02 Jul, 2011

1 commit

• 8dfe7ac96   ARM: entry: prefetch abort: tail-call the main prefetch abort handler ... Browse Code »

  Tail-call the main C prefetch abort handler code from the per-CPU
  helper code. Also note that the helper function becomes ABI
  compliant in terms of the registers preserved.

  Signed-off-by: Russell King

  Russell King

  2011-07-02 17:56:10 +0800  

30 Jun, 2011

1 commit

• 8b4186160   ARM: entry: prefetch abort helper: pass aborted pc in r4 rather than r0 ... Browse Code »

  This avoids unnecessary instructions for CPUs which implement the IFAR
  (instruction fault address register).

  Signed-off-by: Russell King

  Russell King

  2011-06-30 18:04:59 +0800  

03 Oct, 2009

1 commit

• 4fb284743   ARM: 5727/1: Pass IFSR register to do_PrefetchAbort() ... Browse Code »

  Instruction fault status register, IFSR, was introduced on ARMv6 to
  provide status information about the last insturction fault. It
  needed for proper prefetch abort handling.

  Now we have three prefetch abort model:

  * legacy - for CPUs before ARMv6. They doesn't provide neither
  IFSR nor IFAR. We simulate IFSR with section translation fault
  status for them to generalize code;
  * ARMv6 - provides IFSR, but not IFAR;
  * ARMv7 - provides both IFSR and IFAR.

  Signed-off-by: Kirill A. Shutemov
  Signed-off-by: Russell King

  Kirill A. Shutemov

  2009-10-03 05:34:32 +0800