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authorPaul Mackerras <paulus@samba.org>2008-05-09 20:12:06 +1000
committerPaul Mackerras <paulus@samba.org>2008-05-09 20:12:06 +1000
commit2a5f2e3e6cd1ce9fb3f8b186b6bc9aa1f1497a92 (patch)
treeb2306840f227972a7c9d4a2b75e516fe81358ce8 /arch/sparc64/mm/ultra.S
parent02539d71fa98d5737bb668b02286c76241e4bac9 (diff)
parent78be76476a34a77f0ea9db2f78ba46a2b0fd5ab5 (diff)
Merge branch 'for-2.6.26' of master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
Diffstat (limited to 'arch/sparc64/mm/ultra.S')
-rw-r--r--arch/sparc64/mm/ultra.S27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/sparc64/mm/ultra.S b/arch/sparc64/mm/ultra.S
index e686a67561a..796e005dad8 100644
--- a/arch/sparc64/mm/ultra.S
+++ b/arch/sparc64/mm/ultra.S
@@ -676,6 +676,33 @@ xcall_new_mmu_context_version:
wr %g0, (1 << PIL_SMP_CTX_NEW_VERSION), %set_softint
retry
+#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, 15, %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
+#endif
+
#endif /* CONFIG_SMP */