  # all files including this file. (This is only actually required in the
 225  223  # instance when the .make.state file does not exist.) It may seem that
 226  224  # the lint targets should also have a similar dependency, but they don't
 227  225  # since only C headers are included when #defined(lint) is true.
 228  226  #
 229  227  ASSYM_DEPS      += mach_locore.o
 230  228  ASSYM_DEPS      += module_sfmmu_asm.o
 231  229  ASSYM_DEPS      += spitfire_asm.o spitfire_copy.o
 232  230  ASSYM_DEPS      += cheetah_asm.o cheetah_copy.o
 233  231  ASSYM_DEPS      += mach_subr_asm.o swtch.o
 234  232  ASSYM_DEPS      += mach_interrupt.o mach_xc.o
 235  233  ASSYM_DEPS      += trap_table.o wbuf.o
 236  234  ASSYM_DEPS      += mach_sfmmu_asm.o sfmmu_asm.o memscrub_asm.o
 237  235  ASSYM_DEPS      += mach_copy.o

XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX