diff options
Diffstat (limited to 'arch/sparc64/kernel/rtrap.S')
-rw-r--r-- | arch/sparc64/kernel/rtrap.S | 20 |
1 files changed, 16 insertions, 4 deletions
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S index 97a993c1f7f3..fd3cee4d117c 100644 --- a/arch/sparc64/kernel/rtrap.S +++ b/arch/sparc64/kernel/rtrap.S @@ -14,9 +14,9 @@ #include <asm/visasm.h> #include <asm/processor.h> -#define RTRAP_PSTATE (PSTATE_RMO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE) -#define RTRAP_PSTATE_IRQOFF (PSTATE_RMO|PSTATE_PEF|PSTATE_PRIV) -#define RTRAP_PSTATE_AG_IRQOFF (PSTATE_RMO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG) +#define RTRAP_PSTATE (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_IE) +#define RTRAP_PSTATE_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV) +#define RTRAP_PSTATE_AG_IRQOFF (PSTATE_TSO|PSTATE_PEF|PSTATE_PRIV|PSTATE_AG) .text .align 32 @@ -132,6 +132,18 @@ __handle_signal: ba,pt %xcc, __handle_signal_continue andn %l1, %l4, %l1 + /* When returning from a NMI (%pil==15) interrupt we want to + * avoid running softirqs, doing IRQ tracing, preempting, etc. + */ + .globl rtrap_nmi +rtrap_nmi: ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1 + sethi %hi(0xf << 20), %l4 + and %l1, %l4, %l4 + andn %l1, %l4, %l1 + srl %l4, 20, %l4 + ba,pt %xcc, rtrap_no_irq_enable + wrpr %l4, %pil + .align 64 .globl rtrap_irq, rtrap, irqsz_patchme, rtrap_xcall rtrap_irq: @@ -161,8 +173,8 @@ rtrap_xcall: call trace_hardirqs_on nop wrpr %l4, %pil -rtrap_no_irq_enable: #endif +rtrap_no_irq_enable: andcc %l1, TSTATE_PRIV, %l3 bne,pn %icc, to_kernel nop |