1. 30 Jul, 2012 2 commits
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  7. 14 Jun, 2012 1 commit
    • Heiko Carstens's avatar
      s390/smp: make absolute lowcore / cpu restart parameter accesses more robust · fbe76568
      Heiko Carstens authored
      Setting the cpu restart parameters is done in three different fashions:
      - directly setting the four parameters individually
      - copying the four parameters with memcpy (using 4 * sizeof(long))
      - copying the four parameters using a private structure
      
      In addition code in entry*.S relies on a certain order of the restart
      members of struct _lowcore.
      
      Make all of this more robust to future changes by adding a
      mem_absolute_assign(dest, val) define, which assigns val to dest
      using absolute addressing mode. Also the load multiple instructions
      in entry*.S have been split into separate load instruction so the
      order of the struct _lowcore members doesn't matter anymore.
      
      In addition move the prototypes of memcpy_real/absolute from uaccess.h
      to processor.h. These memcpy* variants are not related to uaccess at all.
      string.h doesn't seem to match as well, so lets use processor.h.
      
      Also replace the eight byte array in struct _lowcore which represents a
      misaliged u64 with a u64. The compiler will always create code that
      handles the misaligned u64 correctly.
      Signed-off-by: default avatarHeiko Carstens <heiko.carstens@de.ibm.com>
      Signed-off-by: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
      fbe76568
  8. 13 Jun, 2012 3 commits
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  11. 30 May, 2012 7 commits