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| author |   David S. Miller <davem@sunset.davemloft.net> | 2006-07-13 16:05:26 -0700 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-07-14 17:00:21 -0700 |
| commit | d8573e20d5d6974305599dde42b5dd7583310ccf (patch) | |
| tree | e4469e74b112413c5d781038424a303068113c48 /arch/sparc64/kernel/head.S | |
| parent | Fix nasty /proc vulnerability (diff) | |
| download | linux-dev-d8573e20d5d6974305599dde42b5dd7583310ccf.tar.xz linux-dev-d8573e20d5d6974305599dde42b5dd7583310ccf.zip | |
[SPARC64]: Make sure IRQs are disabled properly during early boot.
Else we trigger the new irqs_disable() assertion in start_kernel().
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/head.S')
| -rw-r--r-- | arch/sparc64/kernel/head.S | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/arch/sparc64/kernel/head.S b/arch/sparc64/kernel/head.S index 75684b56767e..c8e9dc9d68a9 100644 --- a/arch/sparc64/kernel/head.S +++ b/arch/sparc64/kernel/head.S @@ -551,9 +551,10 @@ setup_trap_table: save %sp, -192, %sp /* Force interrupts to be disabled. */ - rdpr %pstate, %o1 - andn %o1, PSTATE_IE, %o1 + rdpr %pstate, %l0 + andn %l0, PSTATE_IE, %o1 wrpr %o1, 0x0, %pstate + rdpr %pil, %l1 wrpr %g0, 15, %pil /* Make the firmware call to jump over to the Linux trap table. */ @@ -622,11 +623,9 @@ setup_trap_table: call init_irqwork_curcpu nop - /* Now we can turn interrupts back on. */ - rdpr %pstate, %o1 - or %o1, PSTATE_IE, %o1 - wrpr %o1, 0, %pstate - wrpr %g0, 0x0, %pil + /* Now we can restore interrupt state. */ + wrpr %l0, 0, %pstate + wrpr %l1, 0x0, %pil ret restore |