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[SPARC64]: Fix too early reference to %g6

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%g6 is not necessarily set to current_thread_info()
at sparc64_realfault_common.  So store the fault
code and address after we invoke etrap and %g6 is
properly set up.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-01-31 18:34:21 -08:00 committed by David S. Miller
parent 764afe2edb
commit 9bc657b28e
1 changed files with 5 additions and 2 deletions
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7
arch/sparc64/kernel/tsb.S
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@ -110,10 +110,13 @@ tsb_do_itlb_fault:
.globl sparc64_realfault_common
sparc64_realfault_common:
stb %g4, [%g6 + TI_FAULT_CODE] ! Save fault code
stx %g5, [%g6 + TI_FAULT_ADDR] ! Save fault address
/* fault code in %g4, fault address in %g5, etrap will
* preserve these two values in %l4 and %l5 respectively
*/
ba,pt %xcc, etrap ! Save trap state
1: rd %pc, %g7 ! ...
stb %l4, [%g6 + TI_FAULT_CODE] ! Save fault code
stx %l5, [%g6 + TI_FAULT_ADDR] ! Save fault address
call do_sparc64_fault ! Call fault handler
add %sp, PTREGS_OFF, %o0 ! Compute pt_regs arg
ba,pt %xcc, rtrap_clr_l6 ! Restore cpu state