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[SPARC64]: Fix return from trap on SUN4V.

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We need to set the global register set _AND_ disable
PSTATE_IE in %pstate.  The original patch sequence was
leaving PSTATE_IE enabled when returning to kernel mode,
oops.

This fixes the random register corruption being seen
on SUN4V.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-02-16 16:23:45 -08:00
parent 4ff7ac417d
commit af02bec662
1 changed files with 3 additions and 1 deletions
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4
arch/sparc64/kernel/rtrap.S
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@ -234,8 +234,10 @@ rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1
/* Normal globals are restored, go to trap globals. */
661: wrpr %g0, RTRAP_PSTATE_AG_IRQOFF, %pstate
.section .sun4v_1insn_patch, "ax"
nop
.section .sun4v_2insn_patch, "ax"
.word 661b
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
SET_GL(1)
.previous