diff options
| author | David S. Miller <davem@davemloft.net> | 2009-03-18 23:51:57 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2009-03-18 23:51:57 -0700 |
| commit | 42cc77c861e8e850e86252bb5b1e12e006261973 (patch) | |
| tree | 422d0619783e95d95d682775305d0dfdac72a366 /arch/sparc/mm | |
| parent | 1c339eb183bb48095feaa46057ac4f4f0603dbf9 (diff) | |
| download | op-kernel-dev-42cc77c861e8e850e86252bb5b1e12e006261973.zip op-kernel-dev-42cc77c861e8e850e86252bb5b1e12e006261973.tar.gz | |
sparc64: Reschedule KGDB capture to a software interrupt.
Otherwise it might interrupt switch_to() midstream and use
half-cooked register window state.
Reported-by: Chris Torek <chris.torek@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc/mm')
| -rw-r--r-- | arch/sparc/mm/ultra.S | 24 |
1 files changed, 2 insertions, 22 deletions
diff --git a/arch/sparc/mm/ultra.S b/arch/sparc/mm/ultra.S index 80c788e..b57a594 100644 --- a/arch/sparc/mm/ultra.S +++ b/arch/sparc/mm/ultra.S @@ -679,28 +679,8 @@ xcall_new_mmu_context_version: #ifdef CONFIG_KGDB .globl xcall_kgdb_capture xcall_kgdb_capture: -661: rdpr %pstate, %g2 - wrpr %g2, PSTATE_IG | PSTATE_AG, %pstate - .section .sun4v_2insn_patch, "ax" - .word 661b - nop - nop - .previous - - rdpr %pil, %g2 - wrpr %g0, PIL_NORMAL_MAX, %pil - sethi %hi(109f), %g7 - ba,pt %xcc, etrap_irq -109: or %g7, %lo(109b), %g7 -#ifdef CONFIG_TRACE_IRQFLAGS - call trace_hardirqs_off - nop -#endif - call smp_kgdb_capture_client - add %sp, PTREGS_OFF, %o0 - /* Has to be a non-v9 branch due to the large distance. */ - ba rtrap_xcall - ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1 + wr %g0, (1 << PIL_KGDB_CAPTURE), %set_softint + retry #endif #endif /* CONFIG_SMP */ |
