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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-05 21:29:28 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:11:48 -0800 |
| commit | 936f482af1743141d637483ec10eb881537c26dc (patch) | |
| tree | 913da89a4d9f4038c510c9ecf2f5957b0f6d167f /arch/sparc64/kernel/rtrap.S | |
| parent | 6e02493a7f33ac89e698b980a657d77ab2749eaf (diff) | |
| download | blackbird-op-linux-936f482af1743141d637483ec10eb881537c26dc.tar.gz blackbird-op-linux-936f482af1743141d637483ec10eb881537c26dc.zip | |
[SPARC64]: Add initial code to twiddle %gl on trap entry/exit.
Instead of setting/clearing PSTATE_AG we have to change
the %gl register value on sun4v.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/rtrap.S')
| -rw-r--r-- | arch/sparc64/kernel/rtrap.S | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S index ecfbbdc56125..e6130956307f 100644 --- a/arch/sparc64/kernel/rtrap.S +++ b/arch/sparc64/kernel/rtrap.S @@ -230,7 +230,14 @@ rt_continue: ldx [%sp + PTREGS_OFF + PT_V9_G1], %g1 1: ldx [%sp + PTREGS_OFF + PT_V9_G6], %g6 ldx [%sp + PTREGS_OFF + PT_V9_G7], %g7 - wrpr %g0, RTRAP_PSTATE_AG_IRQOFF, %pstate + + /* Normal globals are restored, go to trap globals. */ +661: wrpr %g0, RTRAP_PSTATE_AG_IRQOFF, %pstate + .section .gl_1insn_patch, "ax" + .word 661b + SET_GL(1) + .previous + ldx [%sp + PTREGS_OFF + PT_V9_I0], %i0 ldx [%sp + PTREGS_OFF + PT_V9_I1], %i1 @@ -304,6 +311,13 @@ user_rtt_fill_fixup: mov %g6, %l1 wrpr %g0, 0x0, %tl wrpr %g0, RTRAP_PSTATE, %pstate + +661: nop + .section .gl_1insn_patch, "ax" + .word 661b + SET_GL(0) + .previous + mov %l1, %g6 ldx [%g6 + TI_TASK], %g4 LOAD_PER_CPU_BASE(%g5, %g6, %g1, %g2, %g3) |
