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authorRussell King <rmk@dyn-67.arm.linux.org.uk>2005-05-21 18:16:44 +0100
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-05-21 18:16:44 +0100
commit791be9b976ba621b21745c30a7fca225fada9110 (patch)
tree9e3c8d3a0bbb0b614de7daac35f7452f077464fd
parent706fdd9faaad5bd52c774190a54c0fd1dfc0f418 (diff)
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[PATCH] ARM SMP: add IPI support
Add support for inter-processor interrupts to the main IRQ handling code. Signed-off-by: Russell King <rmk@arm.linux.org.uk>
-rw-r--r--arch/arm/kernel/entry-armv.S14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index 8ff82bc..a99e686 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -34,6 +34,20 @@
@
adrne lr, 1b
bne asm_do_IRQ
+
+#ifdef CONFIG_SMP
+ /*
+ * XXX
+ *
+ * this macro assumes that irqstat (r6) and base (r5) are
+ * preserved from get_irqnr_and_base above
+ */
+ test_for_ipi r0, r6, r5, lr
+ movne r0, sp
+ adrne lr, 1b
+ bne do_IPI
+#endif
+
.endm
/*
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